To see the other types of publications on this topic, follow the link: Provenances.
Dissertations / Theses on the topic 'Provenances'
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the top 50 dissertations / theses for your research on the topic 'Provenances.'
Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.
You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.
Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.
1
Ruiz, Guillamón Araceli. "Drought response assessment of 3 cork oak provenances." Master's thesis, ISA/UL, 2014. http://hdl.handle.net/10400.5/7398.
Full text
2
Sagaram, Madhulika. "Variation in ecogeographical traits of pecan cultivars and provenances." Thesis, [College Station, Tex. : Texas A&M University, 2007. http://hdl.handle.net/1969.1/ETD-TAMU-1579.
Full text
3
Beaumont, David. "St. Peter's Cathedral, Adelaide : processes provenances and architectural schemes /." Title page, contents and introduction only, 1997. http://web4.library.adelaide.edu.au/theses/09ARCHSB/09archsbb379.pdf.
Full text
4
Belonger, Paul J. "VARIATION IN SELECTED JUVENILE WOOD PROPERTIESIN FOUR SOUTHERN PROVENANCES OF LOBLOLLY PINE." NCSU, 1998. http://www.lib.ncsu.edu/theses/available/etd-19981027-102102.
Full textAbstract:
BELONGER, PAUL JAMES. Variation of selected juvenile wood properties in four southern provenances of loblolly pine. (Under the direction of Steven E. McKeand.)Gravimetric wood density, x-ray densitometry, and latewood tracheids were used to investigate the relative importance of genetic and environmental effects on various assessments of wood density, tracheid characteristics, and growth traits in loblolly pine (Pinus taeda L.). Breast-height wood samples were taken from four 12-year-old plantings of a genetics trial that included approximately 50 open-pollinated families of loblolly pine from diverse sources. The densitometry and tracheid analysis included wood samples from only two of the test sites and assessed variation in 51 families, and 38 families, respectively. Moderate provenance differences, but strong family and environmental differences were found for wood density and volume, and the pooled genetic correlation between volume and density was -0.30. The Atlantic Coastal and Lower Gulf sources had higher average wood density than the Marion County and Gulf Hammock sources, and the Lower Gulf source had the lowest stem volume. Provenance variation in wood density was not consistent with geographic trends indicating a need for field testing in the area of intended deployment. Location effects were very important and sites which promoted high volume production also appeared to cause low wood density. Strategies are available to combat the unfavorable negative environmental correlation (-0.91, P < 0.01) between stem volume and wood density. Provenance variation was important for disk densities of early ring segments, but diminished with age and was not significant (P > 0.10) beyond the segment consisting of rings 3-6. Pooled narrow-sense heritability estimates for the consecutive-ring group disk densities ranged from 0.142 to 0.225, and all groups were highly correlated with average (tree) disk density (rA > 0.90). Mean latewood density and mean latewood percent both showed a strong positive genetic correlation with average disk density and the disk density of the ring 3-5 segment. Early selection for disk density can be effective.The transition to "mature" wood occurred at ring number 5.9 at the flatwoods location with higher wood density and ring number 8.9 at the upland test site with lower density. The point of transition also showed a strong provenance component (P < 0.05); the higher density Atlantic Coastal and Lower Gulf Coastal Plain sources transitioned sooner than the lower density Gulf Hammock and Marion County sources. Trachied length, total diameter, lumen diameter, and cell wall thickness were measured using outer-ring latewood tracheids. Of the trachied traits, only cell wall thickness showed a marginal location effect (P < 0.10). Measured in the middle-third of the cells, tracheids sampled at the Florida location were about 11% larger in total diameter, lumen diameter, and cell wall thickness, but no difference was detected for tracheid length. Provenance differences were strongest for cell wall thickness (P < 0.01) and marginally important for tracheid length (P < 0.16) and total cell diameter (P < 0.18).Variation among families within provenances was large (P < 0.01 for all tracheid traits) and resulted in relatively high narrow-sense heritability estimates of 0.58 for length, 0.34 for total diameter, 0.22 for lumen diameter, and 0.37 for cell wall thickness. The genetic correlations among these traits were all greater than 0.69 except the correlation between length and lumen diameter which was 0.42. Measurement of tracheid length can be used to assess family differences for cell diameter and cell wall thickness.None of the tracheid traits were strongly correlated with average disk density or the disk density of rings 3-5. Therefore, genetic selection for high average density in 10 to 12 year-old loblolly pines from the provenances studied here will not produce a predictable pattern in the character of outer-ring latewood tracheids.
5
Masamba, Christopher Riach Liamba. "Factors influencing accelerated seedling growth in Malawian provenances of Faiherbia Albida del." Thesis, Imperial College London, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.392122.
Full text
6
Denny, Geoffrey Carlile. "Evaluation of selected provenances of taxodium distichum for drought, alkalinity and salinity tolerance." [College Station, Tex. : Texas A&M University, 2007. http://hdl.handle.net/1969.1/ETD-TAMU-1327.
Full text
7
Parasharami, V. "Assessment of diversity and in vitro responses in pinus roxburghii from Indian provenances." Thesis(Ph.D.), CSIR-National Chemical Laboratory, Pune, 2011. http://dspace.ncl.res.in:8080/xmlui/handle/20.500.12252/3767.
Full text
8
Malmqvist, Cecilia. "Planting and survivability of Douglas fir (Pseudotsuga menziesii (Mirb.) Franco) in Sweden : Questions of seedling storability, site preparation, bud burst timing and freezing tolerance." Doctoral thesis, Linnéuniversitetet, Institutionen för skog och träteknik (SOT), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-59933.
Full textAbstract:
The non-native Douglas fir (Pseudotsuga menziesii (Mirb.) Franco) has been grown to a limited extent in the southern part of Sweden since the early 1900s. A more extensive use has probably been curtailed by its known susceptibility to damage by frost, pine weevil and other pests. Limited access to vital seedlings of suitable provenances has also restricted its more widespread growth. The need for valuable species that will grow well through ongoing climate change has increased the interest for Douglas fir in Sweden. This thesis addresses a number of important questions relating to the planting of Douglas fir in Sweden: seedling storability, freezing tolerance, timing of bud burst, frost damage and seedling response to site preparation. Seven Douglas fir provenances originating from British Columbia, Canada were used in the experiments and where applicable, compared with a local provenance of Norway spruce (Picea abies (L.) Karst.). The early bud burst of interior Douglas fir provenances, observed both in greenhouse tests and in the field, results in a high risk of damage by late spring frost. This type of damage does not seem, however, to be fatal and does not obviously retard the early growth of seedlings. The difference in growth between coastal and interior provenances was insignificant, but survival was greater for interior than for coastal provenances. All the provenances of Douglas fir studied showed a later development of freezing tolerance of shoots and roots in the autumn than Norway spruce, with the coastal provenances developing such tolerance even later than interior provenances. This could be a contributory cause for the severe damage by winter desiccation observed on seedlings of coastal origin. A thorough site preparation proved to be an effective way to increase survival and root growth. Interior provenances of Douglas fir became ready for storage earlier in autumn than coastal provenances. When freezing tolerance of shoots had increased sufficiently, Douglas fir seedlings could safely be kept in frozen storage using the same procedures used for Norway spruce. The results emphasise the need to gain further knowledge about how the remaining obstacles to establishment of Douglas fir could be reduced with different silviculture methods.
9
Costa, Ricardo Alexandre Rodrigues. "Chemical composition of cork, phloem and xylem of Quercus suber L. from different provenances." Master's thesis, ISA/UL, 2019. http://hdl.handle.net/10400.5/18375.
Full textAbstract:
Mestrado em Engenharia Florestal e dos recursos Naturais - Instituto Superior de Agronomia / ULA composição química de cortiça, floema e xilema foi determinada em árvores jovens de Quercus suber L. de três proveniências (Alcácer do Sal, Azeitão e Santiago do Cacém) de uma importante região de produção suberícola em Portugal, tendo em vista a análise de eventuais diferenças entre proveniências. Foram estudadas três árvores por proveniência, determinando-se o conteúdo em cinzas, extractivos (solubilizados em diclorometano, etanol e água), suberina (no caso da cortiça), lenhina e polissacáridos. Os três tecidos mostraram grandes diferenças na sua composição química. A composição química média da cortiça foi a seguinte: 0,66 % em cinzas, 11,7 % extractivos, 42,3 % suberina, 24,1 % lenhina e 16,2 % polissacáridos; do floema 2,9 % cinzas, 4,5 % extractivos, 38,0% lenhina e 49,1 % polissacáridos; e do xilema 1,1 % cinzas, 5,6 % extractivos, 23,4 % lenhina e 64,6 % polissacáridos. A análise estatística mostrou que a proveniência apenas foi um factor de variação significativo para os extractivos em etanol no caso da cortiça e os polissacáridos no floema. A composição monomérica da lenhina de todas as amostras foi analisada por pirólise analítica a 650 ºC. A lenhina dos três tecidos difere substancialmente: o rácio S/G foi 0,12 na cortiça, 1,1 no floema e 2,3 no xilema. Os compostos obtidos por pirólise foram também identificados e, sempre que foi possível determinar a sua origem, agrupados em açúcares, lenhina e suberina (apenas nas amostras de cortiça). Os açúcares representaram 58,6 %, 63,1 % e 25,4 %, a lenhina 14,4 %, 10,4 % e 12,6 % respectivamente no floema, xilema e cortiça, e a suberina na cortiça representou 33,0 % do total dos picos dos pirogramas
N/A
10
Sarr, Mame Sokhna. "Morphological and Physiological Responses of Senegalia senegal (L.) Britton Provenances to Drought, Salinity, and Fertility." Diss., Virginia Tech, 2017. http://hdl.handle.net/10919/85833.
Full textAbstract:
Increasing drought and salinity tolerances in economically important trees adapted to dry land areas is key challenge for maintaining the socioeconomic welfare of dry land areas. Strategies to improve drought and salt tolerance must examine the tree physiological mechanisms that link to the trees survival and growth. This study examined physiological adaptive traits allowing Senegalia senegal to grow better in both saline and dry lands. We conducted two greenhouse experiments and one field study to characterize growth, photosynthetic capacity, water use efficiency (WUE) and gum arabic yield potential among different Senegalia senegal provenances. In the first experiment, we tested early growth and photosynthetic response of seed sources to a cyclic drought treatment. The second greenhouse study examined seed source response to drought, salinity and fertility conditions. Gum yield assessment, growth and WUE of mature trees were determined from a field trial.
In general, results showed a high intra genetic variability of Senegalia senegal on gum yield, biomass accumulation and growth. Ngane provenance presented superior growth characteristics as both mature trees and seedlings and exhibited a more conservative water use strategy under drought. Both greenhouse studies revealed similar photosynthetic capacity among Senegalia senegal genotypes when conditions are not limiting. However, when factors such as salinity, fertility and severe drought are involved, different physiological and morphological responses appear and at times this was dependent on seed source. But, at moderate drought stress (chapter 2), no drought by provenance interaction was found. Results of chapter 3 revealed that Ngane has larger stomata with low density in comparison with Diamenar and Kidira provenances. With the exception of Ng21B1, all seed sources displayed similar adaptations to salt stress in term of biomass accumulation. Fertilizer increased total biomass of all seed sources from 63% to 213% for Ng21B1 and K17B19, respectively. However, salinity reduced the fertilizer effect on biomass increment. Leaf gas exchanges were affected by salinity and fertilizer within various responses among seed sources. Results of chapter 4 revealed that gum yield was found to be positively correlated with tree height, crown width, stem volume index and crown area index. Ngane and Diamenar appeared the best provenances in term of annual gum yield per hectare. Diamenar had a higher survival rate than Ngane. This finding reveals the need to consider the tradeoff between tree survival rate and individual tree gum yield in Senegalia senegal stands. In addition to being more sensitive to salinity, Ngane also seems to be more susceptible to low soil pH in terms of survival, but this result needs to be tested further.
This study suggests that improvement of gum arabic production can be possible through genetic selection. But, for the best adapted genotypes, research should explore new genetic combination and investigate physiology and genetic diversity. Moreover, the findings on the relationship between soil pH and tree survival rate suggests a need for care in selecting appropriate sites for Senegalia senegal stands. Therefore, silviculture practices as well as genetic selection appear critical in improving gum arabic production.Ph. D.
11
Park, Andrew David. "Preconditioning responses of salt-tolerant and salt-sensitive provenances of Acacia tortilis (Forsk.) Hayne to high salinity." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1996. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/MQ51549.pdf.
Full text
12
Soeprijo, Kertadikara Arti Widowati. "Variabilité génétique de quelques provenances de teck (tectona grandis l. F. ) et leur aptitude a la multiplication végétative." Nancy 1, 1992. http://www.theses.fr/1992NAN10368.
Full textAbstract:
Le teck (tectona grandis l. F. ) est un arbre dominant des forets tropicales semi-décidues de l'Asie du sud-est. La qualité de son bois justifie depuis longtemps sa plantation hors de son aire naturelle. Des mesures biométriques réalisées sur de jeunes plants élevés en serre et appartenant à 9 provenances (sept de l'Asie du sud-est et deux introduites en Afrique) montrent une meilleure croissance de la provenance de cote d'ivoire et une nette différenciation de deux provenances indiennes et d'une indonésienne par rapport aux autres. L'analyse sur 14 systèmes enzymatiques (18 locus polymorphes) des mêmes provenances met en évidence une variabilité entre provenances (fst=0,12): les populations indiennes forment un groupe homogène qui se distingue nettement de toutes les autres provenances étudiées (africaines, indonésiennes et thaïlandaises). Les populations montrent toutes un déficit en hétérozygotie (fis=0,18) malgré une forte allogamie (taux d'allofécondation multilocus de 10 descendances d'une provenance indienne: tm=0,98). Seul, la présence de certains allèles du locus gotb a présente des corrélations significatives avec plusieurs caractères biométriques. L'aptitude du teck à la multiplication vegetative (bouturage herbacé, micropropagation in vitro, culture d'apex et induction de bourgeonnement adventif à partir des cals) varie selon les provenances et les individus. La micropropagation a permis la multiplication et l'acclimatation en serre de 83 clones des 147 ortets utilisés. Les taux de multiplication, variables selon les clones, n'ont pas produit de changements dans la structure génétique de la population polyclonale obtenue par rapport à celle de l'ensemble des ortets utilisés. La croissance des clones a révélé une hétérogénéité des clones qui peut être due en partie au mode de multiplication. Des analyses biochimiques réalisées chez trois clones ont montre des écarts entre les valeurs observées chez les ortets et les ramets. Les profils enzymatiques des ramets ont présenté ainsi de nombreuses différences (18%) par rapport à ceux des ortets correspondants, ces différences s'atténuent avec le temps
13
Caré, Oliver [Verfasser]. "Norway spruce in German low mountain ranges – morphological distinctiveness and genetic adaptation of high elevation provenances / Oliver Caré." Göttingen : Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2021. http://d-nb.info/1234236222/34.
Full text
14
Marques, Filipe Alexandre de Andrade. "Contribuição para o conhecimento da capacidade e vigor germinativos de sementes de Acacia dealbata Link. e Acacia longifolia (Andr.) Wild." Master's thesis, ISA, 2014. http://hdl.handle.net/10400.5/6794.
Full textAbstract:
Mestrado em Engenharia Florestal e dos Recursos Naturais - Instituto Superior de AgronomiaThe aim of this study was to improve the knowledge on seed-coat dormancy and germination skills of Acacia, seeking to clarify key aspects relating to the efficiency of its expansion through seed propagation. The species, Acacia longifolia (provenance: Sintra) and A. dealbata (provenances: Fundão and Cabrum river valley), are considered two of the most invasive of its genus in Portugal. For both species two seed propagation tests were performed: one for pre-germination treatment and another for germination in nursery environment. In these trials, we determined the weight of seeds, the germination rate and the vigor index; hot water (90° C followed by 24 hour immersion) was used to break the seed-coat dormancy. In the experiment performed in the nursery the two species were also compared for the rate of mortality, and for vitality through the determination of chlorophyll fluorescence. The results indicated that Acacia longifolia has a higher fitness than A. dealbata to seed propagation. This capability was confirmed by a potential germination in chamber significantly higher than that of A. dealbata, by a higher germination rate in nursery and higher vitality of seedlings produced, measured by a post-germinative mortality rate significantly lower.
15
Assad, Amanda Aparecida Vianna. "Effect of seed provenances on anual increment, physicomechanical properties and anatomical features of 30 – year - old Balfourodendron riedelianum wood." Universidade Federal de São Carlos, 2017. https://repositorio.ufscar.br/handle/ufscar/9162.
Full textAbstract:
Submitted by Milena Rubi ( ri.bso@ufscar.br) on 2017-10-18T13:42:03Z
No. of bitstreams: 1
ASSAD_Amanda_2017.pdf: 1129880 bytes, checksum: 2d9489f1716ddf9cfc07f666bbf7a447 (MD5)Approved for entry into archive by Milena Rubi ( ri.bso@ufscar.br) on 2017-10-18T13:42:18Z (GMT) No. of bitstreams: 1 ASSAD_Amanda_2017.pdf: 1129880 bytes, checksum: 2d9489f1716ddf9cfc07f666bbf7a447 (MD5)
Approved for entry into archive by Milena Rubi ( ri.bso@ufscar.br) on 2017-10-18T13:42:27Z (GMT) No. of bitstreams: 1 ASSAD_Amanda_2017.pdf: 1129880 bytes, checksum: 2d9489f1716ddf9cfc07f666bbf7a447 (MD5)
Made available in DSpace on 2017-10-18T13:42:39Z (GMT). No. of bitstreams: 1 ASSAD_Amanda_2017.pdf: 1129880 bytes, checksum: 2d9489f1716ddf9cfc07f666bbf7a447 (MD5) Previous issue date: 2017-06-30
Não recebi financiamento
From increase of technology in forest products area, studies of native species are essential for development of industry and reforestation. As most of wood used for various applications comes from native forests, especially Amazon forest, exploitation without due legal measures puts at risk the wood conservation this Brazilian biome.In this context, studies are needed to characterize and study wood native quality indicating its most appropriate use. As an example we mention Balfourodendron riedelianum and the study of its anatomical, physical and mechanical properties with information about its age, seed provenance and planting data.The present study had as goals: a) determine the effect of seed provenances on tree volume, volume per hectare and mean annual increment of Balfourodendron riedelianum. b) determine variations in properties and anatomy in function of seed provenances and radial variation. c) characterize physical-mechanical properties to know wood strength and strength class. B. riedelianum seed lings were grown from the seeds planted in 1984 in the state of São Paulo, cities of Gália and Bauru, and in the state of Paraná, city of Alvorada do Sul. We felled 36 randomly selected trees, 12 from each seed provenance. A butt logwith1.3 m long was removed from the base of each tree, and a central plank was cut to obtain specimens for physical and mechanical properties and anatomical features. Three radial positions were established: the nearest part of trunk center, designated as pith, a middle position, and a position close to the bark, designated as bark.From standardized methodologies, the effect of seed provenance on tree volume, volume per hectare and average annual increment of Balfourodendron riedelianum were determined. Followed by determination of anatomical properties variations founded due seed provenances and radial variation. We also performed characterization of physical-mechanical properties by determination of wood strength and Strength class. We conclude that there were variations in wood volume and properties corroborating that trees were influenced by seed provenance. Alvorada do Sul wood presented higher strength and homogeneity compared to the other two provenances, whereas Gália and Bauru had the highest average annual increment.
Com o crescimento da tecnologia na área de produtos florestais o estudo de espécies nativas é essencial para o desenvolvimento da indústria e o reflorestamento.Como grande parte da madeira empregada para as mais diversas aplicações é proveniente de florestas nativas, especialmente a floresta amazônica,a exploração sem as devidas medidas legais coloca em risco a conservação da madeira deste bioma brasileiro. Neste contexto são necessários estudos que caracterizem e avaliem a qualidade de madeiras nativas indicando seu uso mais adequado. Como exemplo cita – se oBalfourodendron riedelianum e o estudo de suas propriedades anatômicas, físicas e mecânicas com informações quanto à sua idade, origem das sementes e dados do plantio. O presente estudo teve como objetivos: a) determinar e avaliar o crescimento em volume e incremento anual de Balfourodendron riedelianum oriundo de três procedências de sementes aos 30 anos de idade; b) caracterizar a madeira de Balfourodendron riedelianum quanto às suas propriedades física, mecânicas e anatômicas para determinação de sua qualidade; c) verificar se existem alterações nas propriedades em função das diferentes procedências das sementes e variação radial. As mudas das árvores de Balfourodendron riedelianum foram plantadas a partir de sementes de polinização aberta no ano de 1984, coletadas de três populações naturais de diferentes regiões: Alvorada do Sul-PR, Gália-SP e Bauru-SP e plantadas na Estação Experimental de Luiz Antônio (EELA). Foram coletadas 36 árvores, 12 árvores de cada procedência, um tronco basal de 1,30m foi retirado de cada árvore e em seguida retirado amostras de três posições radiais, sendo próximo à medula, região intermediária e próximo à casca. A partir de metodologias comumente empregadas foram determinados o efeito da procedência das sementes em volume da árvore, volume por hectare e incremento médio anual de Balfourodendron riedelianum. Seguido pela determinação das variações na estrutura da madeira decorrentes das procedências das sementes e da variação radial. Também foi realizada a caracterização das propriedades físico-mecânicas determinando a resistência da madeira e a classe de resistência. Concluiu - se que ocorreram variações no volume e nas propriedadesfisicomecânicas da madeira confirmando que as árvores foram influenciadas pela procedência. A madeira proveniente de Alvorada do Sul apresentou maior resistência e homogeneidade comparada as outras duas procedências, porém Gália e Bauru apresentaram maior incremento médio anual.
16
Jibo, Abdullahi Umar. "Variation in drought tolerance and morphological plasticity among two provenances of Acacia senegal (Senegalia senegal) seedling in North Eastern Nigeria." Thesis, University of Aberdeen, 2015. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=227119.
Full text
17
Baribeau, Hélène. "Apports alimentaires, provenances et relations entre nitrites, nitrates, diméthylnitrosamines et vitamines A, C et E chez des populations rurales du Québec." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/mq25484.pdf.
Full text
18
Rodot, Marie-Angélique. "Les matériaux céramiques au Néolithique final, dans le Centre et le Centre-Ouest de la France : natures, provenances et habitudes techniques." Dijon, 2007. http://www.theses.fr/2007DIJOL018.
Full textAbstract:
Ce travail porte sur la production céramique de quatre sites du Néolithique final (2900 - 2500 av. J. -C. ), situés dans les régions Centre et Poitou-Charente (France) : Diconche (Saintes, 17), le Camp Allaric (Aslonnes, 86), les Vaux (Moulins-sur-Céphons, 36) et La Bouchardière - Le Pain Perdu (Monts, 37). Les trois premiers sont attribués à l’Artenac alors que le quatrième est de culture archéologique encore non définie. Pour chaque site, l’analyse quantitative des types céramiques a permis de caractériser le répertoire et de prélever un échantillon « représentatif » pour l’étudier en lame mince. L’analyse pétrographique a permis d’identifier des groupes de sédiments et d’inclusions ajoutées mais également de déterminer la provenance potentielle des matériaux. La plupart des sédiments semblent être locaux et de nature majoritairement silicatée. Cependant, les sites Artenac possèdent des poteries à sédiment exogène issu de massifs cristallins, témoignant de probables circulations. Sur les 4 sites, les pratiques de préparation de la pâte permettent de distinguer 2 aires géographiques : à Diconche, l’ajout de chamotte est la pratique majoritaire, alors que sur les 3 autres gisements, les pâtes sont surtout sans inclusions ajoutées. Le répertoire céramique, le paramètre le plus variable, permet de distinguer 3 aires géographiques : seuls ceux de Diconche et du Camp Allaric sont similaires. La répartition spatiale des paramètres apparaît plus en relation avec la position géographique des sites qu’avec les cultures archéologiques. Ce constat va dans le sens de données ethnoarchéologiques, bien que les facteurs à l’origine de ces répartitions soient difficilement interprétablesCeramic productions of four Neolithic settlements (2900 - 2500 av. J. C. ) located in Centre and Poitou-Charente regions (France) are analysed so as to identify raw materials and provenances according to their typology: Diconche (Saintes, Charente-Maritime), le Camp Allaric (Aslonnes, Vienne), les Vaux (Moulins-sur-Céphons, Indre) et La Bouchardière - Le Pain Perdu (Monts, Indre-et-Loire). The first three settlements are attributed to Artenac while the fourth is from an indefinite archaeological culture. Petrography analyses are used to identify sediment and temper groups in order to assess variability of raw material choices and paste preparation behaviours. The majority of sediments identified are potentially local, but non-local sediments, from crystalline massif, are present in the three Artenac productions. These results suggest relationships among communities living near these outcrops. The practices and typological assemblages variability permit to observe spatial distributions. Silicate sediments dominated in all samples, whereas temper nature allows to identify two spatial communities of practice areas. The production of Diconche is characterised by grog, whereas in other settlements ceramics are made without temper. Typological assemblage is the parameter that exhibits greatest variability: three settlement groups are distinguished. Only Diconche and Camp Allaric productions could be collected on the basis of ceramic typology. Although four settlements differences appear sometimes in connection with archaeological culture, other factors in relation with spatial distribution can be advanced. However they remain difficult to interpret
19
Esen, Derya. "Growth responses of nine provenances of Pinus brutia Ten. (Turkish red pine) to different levels of herbaceous competition and soil water." Thesis, This resource online, 1996. http://scholar.lib.vt.edu/theses/available/etd-11182008-063422/.
Full text
20
Jansen, Kirstin. "Stable Isotopes and Metabolite Profiles as Physiological Markers for the Drought Stress Sensitivity in Douglas-Fir Provenances (Pseudotsuga menziesii (MIRB.) FRANCO)." Doctoral thesis, Humboldt-Universität zu Berlin, 2018. http://dx.doi.org/10.18452/19617.
Full textAbstract:
In Mitteleuropa werden zukünftig häufigere Trocken- und Hitzeperioden mit wirtschaftlichen Einbußen in der Waldwirtschaft erwartet. Die Douglasie (Pseudotsuga menziesii (Mirb.) Franco) wird als Alternative für die wirtschaftlich bedeutsame, jedoch trockenheitsempfindliche Fichte diskutiert (Picea abies (L.) H.Karst.). Zwei Unterarten, die Küsten- (FDC) und die Inlandsdouglasie (FDI), sind im ausgedehnten natürlichen Verbreitungsgebiet in Nordamerika beheimatet, welches ein großes Potenzial für die Auswahl produktiver und trockenresistenter Herkünfte bietet. Unser Ziel war, die Trockenreaktion verschiedener Douglasienherkünfte unter Verknüpfung morphologischer und physiologischer Parameter und die der Trockenheitsresistenz bzw. -empfindlichkeit zugrundeliegenden Mechanismen zu erforschen. Ein Herkunftsversuch in Südwestdeutschland ermöglichte die Untersuchung 50-jähriger Douglasien verschiedener Herkünfte entlang eines Höhengradienten. Unter kontrollierten Bedingungen simulierten wir die Effekte einer Hitzewelle auf Jungbäume zweier Provenienzen. Wir analysierten die Kohlenstoff- und Sauerstoff-Stabilisotopenzusammensetzung, den Gaswechsel der Blätter, Veränderungen im Stoffwechsel und das Baumwachstum.
Unsere Ergebnisse zeigen bei FDC aus humiden Regionen hohe Wachstumseinbußen unter Trockenheit und moderat bis stark verringerte stomatäre Leitfähigkeit, unterstützt durch Photoprotektion. FDC aus Regionen mit starker Sommertrockenheit reagierten kaum mit Stomataschluss und Wachstumseinbußen auf Trockenheit, jedoch mit starker Osmoregulation und Monoterpen-Emissionen, welche zur Trockenresistenz beitragen könnten. FDI aus einer ariden Region zeigten hohe An, geringes Wachstum und stark antioxidative und photoprotektive Mechanismen.
Die Herkünfte unterscheiden sich stark in ihrer Trockenreaktion und ihren Schutzmechanismen. Der Anbau trockenresistenter Herkünfte wird an Standorten von Vorteil sein, für die eine Häufung von ariden Sommerperioden vorhergesagt wird.In Central Europe, more frequent periods of dry and hot weather are expected in the future with economic losses in the forestry sector. Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) is discussed as a timber species alternative to the economically important but drought-sensitive spruce (Picea abies (L.) H. Karst.). Two subspecies, the coastal (FDC) and the interior Douglas-fir (FDI), are native to an extensive natural range in North America, offering a great potential for the selection of productive and drought tolerant provenances. Our goal was to investigate the drought response of different Douglas-fir provenances on the morphological and physiological level, as well as the mechanisms underlying drought resistance or susceptibility. A provenance trial in southwestern Germany established in 1958 allowed the study of 50-year-old Douglas-fir trees of diverse provenances along a height gradient. Under controlled conditions, we simulated the effects of a heat wave on young trees of two provenances. We analyzed carbon and oxygen stable isotopic composition, leaf gas exchange, changes in metabolism and tree growth. FDC from humid regions responded to drought with strong growth decline and a medium to strong stomatal closure, supported by enhanced instantaneous photoprotection. FDC from regions with very dry summer conditions showed a small growth decline and anisohydric regulation of stomatal conductance under drought, supported by high levels of osmotic adjustment. High monoterpene emissions might contribute to the drought resistance. FDI from an arid region showed high assimilation rates, low growth potential and a high antioxidant, photoprotective, drought and heat protective potential. The provenances differ greatly in their dry reaction and their protective mechanisms. The cultivation of drought resistant crops will be beneficial at sites predicted to accumulate arid summer periods.
21
Thiel, Daniel Verfasser], and Carl [Akademischer Betreuer] [Beierkuhnlein. "Plasticity, Intraspecific Variability and Local Adaptation to Climatic Extreme Events of Ecotypes/Provenances of Key Plant Species / Daniel Thiel. Betreuer: Carl Beierkuhnlein." Bayreuth : Universität Bayreuth, 2014. http://d-nb.info/105935232X/34.
Full text
22
Kachaka, Etienne Yusufu. "Carbone stocké dans un essai de provenances d'Acacia mangium à Ibi Village sur le plateau des Batéké en République Démocratique du Congo." Master's thesis, Université Laval, 2014. http://hdl.handle.net/20.500.11794/25217.
Full textAbstract:
Cette étude concerne l’évaluation d’un essai de 46 provenances d’Acacia mangium établi depuis 2006 à Ibi sur le plateau des Batéké en République Démocratique du Congo. Son objectif est d’évaluer, au bout de 7 ans, les provenances pour la croissance en hauteur et en diamètre et pour la biomasse et les stocks de carbone ainsi que les teneurs en carbone et azote dans les sols sous les provenances d’Acacia mangium comparativement à des sols de savane sans Acacia. Les résultats obtenus par cette étude ont permis de ressortir les différences entre provenances pour chacun des paramètres évalués. Les provenances de Papouasie-Nouvelle-Guinée ainsi que celles de Queensland (Australie) suivies des provenances de Malaisie, de Vietnam, de Chine, de Fidji et de Philippines se sont révélées être les meilleures pour les paramètres évalués au cours de cette étude.This study is about evaluation of 46 provenances trial of Acacia mangium established since 2006 in Ibi on the Batéké plateau in the Democratic Republic of Congo. Its objective is to estimate, after 7 years, the best provenances for the growth in height and the diameter and for the biomass and the stocks of carbon as well as the contents in carbon and nitrogen in soils under Acacia mangium provenances compared with savanna soils without Acacia. The provenances from Papua New Guinea as well as those from Queensland (Australia) followed by provenances from Malaysia, Vietnam, China, Fiji and the Philippines showed to be the best for all studied parameters.
23
Coutinho, André Luis da Cunha. "Estudo comparativo do crescimento inicial de plantas obtidas de pinhões de duas procedências e três variedades de pinheiro brasileiro." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2007. http://hdl.handle.net/10183/10909.
Full textAbstract:
Araucaria angustifolia é uma árvore longeva, de grande porte, sendo o elemento com dominância fisionômica das Florestas Ombrófilas Mistas do sul do Brasil. No outono e inverno, os pinhões são os principais recursos alimentares para a masto e ornitofauna locais. Com relação aos aspectos genéticos, trabalhos recentes mostraram que a espécie tem maior variabilidade intra do que interpopulacional; porém, aquela está sendo reduzida através do ininterrupto processo de fragmentação e destruição da paisagem. Infelizmente, o arcabouço legal para a proteção à espécie não está garantindo a sua conservação, e vimos, nos últimos 15 anos, a mesma ser incluída na lista de espécies ameaçadas de extinção, inicialmente como vulnerável e, mais recentemente, como criticamente em perigo. O objetivo desse trabalho foi avaliar e comparar o padrão de crescimento inicial, em massa e comprimento, de plantas obtidas de pinhões coletados de diferentes locais de ocorrência natural, para a variedade típica da espécie (São Francisco de Paula e Passo Fundo, RS), e de três variedades em co-ocorrência da mesma – angustifolia (típica), caiova e indehiscens. Um experimento em vasos e em casa de vegetação foi conduzido entre agosto de 2005 e abril de 2006, em Porto Alegre, RS. O delineamento experimental foi o de blocos casualizados, com 24 vasos em cada bloco, que representavam seis matrizes de cada um dos quatro grupos de plantas, totalizando 240 unidades experimentais. Os resultados indicaram uma significativa superioridade do crescimento da variedade angustifolia de São Francisco de Paula em relação às duas outras variedades, caiova e indehiscens, e à outra procedência – angustifolia de Passo Fundo. Sugere-se que e o maior crescimento inicialdaquele grupo possa ajudar a explicar a sua visível maior proporção nos fragmentos florestais, visto que um crescimento mais rápido pode potencialmente aumentar o recrutamento e sobrevivência de suas plântulas.Araucaria angustifolia is a long-lived, very tall tree, which dominates the physiognomy of the Mixed Ombrophyllous Forests of southern Brazil. In the fall and winter, the pine seeds (pinhões) are the main food resources for local mammals and birds. Regarding genetic aspects, recent studies have shown that the species has a greater intrathan inter-population variability; however, the former is being reduced due to the unstoppable processes of landscape fragmentation and destruction. Unfortunately, the legal measurements for the protection of the species are not ensuring its conservation, and in the past 15 years we have seen it being included in the list of threatened species, first as a vulnerable, and more recently as a critically endangered species. The purpose of this study was to evaluate and compare the pattern of initial growth of plants grown from seeds collected from different regions of natural occurrence of the species’ typical variety (São Francisco de Paula and Passo Fundo, RS), and from three co-occurring varieties – angustifolia (typical), caiova e indehiscens. A pot, green-house experiment was conducted between August 2005 and April 2006 in Porto Alegre, RS. The experimental design was of randomized complete blocks, with 24 plants per block, representing six mother-trees of each of the four groups of plants, totaling 240 experimental units. The results indicated a significant greater growth of the angustifolia variety from São Francisco de Paula when compared to the other two, caiova e indehiscens, and to the other provenance – angustifolia from Passo Fundo. We suggest that the superior growth of that group may help explain itsvisible greater proportion in the forest fragments, since a faster growth can potentially increase the recruitment and survival of its seedlings.
24
Taeger, Steffen [Verfasser], Annette [Akademischer Betreuer] Menzel, and Anton [Akademischer Betreuer] Fischer. "Impact of heat and drought on provenances of Scots pine (Pinus sylvestris L.) / Steffen Taeger. Gutachter: Annette Menzel ; Anton Fischer. Betreuer: Annette Menzel." München : Universitätsbibliothek der TU München, 2014. http://d-nb.info/1054752915/34.
Full text
25
Imbert, Stulc Anna. "Provenances géographiques des bois de la cathédrale de Notre-Dame de Paris. Compositions élémentaires et isotopiques en Sr et Nd : effet de la carbonisation, référentiels régionaux et applications." Electronic Thesis or Diss., Sorbonne université, 2023. https://accesdistant.sorbonne-universite.fr/login?url=https://theses-intra.sorbonne-universite.fr/2023SORUS594.pdf.
Full textAbstract:
La charpente de la cathédrale de Notre-Dame de Paris a failli disparaître lors de l’incendie qui l’a ravagé dans la journée du 15 avril 2019. Les vestiges des bois calcinés sont certes sans intérêt pour la reconstruction du bâtiment, mais ils recèlent en eux l’histoire d’un chantier qui s’est déroulé il y a plus de 800 ans. L’étude de ces archives archéologiques est ainsi une opportunité extraordinaire d’en apprendre plus sur son déroulement et sur la relation entre la société et la forêt au Moyen Âge Central (XIe-XIIIe siècles). Une des questions qui permettrait de mieux comprendre la gestion sylvicole et le commerce de bois à cette époque est celle de la provenance des bois. Cette thèse a pour but de préciser l’origine des bois utilisés pour la construction de la charpente avec l’aide des traceurs géochimiques, en particulier la composition multi-élémentaire et les rapports isotopiques du strontium (Sr) et néodyme (Nd) dans le bois. L’intérêt de ces traceurs est de discriminer des sites en fonction des contextes géologiques et pédologiques différents. Au cours de son développement, l’arbre absorbe des nutriments d’origine minérale qui sont en partie transférés dans les parois cellulaires du bois. Les teneurs en nutriments et leurs signatures isotopiques dans le bois reflètent celle des roches et sols sur lesquels l’arbre a poussé. Cette approche est appliquée ici pour la première fois sur le bois archéologique carbonisé. Avant de procéder à l’identification de l’origine des bois de Notre-Dame, 1) la conservation des traceurs géochimiques au cours de la carbonisation a été vérifiée expérimentalement, et 2) un référentiel des signatures multi-élémentaires et isotopiques dans des bois actuels a été réalisé à l’échelle du bassin versant de la Seine. L’exposition à la haute température n’a pas affecté la composition isotopique du Sr et Nd, mais a provoqué une volatilisation et la perte d’une partie des éléments. Des traceurs élémentaires ont été sélectionnés à partir des rapports d’éléments thermostables i.e., ceux dont la baisse de concentration a été négligeable (< 20 % à 800 °C). Le référentiel a été constitué à partir de 12 sites forestiers, chacun représentant un type de substrat spécifique, l’ensemble couvrant la diversité géologique et pédologique du bassin versant de la Seine. L’origine des bois actuels a pu être retracée avec une précision d’environ 80 % et la discrimination des sites s’est avérée fortement contrôlée par le rapport isotopique 87Sr/86Sr, et les rapports élémentaires Sr/Ca et Nd/Ca. Des bois archéologiques provenant de la charpente de Notre-Dame ont été caractérisés selon leur phase d’approvisionnement et leur signatures géochimiques ont été comparées entre elles, et avec celles des forêts référentielles. Les signatures géochimiques de la plupart des bois médiévaux sont caractéristiques des peuplements sur des sols limoneux profonds, en accord avec l'origine affirmée par des sources historiques, au sud-est de ParisThe wooden framework of the Notre-Dame de Paris Cathedral was almost destroyed by fire on April 15, 2019. Although the remains of the charred timbers are not of interest for the reconstruction, they conceal more than 800 years of the monument’s history. Their investigation thus constitutes an extraordinary opportunity to shed light on the construction techniques and relationships between society and forest resources during the Central Middle Ages (11th-13th centuries). A key point to better understand past forestry management and timber trade is the provenance of the timber woods. The aim of this work is to determine the geographical origin of the wood used to build the Notre-Dame's framework with the help of geochemical tracers, in particular the multi-elemental composition and isotope ratios of strontium (Sr) and neodymium (Nd). The strength of geochemical source tracing relies on the ability to discriminate sites based on their geological and soil contexts. During growth, trees absorb mineral-derived nutrients which are partially transferred to the wood cell walls. The abundance and isotopic signature of these mineral-derived nutrients in wood thus reflect those of rocks and soils on which the tree grew. This approach is applied here for the first time to carbonized archeological wood. Before proceeding to identification of the origin of the Notre-Dame timber woods, 1) the preservation of geochemical signals during carbonization was verified experimentally, and 2) a referential database of multi-elemental and Sr-Nd isotopic signatures in modern wood was built at the scale of the Seine River catchment. Although the carbonization led to volatilization and loss of some of the studied elements, it did not affect Sr and Nd isotopic composition of charred wood. Additionally, reliable elemental tracers for provenance were selected on the basis of the ratios of thermostable elements i.e., those whose decrease in concentration was negligible (< 20% at 800°C). The geochemical tracers were tested on modern wood from the 12 referential forests, each representing one type of substrate characteristic of the Seine River catchment area. Determination of the origin of modern wood could be achieved with an accuracy of around 80% and was strongly controlled by the 87Sr/86Sr isotope ratio, as well as by the Sr/Ca and Nd/Ca elemental ratios. The carbonized timbers from the Notre-Dame framework were characterized for cutting dates of trees and their geochemical signatures were compared with one another, and with those of wood from the referential forests. The geochemical signatures of most of the medieval woods were found to be characteristic of forest stands growing on deep silty soils, in agreement with findings from historical archives pointing towards an origin of the timbers in the south-east of Paris
26
Walter, Véronique. "Etude pétrographique, minéralogique et géochimique d'amphores gauloises découvertes dans le Nord-Est de la France, contribution à l'étude des matériaux, des technologies et des provenances." Université Louis Pasteur (Strasbourg) (1971-2008), 1988. http://www.theses.fr/1988STR20014.
Full textAbstract:
L'etude est principalement methodologique. Elle porte sur cent quarante tessons d'amphores dites "gauloises" de type g-1 et g-4 recoltees dans le ne de la france que des etudes morphologiques attribuent a la gaule narbonnaise. Un examen petrographique effectue par microscopie optique et electronique a balayage donne des indications sur la nature des materiaux utilises (abondance, taille et forme des quartz et des grains lithiques, forme cristallographique et chimisme des carbonates, presence de microorganismes avec pyrite framboidale. . . ), sur les effets de la cuisson (transformation des carbonates, evolution du fer. . . ), et sur ceux de l'enfouissement ; les enrichissements en phosphore sont notamment precises et attribues a des pollutions precoces dans des depotoirs. Les determinations mineralogiques par diffraction des rx permettent d'apprecier les temperatures de cuisson en distinguant quatre zones de temperature rencontrees : inferieures a 850c, de 850 a 950c, de 950 a 1050c, superieure a 1050c. Des attributions d'origines sont tentees par analyses chimiques multielementaires, en se rapportant aux donnees de la banque de reference du g. A. N. O. S. . La demarche statistique s'appuie sur la classification automatique. Elle permet d'emettre une hypothese raisonnable d'origine pour la moitie de l'echantillonnage. Une autre methode de traitement statistique est proposee qui trie les echantillons d'apres les compositions des "phases geochimiques" dont ils sont constitues, mises en evidence par analyse factorielleThis study, mainly methodological, concerns 140 sherds of so-called "gauloises" amphorae of g1 an g4 type, collected in the northeastern france. Morphological analysis ascribed these sherds to the "gallia narbonnensis". Petrographic examinations carried out by polarizing microscope and sem provided informations (i) on the nature of the used materials (percentage, size and shape of quartz and lithic grains, crystallographic and chemical features of carbonates, occurrence of microorganisms with framboidal pyrite, etc. ) ; (ii) on the results of firing (transformation of carbonates, iron evolution, etc); (iii) of entombed state ; the phosphorus enrichments are especially specified and ascribed to early pollutions in the rubbish tips. Mineralogic identifications by x ray diffraction permitted the author to estimate the firing temperatures. Four temperature categories were characterizing, e. G. Lower than 850c, between 850 and 950c, between 950 and 1050c and higher than 1050c. Multielemental chemical analysis with reference to the data bank of g. A. N. O. S. Were used to propose source attributions. The statistical process is based on the automatic classification and permits to put forward a reasonable hypothesis for the origin of half of the samples. Another automatic data processing is proposed which sorts the different samples according to the composition of their constituting geochemical phases identified by factorial analysis
27
Walter, Véronique. "Etude pétrographique, minéralogique et géochimique d'amphores gauloises découvertes dans le Nord-Est de la France contribution à l'étude des matériaux, des technologies et des provenances /." Lille 3 : ANRT, 1988. http://catalogue.bnf.fr/ark:/12148/cb37619199x.
Full text
28
Soto, Gonzales José Luis [UNESP]. "Qualidade fisiológica de sementes, crescimento e eficiência do uso do fósforo de Corymbia citriodora Hill & Johnson." Universidade Estadual Paulista (UNESP), 2010. http://hdl.handle.net/11449/105192.
Full textAbstract:
Made available in DSpace on 2014-06-11T19:33:38Z (GMT). No. of bitstreams: 0
Previous issue date: 2010-06-28Bitstream added on 2014-06-13T19:23:49Z : No. of bitstreams: 1
sotogonzales_jl_dr_jabo.pdf: 618573 bytes, checksum: b0cc9852a985c5c9b960df5cef06548c (MD5)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
Este trabalho objetivou estudar a qualidade fisiológica de sementes, crescimento e eficiência do uso do fósforo de Corymbia citriodora em condições de laboratório e viveiro. A qualidade fisiológica foi avaliada em sementes provenientes de 30 árvores matrizes de diferentes procedências pelos testes de envelhecimento acelerado, condutividade elétrica e teor de potássio. As médias entre matrizes foram comparadas pelo teste de Scott-Knott a 5% de probabilidade. Na casa de vegetação, a qualidade fisiológica foi avaliada quanto à germinação em recipientes de 50 cm3. Para a eficiência de utilização de fósforo, foram usadas plantas provenientes de quatro matrizes que receberam sete doses de fósforo (0, 25, 50, 75, 100, 125 e 150 mg dm-3 de P). O experimento foi instalado no esquema fatorial 7 x 4, com quatro repetições em vasos com 5 dm3 de solo, em casa de vegetação. Aos 90 dias após o transplantio das mudas, foram avaliados: a altura da planta e o diâmetro do colo; a massa de matéria seca de folhas, caule e galhos e raízes; o teor, a quantidade e a eficiência de utilização de fósforo nas folhas. As variações das características avaliadas em função dos teores de fósforo foram analisadas através de equações de regressão polinomial. O teste de envelhecimento acelerado separou as árvores matrizes em dois grupos de qualidade fisiológica. Os testes de condutividade elétrica e de teor de potássio discriminaram matrizes com alto, médio e baixo vigor de sementes. Houve correlação significativa entre o teste de emergência de plântulas em viveiro com os testes de vigor e entre testes de vigor. As plantas de quatro matrizes de C. citriodora de diferentes procedências responderam de maneira diferente às doses de fósforo, sendo que a recomendação se encontra entre 30 e 100 mg dm-3 de P de acordo com a característica avaliada e a matriz
This work aimed to study the physiological quality of seeds, growth and efficiency in the use of phosphorus of Corymbia citriodora in laboratory and greenhouse conditions. The physiological quality was evaluated in seeds from 30 mother trees of different provenances by accelerated aging and electrical conductivity tests and potassium content. Mean differences were detected by Scott-Knott test at 5% probability. In greenhouse, the physiological quality was evaluated by germination test in 50 dm3 pots. To evaluate the phosphorus use efficiency were used seedlings from four mother trees, which received seven different doses of phosphorus (0, 25, 50, 75, 100, 125 and 150 mg dm-3 of P). The experiment was carried out in 7 x 4 factorial design with four replication in 5 dm3 pots with soil in greenhouse. At 90 days after transplantation were evaluated: the height and diameter of plants, dry matter of leaves, steams, branches and roots, content and amount of phosphorus, and phosphorus use efficiency in leaves. The different effects due to phosphorus doses in characteristics were analyzed by polynomial regression equation. The results of accelerated aging test indicated the existence of two group of different physiological quality. The electrical conductivity and the potassium content allowed to distinguished mother trees with high, medium and low vigor of seeds. There was significant correlation between the seedling emergence test in greenhouse and vigor test, and between own the vigor tests. The C. citriodora seedlings from four mother trees of different provenances responded to phosphorus doses differently. The phosphorus recommendation is between 30 and 100 mg dm-3 of phosphorus according to evaluated characteristics and mother tree
29
Aquino, Noelle Farias de. "Crescimento inicial de três procedências de Jatropha curcas L. inoculadas com fungos micorrízicos." Universidade Estadual do Oeste do Paraná, 2009. http://tede.unioeste.br:8080/tede/handle/tede/1380.
Full textAbstract:
Made available in DSpace on 2017-07-10T17:37:35Z (GMT). No. of bitstreams: 1
Noelle_Farias_Aquino.pdf: 377139 bytes, checksum: 4b46af9081e8e4b3493e8cee5428bcf4 (MD5)
Previous issue date: 2009-08-08Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
The objective of this work was to identify differences in the development of Jatropha curcas from three origins and the influence of mycorrhizal fungi. Physic-nut seedlings were produced in the Municipality of Marechal Cândi Rondon PR and by the age of 60 days they were allocated in plastic vase with a capacity of 18 L. The vases were filled with three types of soil, control (no treatment), solarized and solarized with inoculum of mycorrhizal fungi. At 60 days after sowing, morphometric and destructive analysis were performed to determine fresh and dried masses. Throughout the period of the experiment there was gathering of morphometric data in order to determine the development of seedlings. At 60 days it was possible to note there are differences in the formation of seedlings between seeds from different provenances. Among the evaluated provenances, Mato Grosso do Sul showed higher averages for almost all evaluated parameters, except for number of leaves (NF), which the highest average was for the seedling from Minas Gerais. Seedlings produced with seeds from Pernambuco showed lower values in all variables measured, including the ratio between height and collar diameter (H: DC). The differences between the studied origins persisted after planting the seedlings in vases. As to soil treatments, the presence of mycorrhizal fungi in roots influenced the development, and its absence was not favorable to the development of seedlings, showing the same behavior throughout trial and for most variables
O objetivo deste trabalho foi avaliar o desenvolvimento de mudas de Jatropha curcas provenientes de três procedências e verificar a influência de fungos micorrízicos. Para tanto mudas de pinhão manso foram produzidas no Município de Marechal Cândido Rondon - PR, e aos 60 dias essas foram alocadas em vasos plásticos com capacidade de 18 L. Os vasos foram preenchidos com três tipos de solo, testemunha (sem tratamento), solarizado e solarizado com inóculo de fungos micorrizos. Aos 60 dias da semeadura realizou-se análise morfométrica e destrutiva de massas frescas e secas. Durante todo o período do experimento houve coleta de dados morfométricos para determinação do desenvolvimento das mudas. Aos 60 dias pode-se notar existência de diferenças no crescimento de mudas a partir de sementes provenientes de diferentes regiões. Entre as procedências avaliadas, a procedência Mato Grosso do Sul mostrou médias superiores em quase todos os parâmetros avaliados, com exceção de número de folhas (NF), cujo maior média foi obtida em mudas da procedência Minas Gerais. Mudas formadas com sementes da procedência Pernambuco apresentaram menores valores em todas as variáveis mensuradas, inclusive para a razão entre altura e diâmetro de coleto (H:DC). As diferenças entre as procedências persistiram após o plantio das mudas em vasos estudadas. Quanto aos tratamentos de solo, a presença de fungos micorrizos nas raízes influenciou o desenvolvimento, sendo a sua ausência desfavorável ao desenvolvimento das mudas, apresentando o mesmo comportamento durante todo experimento e para a maioria das variáveis estudadas
30
Soto, Gonzales José Luis. "Qualidade fisiológica de sementes, crescimento e eficiência do uso do fósforo de Corymbia citriodora Hill & Johnson /." Jaboticabal : [s.n.], 2010. http://hdl.handle.net/11449/105192.
Full textAbstract:
Orientador: Sérgio Valiengo ValeriBanca: Antônio Lúcio Mello Martins
Banca: Sérgio Roberto Garcia dos Santos
Banca: Rinaldo César de Paula
Banca: Mara Cristina Pessôa da Cruz
Resumo: Este trabalho objetivou estudar a qualidade fisiológica de sementes, crescimento e eficiência do uso do fósforo de Corymbia citriodora em condições de laboratório e viveiro. A qualidade fisiológica foi avaliada em sementes provenientes de 30 árvores matrizes de diferentes procedências pelos testes de envelhecimento acelerado, condutividade elétrica e teor de potássio. As médias entre matrizes foram comparadas pelo teste de Scott-Knott a 5% de probabilidade. Na casa de vegetação, a qualidade fisiológica foi avaliada quanto à germinação em recipientes de 50 cm3. Para a eficiência de utilização de fósforo, foram usadas plantas provenientes de quatro matrizes que receberam sete doses de fósforo (0, 25, 50, 75, 100, 125 e 150 mg dm-3 de P). O experimento foi instalado no esquema fatorial 7 x 4, com quatro repetições em vasos com 5 dm3 de solo, em casa de vegetação. Aos 90 dias após o transplantio das mudas, foram avaliados: a altura da planta e o diâmetro do colo; a massa de matéria seca de folhas, caule e galhos e raízes; o teor, a quantidade e a eficiência de utilização de fósforo nas folhas. As variações das características avaliadas em função dos teores de fósforo foram analisadas através de equações de regressão polinomial. O teste de envelhecimento acelerado separou as árvores matrizes em dois grupos de qualidade fisiológica. Os testes de condutividade elétrica e de teor de potássio discriminaram matrizes com alto, médio e baixo vigor de sementes. Houve correlação significativa entre o teste de emergência de plântulas em viveiro com os testes de vigor e entre testes de vigor. As plantas de quatro matrizes de C. citriodora de diferentes procedências responderam de maneira diferente às doses de fósforo, sendo que a recomendação se encontra entre 30 e 100 mg dm-3 de P de acordo com a característica avaliada e a matriz
Abstract: This work aimed to study the physiological quality of seeds, growth and efficiency in the use of phosphorus of Corymbia citriodora in laboratory and greenhouse conditions. The physiological quality was evaluated in seeds from 30 mother trees of different provenances by accelerated aging and electrical conductivity tests and potassium content. Mean differences were detected by Scott-Knott test at 5% probability. In greenhouse, the physiological quality was evaluated by germination test in 50 dm3 pots. To evaluate the phosphorus use efficiency were used seedlings from four mother trees, which received seven different doses of phosphorus (0, 25, 50, 75, 100, 125 and 150 mg dm-3 of P). The experiment was carried out in 7 x 4 factorial design with four replication in 5 dm3 pots with soil in greenhouse. At 90 days after transplantation were evaluated: the height and diameter of plants, dry matter of leaves, steams, branches and roots, content and amount of phosphorus, and phosphorus use efficiency in leaves. The different effects due to phosphorus doses in characteristics were analyzed by polynomial regression equation. The results of accelerated aging test indicated the existence of two group of different physiological quality. The electrical conductivity and the potassium content allowed to distinguished mother trees with high, medium and low vigor of seeds. There was significant correlation between the seedling emergence test in greenhouse and vigor test, and between own the vigor tests. The C. citriodora seedlings from four mother trees of different provenances responded to phosphorus doses differently. The phosphorus recommendation is between 30 and 100 mg dm-3 of phosphorus according to evaluated characteristics and mother tree
Doutor
31
Jansen, Kirstin [Verfasser], Arthur [Gutachter] Gessler, Ralf [Gutachter] Kätzel, and Andreas [Gutachter] Rigling. "Stable Isotopes and Metabolite Profiles as Physiological Markers for the Drought Stress Sensitivity in Douglas-Fir Provenances (Pseudotsuga menziesii (MIRB.) FRANCO) / Kirstin Jansen ; Gutachter: Arthur Gessler, Ralf Kätzel, Andreas Rigling." Berlin : Humboldt-Universität zu Berlin, 2018. http://d-nb.info/1184576890/34.
Full text
32
Chaba, Bachir. "Comportement comparé de jeunes plants de 3 provenances algériennes de pin d’Alep (Pinus halepensis Mill. ) cultivés en conditions hydriques limitantes et non limitantes : croissance et développement, composition glucidique et macrominérale." Nancy 1, 1998. http://www.theses.fr/1998NAN10034.
Full textAbstract:
Des semis de 3 provenances algériennes de pin d’Alep appartenant à trois variantes bioclimatiques : semi-aride continentale (Djelfa), subhumide littorale (Bainem) et semi-aride littorale (Ténès) ont été cultivés pendant 6 mois en minirhizotrons, en condition hydrique non limitante et en conditions hydriques limitantes induisant un potentiel de base maximum de -1,2mpa. L’analyse des résultats montre que : - les 3 provenances présentent un modèle de développement proche, aussi bien en condition hydrique non limitante (faible croissance aérienne, pivot à croissance rapide, système racinaire latéral superficiel) qu'en conditions hydriques limitantes (augmentation de la biomasse, ébauches d'auxiblastes, stimulation de l'appareil racinaire latéral). Les faibles différences entre provenances peuvent être en partie, liées à leur origine géographique. - ces provenances diffèrent dans l'organisation de leurs fractions glucidique et macro minérale. Ainsi, chez Djelfa, les glucides accumulés sous forme insoluble sont libérés, sous forme soluble, probablement par hydrolyse, lorsque les conditions hydriques deviennent limitantes. En revanche, chez les deux autres provenances, les glucides se trouvent sous forme soluble, immédiatement disponibles pour des réponses trophiques et/ou osmotiques. Concernant le contenu minéral des plants, les dosages montrent, en condition hydrique non limitante, une prédominance des ions K+, Nh4+ et Cl- chez les 3 provenances. En conditions hydriques limitantes, les variations enregistrées supposent l'implication de certains ions dans la mise en place de mécanismes d'ajustements osmotiques. En conclusion, ces résultats montrent bien que fortement proches dans leur modèle de croissance, ces 3 provenances montrent des caractéristiques nutritionnelles différentes supposant des stratégies différentes dans la gestion de leur contenu glucidique et macro minéral aussi bien en condition hydrique non limitante qu'en conditions hydriques limitantes
33
Vitasse, Yann. "Déterminismes environnemental et génétique de la phénologie des arbres de climat tempéré : suivi des dates de débourrement et de sénescence le long d'un gradient altitudinal et en tests de provenances." Thesis, Bordeaux 1, 2009. http://www.theses.fr/2009BOR13788/document.
Full textAbstract:
Afin d’appréhender la réponse des forêts au changement climatique, la phénologie de six espèces d’arbres a été étudiée de 2005 à 2007 à la fois le long d’un gradient altitudinal (fournissant un gradient thermique d’environ 7°C), et en tests de provenances disposés à différentes altitudes. L’objectif était (i) de quantifier les variations phénotypiques des dates de débourrement et de sénescence in situ, (ii) de déterminer les variables climatiques à l’origine de ces patrons, notamment à l’aide de modèles phénologiques, et (iii) d’évaluer la variabilité génétique et la plasticité phénotypique de ces deux événements phénologiques. Nos résultats montrent que la température printanière affecte différentiellement les dates de débourrement des six espèces (de -1.9 jours /°C à -6.5 jours /°C respectivement pour le hêtre et le chêne) mais pas entre les populations d’une espèce. Concernant les dates de sénescence, nous avons mis en évidence que la température induit un fort décalage de cet événement chez le chêne et le hêtre (> 5 jours /°C), alors qu’aucun cline n’est détecté chez l’érable et le frêne. L’allongement de la saison de végétation en réponse à une augmentation de la température est ainsi principalement la conséquence d’une avance des dates de débourrement pour toutes les espèces, à l’exception du hêtre qui présente une plus forte sensibilité pour la sénescence. Les modèles phénologiques utilisés soulignent l’importance des températures printanières affectant les bourgeons en phase de quiescence, tandis que les températures froides hivernales susceptibles de lever la dormance des bourgeons ne semblent pas significativement influencer l’occurrence du débourrement. Concernant la sénescence, les modèles ont mis en évidence le rôle prépondérant de la température pour le chêne sessile et le hêtre, tandis que la photopériode et d’autres facteurs pourraient être impliqués chez le frêne et l’érable. Ainsi, les modèles prédisent que la durée de saison de croissance du chêne va augmenter plus rapidement que celle du hêtre dans les prochaines décennies, et que l’équilibre compétitif entre ces deux espèces en terme phénologique est susceptible d’évoluer vers des altitudes plus élevées. Enfin, nous avons mis en évidence que les différentes populations échantillonnées présentaient de fortes adaptations pour la phénologie et la croissance malgré leur proximité géographique. De plus, les normes de réaction obtenues démontrent, d’une part, l’existence d’une forte plasticité phénologique des espèces, et d’autre part que cette plasticité semble être une caractéristique intrinsèque de l’espèce. Ces résultats révèlent que les arbres ont des capacités adaptatives importantes concernant les traits phénologiques qui pourraient leur permettre, dans une certaine mesure, de faire face au réchauffement du climatTo assess the response of forests to climate change, the phenology of six tree species was monitored from 2005 to 2007 both along an altitudinal gradient (providing a thermal gradient of about 7 ° C), and in provenance trials at various altitudes. The aim was (i) to characterize phenological patterns of leaf unfolding and leaf senescence timings in situ, (ii) to determine climatic variables responsible for these patterns, in particular using phenological models, and (iii) to assess the genetic variability and phenotypic plasticity of these phenological events. Our results showed that spring temperature differentially affected the leaf unfolding dates of the six species, with significant disparity in responses among species (from -1.9 days / ° C to -6.5 days / ° C for beech and oak, respectively) but not between the populations of a given species. Regarding the dates of senescence, we highlighted that temperature induced a strong shift of this event for oak and beech (> 5 days / ° C), while no cline was detected for sycamore and ash. The lengthening the growing season in response to an increase in temperature is thus mainly the result of an advance in flushing dates for all species except beech, whose growing season length changes were greatly resulting from shifts in senescence. Phenological models stressed the importance of forcing temperatures (effective during bud quiescence period), while the chilling temperatures (effective during dormancy) did not appear to significantly influence the occurrence of leaf unfolding. Concerning senescence variations , the models highlighted the role of temperature for sessile oak and beech, while the photoperiod and other factors could be involved in the ash and maple. Thus, for oak, the models predicted that the length of growing season will extend faster than the one for beech in the coming decades, and that the phenological competitive balance between these two species will likely to evolve towards higher altitudes. Finally, we showed that the sampled populations showed strong adaptations in phenology and growth in spite of their geographical proximity. Moreover, the reaction norms indicated, first, the existence of a strong phenological plasticity of species, and second, that this plasticity seemed to be an intrinsic characteristic of the species. These results underline that trees have consequent inherent adaptive capacities in phenological traits which may enable them to cope with global warming. However, the differences in phenological sensitivities among species suggest that global warming will significantly affect the competitive balance of species
34
Vitasse, Yann Michalet Richard Delzon Sylvain. "Déterminismes environnemental et génétique de la phénologie des arbres de climat tempéré suivi des dates de débourrement et de sénescence le long d'un gradient altitudinal et en tests de provenances /." S. l. : Bordeaux 1, 2009. http://ori-oai.u-bordeaux1.fr/pdf/2009/VITASSE_YANN_2009.pdf.
Full text
35
Kergė, Donatas. "Paprastosios eglės kilmių ir rinktinių medžių palikuonių šeimų genetinis-selekcinis įvertinimas ąžuolų būdos bandomuosiuose želdiniuose." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2013. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2013~D_20130621_144247-67712.
Full textAbstract:
Magistro darbe tiriama paprastosios eglės kilmių ir rinktinių medžių palikuonių šeimų genetinis–selekcinis įvertinimas bandomuosiuose želdiniuose. Darbo objektas – Ąžuolų Būdos girininkija, 55 kv., 6 skl. Augavietė Lc. Įveisti 1985 m. keturmečiais sodinukais. Plotas 1,5 ha.
Darbo tikslas – atlikti paprastosios eglės kilmių ir rinktinių medžių šeimų genetinį–selekcinį įvertinimą bandomuosiuose želdiniuose. Atrinkti pranašiausius genotipus (rinktinius medžius ir individus palikuonių šeimose) antros kartos miško sėklinėms plantacijoms veisti ir įvertinti selekcinį efektą.
Darbo metodai – atlikti 50-ties medžių medienos kietumo ir aukščio matavimai kiekviename variante ir kiekvieno medžio skersmens, stiebo tiesumo, dvistiebiškumo, pleištinių šakų įvertinimai. Medienos kietumas išmatuotas Pylodin prietaisu, aukštis – aukštimačiu, skersmuo – žerglėmis. Registruotos žuvusių medžių vietos ir apskaičiuotas išsilaikymas. Kokybiniai požymiai įvertinti pagal genetiniuose–selekciniuose tyrimuose naudojamą vizualaus medžių kokybinių požymių įvertinimo metodiką. Matavimų metu medelių amžius buvo 32 metai. Duomenų sisteminimas ir jų analizė atlikta, naudojant statistinių duomenų tvarkymo paketą Microsoft Excell, o duomenų statistiškai patikimi skirtumai nustatyti STEPDISC SAS analizės testu.
Darbo rezultatai. Gauti rezultatai atskleidė, kad 71 % bandomų šeimų augimu pralenkė vietinę kilmę. Šiek tiek mažesnė dalis šeimų buvo pranašesnės už vietinę kilmę pagal pleištinių šakų proporciją. Ir... [toliau žr. visą tekstą]Master's Thesis includes the study of Norway spruce provenances and plus trees progeny in the Ažuolų Būda field trial. The object of the study – Ažuolų Būda Forest District, block No. 55, plot No. 6. Site Lc. The field trial was established with 4 year old seedlings in 1985. The field area is 1.5 ha. Objective of the study – to perform genetic evaluation of Norway spruce provenances and plus trees progeny in the Ažuolų Būda field trial and select the best genotypes (parental plus trees and trees in progeny families) for the second generation seed orchards. Material and methods – wood hardness and total height of 50 trees was measured in each replicate. Diameter, stem straightness, multiple leader shoots, spike knots were registered for all the trees in the trial. Pilodyn 6J was used for measuring wood hardness, Vertex IV – for height, electronic Haglof callipers- for diameter. Survival was calculated by registering empty planting places. Quality traits were assessed using well known scales applied in tree breeding studies. At a time of assessment age of trees was 32 years. Data analysis was performed using Microsoft Excel and SAS 9.3 statistical package (SAS Mixed and Corr procedures). Study results. The results showed that 71% of tested families grew better than the local origin. Slightly smaller amount of families were better by proportion of spike knots. And only two families were less hardy by wood compared to local one. Population variance component was the largest for... [to full text]
36
Ajala, Michelle Cristina. "Efeitos do volume do recipiente na formação de mudas e de hidrogel na implantação de Jatropha curcas L." Universidade Estadual do Oeste do Paraná, 2009. http://tede.unioeste.br:8080/tede/handle/tede/1379.
Full textAbstract:
Made available in DSpace on 2017-07-10T17:37:35Z (GMT). No. of bitstreams: 1
Michelle_Cristina_Ajala.pdf: 881476 bytes, checksum: 0026973c05e1d9584bc3f31db5381e4b (MD5)
Previous issue date: 2009-08-07Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
This study aimed to compare containers for seedling production and to test the addition of hydrogel at planting of physic nut in West of Paraná. In the first experiment seedlings were produced with different volumes of containers, which were measured twice a month for height of the seedlings, collar diameter and percentage of survival. Them the seedlings were taken to field where they were measured every three months for seedling height, collar diameter, percentage of survival, number of branches, number of junctions, number of leaves and leaf area index. In a second test seedlings were produced from three different provenances, and had been added hydrogel at planting. This study showed the best results to the tubettes of 120 cm3, it also showed higher averages in percentage of survival (84,38%) while the mean in height increases did not differ statistically in treatment bags, which showed the highest average for this variable increments (1,48 cm). In field developing there was no significance differences in any of the variables. In the second test were not significant differences between the provenances, and between the use of hydrogel or not. Thus the use of hidrorretentor was not necessary to the seedlings of physic nut planted during spring in Paraná
Este trabalho objetivou comparar recipientes para produção de mudas de pinhão manso no oeste paranaense e testar a adição de hidrogel no momento do plantio em mudas de pinhão manso. No primeiro ensaio foram produzidas mudas com diferentes volumes de recipientes, nos quais foram mensuradas quinzenalmente a altura das mudas, o diâmetro de colo e a porcentagem de sobrevivência e após levadas a campo foram mensuradas trimestralmente altura das mudas, diâmetro de colo, porcentagem de sobrevivência, número de ramos, número de bifurcações, número de folhas e índices de área foliar. Em um segundo ensaio foram produzidas mudas oriundas de três procedências distintas, nas quais foram adicionados um hidrogel, no plantio. Com este estudo pode-se perceber que o recipiente que apresentou melhores resultados foi o tubete de 120 cm3, pois apresentou maiores médias em porcentagem de sobrevivência (84,38%) enquanto as médias em incrementos em altura não diferiram estatisticamente do tratamento sacos plásticos, o qual apresentou maiores incrementos médios para esta variável (1,48 cm). No desenvolvimento a campo não houve significância em nenhuma das variáveis analisadas. No segundo ensaio também não foram encontradas diferenças significativas entre as procedências, assim como entre o uso ou não de hidrogel, ou seja, não sendo necessário o uso deste hidrorretentor em mudas de pinhão manso plantadas na primavera no este paranaense
37
Martin, Bernard. "Amélioration génétique des Eucalyptus tropicaux : contribution majeure à la foresterie clonale." Paris 11, 1987. http://www.theses.fr/1987PA112140.
Full textAbstract:
La thèse présente une succession de dix publications de 1971 à 1987, groupées autour du thème central de l'amélioration des Eucalyptus tropicaux. La plupart des travaux ont été réalisés à Pointe-Noire (Congo) dans Le cadre du Centre Technique Forestier Tropical (C. T. F. T. ) et de L'Unité d'Afforestation Industrielle du Congo (U. A. I. C. ). Beaucoup de références viennent également des plantations de La Société Aracruz Florestal S. A. Au Brésil (Espirito-Santo). La présentation de L'ensemble des documents est réalisée sous forme d'une étude de synthèse utilisant également toute La bibliographie disponible. Cette étude s'articule en sept chapitres permettant un tour d'horizon complet sur l'introduction du genre en milieu tropical humide et la recherche de La production maximale à partir des espèces Les mieux adaptées, des provenances les plus performantes, des hybrides Les plus vigoureux et des clones Les plus avantageux. Divers aspects technologiques ont été passés en revue : exploration, sélection, hybridation, multiplication végétative, sélection clonale. Une approche en vraie grandeur de la culture clonale a été Largement examinée aussi bien à Pointe Noire (25 000 ha) qu'à Aracruz (90 000 ha) et Les dangers ont été estimés. Une forte attaque d'insectes a été enregistrée et, à cette occasion, on a pu évaluer Les moyens de Lutte chimique et génétique. On y trouve également Les arguments essentiels de défense de La foresterie clonaleThe thesis sets out a ser1es of 10 publications from 1971 to 1987 connected with tropical Eucalypt improvement as the main topic. Most of the studies were carried out at Pointe-Noire (Congo) at the Centre Technique Forestier Tropical (C. T. F. ) as well as at the Unité d'Afforestation Industrielle du Congo (U. A. I. C. ). A lot of results were also taken from the plantations of Aracruz Florestal S. A. In Brazil (Espirito-Santo). The documents as a whole were presented as a synthesis including the bibliography available at present. This study consists of seven chapters giving a complete survey of the introduction of the genus 1n tropical environment and the determination of the conditions for the maximal yield from the best adapted species, the provenances with the highest output, the most vigorous hybrids and the most advantageous clones. Various technological aspects were reviewed: exploration, selection, hybridization, vegetative propagation, clonal selection. A real-scale approach of the clonal culture was carefully investigated at Pointe-Noire (25 000 ha) as well as at Aracruz (90 000 ha) and dangers were estimated. A violent attack by insects was recorded. Thereby, chemical and genetical struggle means were evaluated. Fundamental arguments supporting clonal forestry are developed
38
Carata, Lucian. "Provenance-based computing." Thesis, University of Cambridge, 2019. https://www.repository.cam.ac.uk/handle/1810/287562.
Full textAbstract:
Relying on computing systems that become increasingly complex is difficult: with many factors potentially affecting the result of a computation or its properties, understanding where problems appear and fixing them is a challenging proposition. Typically, the process of finding solutions is driven by trial and error or by experience-based insights. In this dissertation, I examine the idea of using provenance metadata (the set of elements that have contributed to the existence of a piece of data, together with their relationships) instead. I show that considering provenance a primitive of computation enables the exploration of system behaviour, targeting both retrospective analysis (root cause analysis, performance tuning) and hypothetical scenarios (what-if questions). In this context, provenance can be used as part of feedback loops, with a double purpose: building software that is able to adapt for meeting certain quality and performance targets (semi-automated tuning) and enabling human operators to exert high-level runtime control with limited previous knowledge of a system's internal architecture. My contributions towards this goal are threefold: providing low-level mechanisms for meaningful provenance collection considering OS-level resource multiplexing, proving that such provenance data can be used in inferences about application behaviour and generalising this to a set of primitives necessary for fine-grained provenance disclosure in a wider context. To derive such primitives in a bottom-up manner, I first present Resourceful, a framework that enables capturing OS-level measurements in the context of application activities. It is the contextualisation that allows tying the measurements to provenance in a meaningful way, and I look at a number of use-cases in understanding application performance. This also provides a good setup for evaluating the impact and overheads of fine-grained provenance collection. I then show that the collected data enables new ways of understanding performance variation by attributing it to specific components within a system. The resulting set of tools, Soroban, gives developers and operation engineers a principled way of examining the impact of various configuration, OS and virtualization parameters on application behaviour. Finally, I consider how this supports the idea that provenance should be disclosed at application level and discuss why such disclosure is necessary for enabling the use of collected metadata efficiently and at a granularity which is meaningful in relation to application semantics.
39
MARINS, ANDRE LUIZ ALMEIDA. "PROVENANCE CONCEPTUAL MODELS." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2008. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=11880@1.
Full textAbstract:
CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICOSistemas de informação, desenvolvidos para diversos setores econômicos, necessitam com maior freqüência capacidade de rastreabilidade dos dados. Para habilitar tal capacidade, é necessário modelar a proveniência dos dados. Proveniência permite testar conformidade com a legislação, repetição de experimentos, controle de qualidade, entre outros. Habilita também a identificação de agentes (pessoas, organizações ou agentes de software) e pode ser utilizada para estabelecer níveis de confiança para as transformações dos dados. Esta dissertação propõe um modelo genérico de proveniência criado com base no alinhamento de recortes de ontologias de alto nível, padrões internacionais e propostas de padrões que tratam direta ou indiretamente de conceitos relacionados à proveniência. As contribuições da dissertação são portanto em duas direções: um modelo conceitual para proveniência - bem fundamentado - e a aplicação da estratégia de projeto conceitual baseada em alinhamento de ontologias.
Information systems, developed for several economic segments, increasingly demand data traceability functionality. To endow information systems with such capacity, we depend on data provenance modeling. Provenance enables legal compliance, experiment validation, and quality control, among others . Provenance also helps identifying participants (determinants or immanents) like people, organizations, software agents among others, as well as their association with activities, events or processes. It can also be used to establish levels of trust for data transformations. This dissertation proposes a generic conceptual model for provenance, designed by aligning fragments of upper ontologies, international standards and broadly recognized projects. The contributions are in two directions: a provenance conceptual model - extensively documented - that facilitates interoperability and the application of a design methodology based on ontology alignment.
40
Silles, Christopher Anthony. "Provenance-aware CXXR." Thesis, University of Kent, 2014. https://kar.kent.ac.uk/50499/.
Full textAbstract:
A provenance-aware computer system is one that records information about the operations it performs on data to enable it to provide an account of the process that led to a particular item of data. These systems allow users to ask questions of data, such as “What was the sequence of steps involved in its creation?”, “What other items of data were used to create it?”, or “What items of data used it during their creation?”. This work will present a study of how, and the extent to which the CXXR statistical programming software can be made aware of the provenance of the data on which it operates. CXXR is a variant of the R programming language and environment, which is an open source implementation of S. Interestingly S is notable for becoming an early pioneer of provenance-aware computing in 1988. Examples of adapting software such as CXXR for provenance-awareness are few and far between, and the idiosyncrasies of an interpreter such as CXXR—moreover the R language itself—present interesting challenges to provenance-awareness: such as receiving input from a variety of sources and complex evaluation mechanisms. Herein presented are designs for capturing and querying provenance information in such an environment, along with serialisation facilities to preserve data together with its provenance so that they may be distributed and/or subsequently restored to a CXXR session. Also presented is a method for enabling this serialised provenance information to be interoperable with other provenance-aware software. This work also looks at the movement towards making research reproducible, and considers that provenance-aware systems, and provenance-aware CXXR in particular, are well positioned to further the goal of making computational research reproducible.
41
Egan, Geoffrey. "Provenanced leaden cloth seals." Thesis, University College London (University of London), 1988. http://discovery.ucl.ac.uk/1349956/.
Full textAbstract:
This thesis considers the leaden seals which were attached to textiles from the late 14th- to the early 19th century in England as part of a system of industrial regulation and taxation. Almost all of the 1,345 seals and related items which are described here individually were recovered from the ground. This total comprises all the English seals examined which refer to their place of origin in the legends (many of these are alnage seals), all the known English seals of medieval date, and the English matrices for the cloth seals. The unsorted information about each item is presented, just as recorded, in Appendix 1. The historical context and development of cloth sealing in this country are discussed, and a chronological framework for the various stamped devices and forms of seal is proposed. Following a more detailed account of the known medieval seals are brief summaries of the main aspects of local textile industries and a synthesized description of the recorded seals county by county. A concluding section assesses the information provided by the known seals, and the degree of correspondence with data from historical sources. Directions for future studies are suggested. Further appendices provide statistical tables and maps of documentary-based information on levels of textile production at different periods, detailed discussions of the provenances and findspots of the recorded seals, an account of the largest known group of English seals, and documentary evidence for the dating of some of the seals from Norfolk. For the first time information has been presented systematically, and assessed in detail, both on the extent of survival and on the potential academic value of cloth seals found during excavations.
42
GOMES, LUCIANA DA SILVA ALMENDRA. "PROVENANCE FOR BIOINFORMATICS WORKFLOWS." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2011. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=18566@1.
Full textAbstract:
CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICOMuitos experimentos científicos são elaborados como fluxos de tarefas computacionais, que podem ser implementados através do uso de linguagens de programação. Na área de bioinformática é muito comum o uso de scripts ad-hoc para construir fluxos de tarefas. Os Sistemas de Gerência de Workflow Científico (SGWC) surgiram como uma alternativa a estes scripts. Uma das funcionalidades desses sistemas que têm recebido bastante atenção pela comunidade científica é a captura automática de dados de proveniência. Estes permitem averiguar quais foram os recursos e parâmetros utilizados na geração dos resultados, dentre muitas outras informações indispensáveis para a validação e publicação de um experimento. Neste trabalho foram levantados alguns desafios na área de proveniência de dados em SGWCs, como por exemplo (i) a heterogeneidade de formas de representação dos dados nos diferentes sistemas, dificultando a compreensão e a interoperabilidade; (ii) o armazenamento de dados consumidos e produzidos e (iii) a reprodutibilidade de uma execução específica. Estes desafios motivaram a elaboração de um esquema conceitual de proveniência de dados para a representação de workflows. Foi implementada também uma extensão em um SGWC específico (BioSide) para incluir dados de proveniência e armazená-los utilizando o esquema conceitual proposto. Foram priorizados neste trabalho alguns requisitos comumente encontrados em workflows de Bioinformática.
Many scientific experiments are designed as computational workflows, which can be implemented using traditional programming languages. In the Bioinformatics domain ad-hoc scripts are often used to build workflows. Scientific Workflow Management Systems (SWMS) have emerged as an alternative to those scripts. One particular SWMS feature that has received much attention by the scientific community is the automatic capture of provenance data. These allow users to track which resources and parameters were used to obtain the results, among many other required information to validate and publish an experiment. In the present work we have elicited some data provenance challenges in the SWMS context, such as (i) the heterogeneity of data representation schemes that hinders the understanding and interoperability; (ii) the storage of consumed and produced data and (iii) the reproducibility of a specific execution. These challenges have motivated the proposal of a data provenance conceptual scheme for workflow representation. We have implemented an extension of a particular SWMS system (Bioside) to include provenance data and store them using the proposed conceptual scheme. We have focused on some requirements commonly found in bioinformatics workflows.
43
AlOmeir, Omar. "A study of provenance in databases and improving the usability of provenance database systems." Thesis, University of British Columbia, 2015. http://hdl.handle.net/2429/55895.
Full textAbstract:
Provenance refers to information about the origin of a piece of data and the process that led to its creation. Provenance information has been a focus of database research for quite some time. In this field, most of the focus has been on the sub-problem of finding the source data that contributed to the results of a query. More formally, the problem is defined as follows: given a query q and a tuple t in the results of q, which tuples from the relation R accessed by q caused t to appear in the results of q. The most studied aspect of this problem has been on developing models and semantics that allow this provenance information to be generated and queried. The motivations for studying provenance in databases vary across domains; provenance information is relevant to curated databases, data integration systems, and data warehouses for updating and maintaining views.
In this thesis, I look extensively at provenance models as well as different system implementations.I compare the different approaches, analyze them, and point out the advantages and disadvantages of each approach. Based on my findings, I develop a provenance system based on the most attractive features of the previous systems, built on top of a relational database management system. My focus is on identifying areas that could potentially make provenance information easier to understand for users, using visualization techniques to extend the system with a provenance browsing component.
I provide a case study using my provenance explorer, looking at a large dataset of financial data that comes from multiple sources. Provenance information helps with tracking the sources and transformations this data went through and explains them to the users in a way they can trust and reason about. There has not been much work focused on presenting and explaining provenance information to database users. Some of the current approaches support limited facilities for visualizing and reporting provenance information. Other approaches simply rely on the user to query and explore the results via different data manipulation languages. My approach presents novel techniques for the user to interact with provenance information.Science, Faculty of
Computer Science, Department of
Graduate
44
Tang, Yaobin. "Butterfly -- A model of provenance." Worcester, Mass. : Worcester Polytechnic Institute, 2009. http://www.wpi.edu/Pubs/ETD/Available/etd-031309-095511/.
Full text
45
Bhatti, Ayesha. "Snippet Generation for Provenance Workflows." Thesis, Linköpings universitet, Institutionen för datavetenskap, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-71028.
Full textAbstract:
Scientists often need to know how data was derived in addition to what it is. The detailed tracking of data transformation or provenance allows result reproducibility, knowledge reuse and data analysis. Scientific workflows are increasingly being used to represent provenance as they are capable of recording complicated processes at various levels of detail. In context of knowledge reuse and sharing; search technology is of paramount importance specially considering the huge and ever increasing amount of scientific data. It is computationally hard to produce a single exact answer to the user's query due to sheer volume and complicated structure of provenance. One solution to this difficult problem is to produce a list of candidate matches and let user select the most relevant result. Here search result presentation becomes very important as the user is required to make the final decision by looking at the workflows in the result list. Presentation of these candidate matches needs to be brief, precise, clear and revealing. This is a challenging task in case of workflows as they contain textual content as well as graphical structure. Current workflow search engines such as Yahoo Pipes! or myExperiment ignore the actual workflow specification and use metadata to create summaries. Workflows which lack metadata do not make good summaries even if they are useful and relevant as search criteria. This work investigates the possibility of creating meaningful and usable summaries or snippets based on structure and specification of workflows. We shall (1) present relevant published work done regarding snippet building techniques (2) explain how we mapped current techniques to our work (3) describe how we identified techniques from interface design theory in order to make usable graphical interface (4) present implementation of two new algorithms for workflow graph compression and their complexity analysis (5) identify future work in our implementation and outline open research problems in snippet building field.
46
Boccianti, Giulia <1996>. "Provenance research e mercato dell'arte." Master's Degree Thesis, Università Ca' Foscari Venezia, 2022. http://hdl.handle.net/10579/21542.
Full textAbstract:
Questa tesi si pone l’obiettivo di delimitare i confini della disciplina della ricerca della provenance e di porre l’accento sui risvolti economici che questa ha sul mercato dell’arte, evidenziando il ruolo giocato dai principali attori. La ricostruzione dei passaggi di proprietà di un’opera d’arte è di fondamentale importanza per tutti coloro che si trovano coinvolti nel collezionismo, nello studio e nelle esposizioni d’arte, da un punto di vista sia attributivo che puramente legale. La qualità della provenance e la frequenza relativa al passaggio di proprietà possono influenzare profondamente il valore di mercato di un oggetto. Determinare l’autenticità di un’opera è un processo complesso e multidisciplinare che include, oltre alla capacità di leggere e interpretare dati scientifici, una comprensione della connoisseurship e della provenance. La provenance non è né un concetto stabile nel tempo, né tanto meno uno strumento d’uso costante a sostegno del giudizio. In conclusione, si procederà ad una valutazione dell’influenza della provenance all’interno delle principali fiere d’arte e del ruolo giocato dai vetting committee.
47
Sergent, Anne-Sophie. "Diversité de la réponse au déficit hydrique et vulnérabilité au dépérissement du douglas." Thesis, Orléans, 2011. http://www.theses.fr/2011ORLE2071.
Full textAbstract:
Avec plus de 400 000 ha, le douglas (Pseudotsuga Menziesii (Mirb.) Franco) est l’une des essences les plus plantées en France. Originaire de l’ouest de l’Amérique du Nord, cette essence introduite est appréciée des gestionnaires forestiers pour sa croissance rapide et la qualité de son bois. Cependant ses performances de productivité pourraient être compromises dans le contexte d’augmentation de la fréquence des sécheresses. Suite à la sécheresse exceptionnelle de 2003, le douglas a en effet connu des dysfonctionnements importants (mortalité, pertes foliaires, réduction de croissance …) et durables marquant l’entrée dans une phase de dépérissement. Les objectifs de ce travail sont (1) de vérifier si la sécheresse est l’aléa induisant le dépérissement, (2) de déterminer les facteurs écologiques et sylvicoles de vulnérabilité à la sécheresse et (3) de contribuer à l’exploration de la variabilité génétique de la réponse à la sécheresse au travers de l’étude de provenances issues de l’aire naturelle. L’analyse des signalements du Département de la Santé de la Forêt a montré que les deux principales régions affectées par ces dépérissements post 2003 sont la Bourgogne et le nord-est de la région Midi-Pyrénées. L’étude dendro-écologique menée dans ces deux régions nous a permis de démontrer (1) la très forte sensibilité de la croissance radiale à l’intensité du déficit hydrique du sol, (2) que si la sécheresse exceptionnelle de 2003 est l’aléa déclenchant du dépérissement, les sécheresses récurrentes entre 2003 et 2006 ont induit une perte de croissance radiale prolongée, (3) que les sols à faible réserve utile constitue un facteur de vulnérabilité au dépérissement. La fertilité minérale du sol évaluée par bio-indication apparaît comme un facteur clé de la récupération de la croissance. Lors de l’étude génétique, aucune différence de croissance en réponse à la sécheresse n’a pu être mise en évidence entre les provenances Washington et Oregon. L’ensemble de ces résultats permet de proposer des recommandations aux gestionnaires pour réduire les risques de dépérissement induits par la sécheresseWith more than 400 000 ha, Douglas fir (Pseudotsuga menziesii (Mirb.) Franco) is one of the most widely planted species in France. This introduced species native of western North America, is forest managers appreciated for its rapid growth and quality of its wood. However, its productivity performance could be compromised in the context of increased frequency of droughts. Following the exceptional drought of 2003, Douglas has indeed experienced major and durable shortcomings (mortality, leaf loss, reduced growth ...) marking the entry into a phase of decline. The objectives of this work are (1) to check if the hazard inducing decline is drought, (2) to determine the ecological and silvicultural factors of vulnerability to drought and (3) contribute to the exploration of the variability genetic response to drought through the study of provenances from the natural range. Analysis of reports of the Department of Health Forest showed that the two main areas affected by the dieback are post 2003 Burgundy and northeast of the Midi-Pyrenees. The dendro-ecological study conducted in these two regions allowed us to demonstrate (1) the high sensitivity of radial growth in the intensity of soil moisture deficit, (2) if the exceptional drought of 2003 is the decline inducing hazard, recurrent droughts between 2003 and 2006 induced a prolonged loss of radial growth, (3) that soils with low reserves are a factor of vulnerability to dieback. Mineral soil fertility assessed by bio-indication appears as a key factor in the recovery of growth. In the genetic study, no difference in growth in response to drought could be demonstrated between Washington and Oregon provenances. All these results allow us to make recommendations to managers to reduce the risk of dieback induced by drought
48
Fernando, Tharidu. "WorkflowDSL: Scalable Workflow Execution with Provenance." Thesis, KTH, Skolan för informations- och kommunikationsteknik (ICT), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-215714.
Full textAbstract:
Scientific workflow systems enable scientists to perform large-scale data intensive scientific experiments using distributed computing resources. Due to the diversity of domains and complexity of technology, delivering a successful outcome efficiently requires collaboration between domain experts and technical experts. However, existing scientific workflow systems require a large investment of time to familiarise and adapt existing workflows. Thus, many scientific workflows are still being implemented by script based languages (such as Python and R) due to familiarity and extensive third party library support. In this thesis, we implement a framework that uses a domain specific language that enables domain experts to collaborate on fine-tuning workflows. Technical experts are able to use Python for task implementations. Moreover, the framework includes support for parallel execution without any specialized code. It also provides a provenance capturing framework that enables users to analyse past executions and retrieve complete lineage of any data item generated. Experiments which were performed using a real-world scientific workflow from the bioinformatics domain show that users were able to execute workflows efficiently while using our DSL for workflow composition and Python for task implementations. Moreover, we show that captured provenance can be useful for analysing past workflow executions.Vetenskapliga arbetsflödessystem gör det möjligt för forskare att utföra storskaliga dataintensiva vetenskapliga experiment med hjälp av distribuerade datorresurser. På grund av mångfalden av domäner, och komplexitet i teknik, krävs samarbete mellan domänexperter och tekniska experter för att på ett effektivt sätt leverera en framgångsrik lösning. Befintliga vetenskapliga arbetsflödessystem kräver dock en stor investering i tid för att bekanta och anpassa befintliga arbetsflöden. Som ett resultat av detta implementeras många vetenskapliga arbetsflöden fortfarande av skriptbaserade språk (som Python och R) på grund av förtrogenhet och omfattande support från tredje part. I denna avhandling implementeras ett framework som använder ett domänsspecifikt språk som gör det möjligt för domänexperter att samarbeta med att finjustera arbetsflöden. Tekniska experter kan använda Python för att genomföra uppgifter. Dessutom innehåller ramverket stöd för parallell exekvering utan någon specialkod. Detta ger också ett ursprungsfångande framework som gör det möjligt för användare att analysera tidigare exekveringar och att hämta fullständiga härstamningar för samtliga genererade dataobjekt. Experiment som utfördes med hjälp av ett verkligt vetenskapligt arbetsflöde från bioinformatikdomänen visar att användarna effektivt kunde utföra arbetsflöden medan de använde en DSL för arbetsflödesammansättning och Python för uppdragsimplementationer. Dessutom visar vi hur fångade ursprung kan vara användbara för att analysera tidigare genomförda arbetsflödesexekveringar.
49
Ndeze, Michel. "Provenance variation in Maesopsis eminii Engl." Thesis, Bangor University, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.297671.
Full text
50
Rajbhandari, Shrija. "Provenance support for service-based infrastructure." Thesis, Cardiff University, 2007. http://orca.cf.ac.uk/54620/.
Full textAbstract:
Service-based architectures represent the next evolutionary step in the development of e-science, namely, the transformation of the Internet from a commercial marketplace to a mechanism for sharing multidisciplinary scientific resources. Although scientists in many disciplines have become increasingly reliant on distributed computing technologies for data processing and dissemination, the record of the processing history and origin of a data product, that is its data provenance, is often nonexistent, incomplete or impossible to recover by potential users. This thesis aims to address data provenance issues in service-based environments, particularly to answer how a scientist who performs a workflow execution in such an environment can (1) document the data provenance for a data item created by the execution, and (2) use the provenance documentation as a recipe to re-execute the workflow. This thesis pro poses a provenance model for delivering data provenance support in a service-based environment. Through the use of an example scenario of a scientific workflow in the Astrophysics domain, we explore and identify components of the provenance model. The provenance model proposes a technique to collect and record data provenance for service-based workflow executions. The technique facilitates the collection of data provenance of workflow execution at runtime. In order to record the collected data provenance, the thesis also proposes a specification to represent provenance to de scribe the processing history whereby a piece of data was derived. The thesis also proposes query interfaces that allow recorded provenance to be queried, has formulated a technique to construct provenance graphs, and supports the re-execution of past workflows. The provenance representation specification, the collection technique, and the query interfaces have been used to implement a prototype system to demonstrate the proposed model. The thesis also experimentally evaluates the scalability of the components implemented.