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Dissertations / Theses on the topic 'Botanical species'

Author: Grafiati

Published: 7 September 2021

Last updated: 29 July 2025

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1

Vickers, Adrian David. "The evaluation of woodland status by means of botanical indicator species." Thesis, Sheffield Hallam University, 2001. http://shura.shu.ac.uk/20477/.

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The aims of this study were to evaluate the use of botanical species as indicators of antiquity and environmental continuity and also to provide greater understanding of the processes responsible for the formation of woodland plant communities. In order to address this, the research was undertaken along four main themes: 1) Plant colonisation rates. 2) Plant species lists for woodland sites. 3) The impact of surveyor effort and strategy in devising species lists for sites. 4) The response of a typical woodland plant to management. 5) Plant communities in an area of Scottish pine forestIn parti

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2

Khosa, Mbokota Candy. "An investigation into the potential of crude and partially separated material of selected non-crop plant species as control agents of root-knot nematodes (Meloidogyne incognita) in tomato / Mbokota Candy Khosa." Thesis, North-West University, 2012. http://hdl.handle.net/10394/8705.

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Plant-parasitic nematodes (PPN) are a serious problem in vegetable production and can cause severe damage to several crops. In rural, low-input farming nematode damage is much higher and yields can be completely destroyed. Some Commercial nematicides have been withdrawn from the market due to health and environment concerns. These need to be replaced by alternative nematode control strategies of which soil amendments is one alternative. Nine non-crop plant species used in various forms in traditional healing, viz. Cassia abbreviata, Cissus cactiformis, Euphorbia ingens, Ipomoea kituiensis, Mae

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3

Leonora, Fältström. "Invasiva arter i botaniska trädgårdar : En studie av botaniska trädgårdar i Stockholm, Uppsala och Göteborg." Thesis, Umeå universitet, Institutionen för ekologi, miljö och geovetenskap, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-150136.

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The purpose of this study was to investigate if botanical gardens in Stockholm, Uppsala and Gothenburg could be a source for spread of invasive species in Sweden. The method consisted of visits to each garden with inventory of the collections and interviews with the staff. The species included in the study were either on or suggested for the list in the EU regulation 1143/2014 or listed by the Swedish Environmental Protection Agency as invasive or potentially invasive species in Sweden. 16 of the 34 species included in the study were found within or around one or more gardens and of those are

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4

Delia, Lorenzo. "Use of alternative wood chips from new botanical species. Their impact on phenolic composition and sensory properties of a white wine from Encruzado grape variety." Master's thesis, ISA-UL, 2016. http://hdl.handle.net/10400.5/12217.

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Mestrado Vinifera Euromaster - Instituto Superior de Agronomia - UL<br>The aim of this study was to evaluate the effects that Acacia (Robinia pseudoacacia), Cherry (Prunus avium), American oak (Quercus alba) and French oak (Quercus petraea) wood chips have on the evolution of the phenolic composition and sensorial properties of a white wine from Encruzado grape variety, during a storage period of 4 weeks. Chemical analysis were carried out: total phenols, flavonoid and non-flavonoid phenols, chromatic aspects, susceptibility to browning and tanning power. A sensory analysis was also

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5

Köchy, Martin, and Katja Tielbörger. "Hydrothermal time model of germination : parameters for 36 Mediterranean annual species based on a simplified approach." Universität Potsdam, 2006. http://opus.kobv.de/ubp/volltexte/2007/1240/.

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Germination rates and germination fractions of seeds can be predicted well by the hydrothermal time (HTT) model. Its four parameters hydrothermal time, minimum soil temperature, minimum soil moisture, and variation of minimum soil moisture, however, must be determined by lengthy germination experiments at combinations of several levels of soil temperature and moisture. For some applications of the HTT model it is more important to have approximate estimates for many species rather than exact values for only a few species. We suggest that minimum temperature and variation of minimum moisture ca

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6

Vinya, Royd. "Stem hydraulic architecture and xylem vulnerability to cavitation for miombo woodlands canopy tree species." Thesis, University of Oxford, 2010. http://ora.ox.ac.uk/objects/uuid:9028b995-5379-4969-8a7b-59a7aa7ab533.

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Africa's miombo woodlands constitute one of the most important dry tropical forests on earth, yet the hydraulic function of these woodlands remains poorly researched. Given the current predictions of increased aridity by the end of this century in the miombo ecoregion, understanding the likely response of miombo woodlands tree species to water stress is crucial in planning adaptation strategies. Predicting the response of miombo woodlands to future climate trends is hampered by a lack of knowledge on the physiology of the common miombo woodlands tree species. In particular, plant-water relatio

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7

Santos, Filipa Ferreira Reis Cardoso dos. "Use of alternative wood chips from new botanical species. Their impact on phenolic composition and sensory properties of a rose wine from Touriga Nacional grape variety." Master's thesis, ISA, 2017. http://hdl.handle.net/10400.5/14854.

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Mestrado em Viticultura e Enologia / Instituto Superior de Agronomia / Faculdade de Ciências. Universidade do Porto<br>The aim of this study was to evaluate the effects that acacia (Robinia pseudoacacia), cherry (Prunus avium), American and French oak (Quercus alba and Quercus petraea) wood chips and the evolution of the phenolic composition and sensorial properties of a rose wine made from Touriga Nacional grape variety during a storage period of 20 days. Chemical analysis were carried out: total phenols, flavonoid and non-flavonoid phenols, chromatic characteristics and tanning power.

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8

Gustavsson, Eva. "Grassland plant diversity in relation to historical and current land use /." Uppsala : Dept. of Ecology, Swedish University of Agricultural Sciences, 2007. http://epsilon.slu.se/2007106.pdf.

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9

Lino, João da Silva Fonseca Correia. "Composição fenólica e características cromáticas de madeiras de carvalho Limousin e de castanheiro (utilizadas em vasilhas e sob a forma de aduelas) destinadas ao envelhecimento de aguardente vínica." Master's thesis, Universidade de Évora, 2014. http://hdl.handle.net/10174/20926.

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A tecnologia tradicional de envelhecimento de aguardentes vínicas,em vasilha de madeira, envolve um custo elevado, devido ao longo período de contacto entre a madeirae a aguardente e à existência de uma perda significativa desta última por evaporação. A necessidade de reduzir o custo de investimento, justifica pois a procura de sistemas alternativos de envelhecimento.Como tal, o objetivo do presente trabalho consiste noestudo das características físico-químicas das madeiras de duas espécies botânicas (carvalho francês Limousin e o castanheiro), com queima média mais, utilizadas em simultâneo n

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Baranauskas, Alius. "Dzūkijos nacionalinio parko Liškiavos botanikos sodas: retų ir nykstančių augalų rūšių natūralizacijos galimybės." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2005. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2005~D_20050610_132009-99372.

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PAPER The possibilities of naturalization of rare and vanishing plants’ species are surveyed in master’s study The subject of research - The botanical gardens of Liskiava with the rare and vanishing plants’ species cultured and naturalized there. Objective of the research – Naturalized species of the plants: Turk’s-cap (Lilium martagon), medicinal angelica (Angelica archangelica), perennial satinflower (Lunaria rediviva), and ivy bedstraw (Hedera helix). Also the naturalization in site of rare plants is observed and estimated. Methods of study – Some studied plants were brought from their natu

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Shukla, Yatin Jagannath. "Phytochemical studies of botanicals : Hoodia Gordonii and Caralluma species /." Full text available from ProQuest UM Digital Dissertations, 2009. http://0-proquest.umi.com.umiss.lib.olemiss.edu/pqdweb?index=0&did=1799143131&SrchMode=1&sid=7&Fmt=2&VInst=PROD&VType=PQD&RQT=309&VName=PQD&TS=1268341330&clientId=22256.

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Thesis (Ph.D.)--University of Mississippi, 2009.<br>Typescript. Vita. Major professor: Dr. Ikhlas A. Khan Includes bibliographical references (leaves 277-303). Also available online via ProQuest to authorized users.

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Del, Galdo Vittorio. "Impact of the use of different blends of wood chips from diverse botanical species on quality parameters of white wine from Encruzado variety. A study on the effects of a different kind of wood on a white wine with no contact with lees." Master's thesis, ISA/UL, 2018. http://hdl.handle.net/10400.5/17935.

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Mestrado Vinifera Euromaster - Viticulture and Enology - Instituto Superior de Agronomia<br>The aim of this study was to assess the influence of blends of wood from different botanical species in a white wine from Encruzado variety; the botanical species used in this study were French oak (Quercus peatraea), American oak (Quercus alba) and Cherry (Prunus avium) during a 60 days maceration period, with sampling done after 15, 30 and 60 days. The blends were obtained by combining 2 woods species in a ratio of 1:1, obtaining 3 blends; that is, Cherry and American oak (Ch+Am), French and Americ

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Sarkinen, Tiina E. "Historical assembly of seasonally dry tropical forest diversity in the tropical Andes." Thesis, University of Oxford, 2010. http://ora.ox.ac.uk/objects/uuid:426466e7-6e9b-4a89-9d54-5962eb370fd2.

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The relative contributions of biome history and geological setting to historical assembly of species richness in biodiversity hotspots remain poorly understood. The tropical Andes is one of the world’s top biodiversity hotspots, and with its diverse biomes and the relatively recent but dramatic uplift, the Andes provides an ideal study system to address these questions. To gain insights into the historical species assembly of the tropical Andes, this study focuses on investigating patterns of plant species diversification in the Andean seasonally dry tropical forest (SDTF) biome. Three plant g

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Maharaj, Shobha S. "The impact of climate change on the small island developing states of the Caribbean." Thesis, University of Oxford, 2011. http://ora.ox.ac.uk/objects/uuid:914cc340-83e1-4ea4-b985-fe863b1dea7d.

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Small Island Developing States (SIDS) of the Caribbean are one of the world’s ‘hottest’ ‘biodiversity hotspots’. However, this biodiversity continues to be threatened by habitat loss, and now, by climate change. The research reported here investigated the potential of species distribution modelling (SDM) as a plant conservation tool within Caribbean SIDS, using Trinidad as a case study. Prior to the application of SDM, ancillary analyses including: (i) quantification and mapping of forest cover change (1969 to 2007) and deforestation rates, and (ii) assessment of the island’s vegetation commun

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Cotti, Claudia <1977&gt. "Molecular markers for the assessment of genetic variability in threatened plant species." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2008. http://amsdottorato.unibo.it/660/1/Tesi_Cotti_Claudia.pdf.

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La variabilità genetica è un importante strumento per lo studio e la conservazione della biodiversità in specie rare e minacciate di estinzione. Durante il mio dottorato mi sono quindi occupata di mettere a punto diverse metodologie molecolari al fine di valutare la diversità genetica in due specie rare della flora italiana che presentano problematiche diverse e specifiche. I marcatori arbitrari RAPD e i marcatori semi-arbitrari ISSR sono stati utilizzati per valutare la diversità genetica in Quercus crenata Lam. e per confermare l’ipotesi della sua origine ibridogena dalle due specie pr

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Cotti, Claudia <1977&gt. "Molecular markers for the assessment of genetic variability in threatened plant species." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2008. http://amsdottorato.unibo.it/660/.

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La variabilità genetica è un importante strumento per lo studio e la conservazione della biodiversità in specie rare e minacciate di estinzione. Durante il mio dottorato mi sono quindi occupata di mettere a punto diverse metodologie molecolari al fine di valutare la diversità genetica in due specie rare della flora italiana che presentano problematiche diverse e specifiche. I marcatori arbitrari RAPD e i marcatori semi-arbitrari ISSR sono stati utilizzati per valutare la diversità genetica in Quercus crenata Lam. e per confermare l’ipotesi della sua origine ibridogena dalle due specie pr

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17

Testa, Pamela Grace. "Botanical Specimens: A Series of Relief and Intaglio Print Variations Indexing Plant Forms." Kent State University / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=kent1366128406.

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Gurbanli, Samira <1995&gt. "Effect of Ibuprofen on the germination niche of halophyte species." Master's Degree Thesis, Università Ca' Foscari Venezia, 2020. http://hdl.handle.net/10579/17349.

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Halophytes are the main plant species of salt marshes, which are one of the most important habitats worldwide due to their ecological value and economic benefits. Pharmaceutical pollution has recently become one of the major human-induced threats to the natural environment. However, the effects of pharmaceutical pollution on plants are still unexplored. This research aimed to investigate the effect of Ibuprofen, one of the most common pharmaceuticals found in water bodies, on salt marshes plants. A negative effect of emergent pollutants like Ibuprofen on germination percentage or germination t

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Slaviero, Antonio <1986&gt. "Ecology and conservation strategies of target dry grassland orchid species (Orchidaceae)." Doctoral thesis, Università Ca' Foscari Venezia, 2015. http://hdl.handle.net/10579/8345.

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A causa del loro elevato livello di specializzazione ecologica, le Orchidaceae sono specie altamente vulnerabili e minacciate a scala globale ma anche bioindicatori dello stato degli habitat in cui vivono. Al fine di salvaguardare la biodiversità si rende necessario un approccio conservativo basato sulla conoscenza dell’ecologia delle specie, degli habitat in cui vivono e dei rapporti con altri organismi. Questa tesi considera tre orchidee (A. morio; H. adriaticum, O. sphegodes) quali target di studio per comprendere quali fattori ecologici siano i driver della loro fitness in un habitat parti

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Woelkerling, William J. "Aquatic botanical studies : with special reference to the red algal families, Corallinaceae and Acrochaetiaceae /." Title page, contents and abstract only, 1986. http://web4.library.adelaide.edu.au/theses/09SD/09sdw842.pdf.

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Maunder, Michael. "Botanic garden response to the biodiversity crisis : implications for threatened species management." Thesis, University of Reading, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.363658.

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Changes in intramuscular connective tissue brought about by conditioning were investigated in bovine muscles of different quality. Perimysial and endomysial collagens were solubilized to a small extent during conditioning and residual insoluble collagens in both connective tissue domains were damaged by proteolytic processing. Yields of soluble perimysial material from unconditioned muscles were significantly lower (p = 0.096) than from conditioned muscles. Solubilized perimysial collagen from unconditioned muscles was significantly lower (p = 0.015) than from conditioned muscles with 1±0.8 %

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ROSATTO, STEFANO. "Integrated approach on the rhizosphere response to Nickel in a facultative hyperaccumulator species." Doctoral thesis, Università degli studi di Genova, 2019. http://hdl.handle.net/11567/944976.

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The contamination of metals like Nickel (Ni) in the soil represents a serious threat worldwide. To counteract this phenomenon, hyperaccumulator plant species, able to remove metal from soil and store it at high concentration in shoots, are employed for metal phytoremediation purposes. Native microbial communities occurring in the rhizosphere of hyperaccumulators often promote plant growth and metal uptake. So far, each abiotic and biotic rhizospheric components (soil, root system and microbiota) have been used without considering the reciprocal interactions and the responses to Ni stress as

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23

Piccoli, Stefano <1995&gt. "Spatial patterns and drivers of three invasive alien plant species in coastal dunes of the North Adriatic coast." Master's Degree Thesis, Università Ca' Foscari Venezia, 2019. http://hdl.handle.net/10579/16110.

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L’invasione di specie aliene è considerata una delle cause più importanti di perdita della biodiversità. Le specie aliene vengono trasportate accidentalmente dall'uomo verso nuovi habitat, dove si insediano e si riproducono adattandosi alle nuove condizioni ambientali. Questo studio mira ad analizzare i principali fattori che influenzano la distribuzione spaziale di tre specie aliene, utilizzando transetti lineari paralleli alla costa e perpendicolari ai sentieri di accesso alla spiaggia. Sono stati inclusi fattori biotici (specie native), abiotici (morfologia dell’area) e antropici (vicinanza

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ONGARO, SILVIA. "Ecology of Mediterranean lichens and plants: application of species distribution models." Doctoral thesis, Università degli Studi di Trieste, 2019. http://hdl.handle.net/11368/2962383.

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Many studies include Species Distribution Modelling (SDM) techniques to define spatial biogeographic patterns of species and to explore ecological variability. As first, a study on the ecology of infrageneric taxa of genus Solenopsora is presented. The genus includes 25 species of foliose, rupicolous lichens, mostly occurring in temperate and subtropical regions. In Europe, only some taxa range from central Europe (with continental/Atlantic climate) to the Mediterranean, while others are restricted to Mediterranean area. The aim was to explore ecological variability of infrageneric taxa (with

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Gill, Estelle. "Conservation genetics of the species complex Cochlearia officinalis L. s.l. in Britain." Thesis, University of Edinburgh, 2008. http://hdl.handle.net/1842/2429.

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The genus Cochlearia is a taxonomically complex genus with a circumpolar distribution. In common with many other post-glacial colonisers it exhibits complex patterns of morphological and ecological variation. The genus has been the subject of continued taxonomic controversy, especially within the species complex C. officinalis s.l. The focus of this study was to investigate whether the three rare putative endemic Cochlearia officinalis s.l. taxa in Britain: C. micacea, C. officinalis subsp. scotica and C. atlantica were sufficiently distinctive to warrant endemic species or taxon status at any

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Bolzan, Anna <1979&gt. "Analisi dei parametri vegetazionali e dei caratteri funzionali di specie guida come strumenti di studio di comunità prative." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2009. http://amsdottorato.unibo.it/1969/1/bolzan_anna_tesi.pdf.

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Lo studio condotto si propone l’approfondimento delle conoscenze sui processi di evoluzione spontanea di comunità vegetali erbacee di origine secondaria in cinque siti all’interno di un’area protetta del Parco di Monte Sole (Bologna, Italia), dove, come molte aree rurali marginali in Italia e in Europa, la cessazione o riduzione delle tradizionali pratiche gestionali negli ultimi cinquant’anni, ha determinato lo sviluppo di fitocenosi di ridotto valore floristico e produttivo. Tali siti si trovano in due aree distinte all’interno del parco, denominate Zannini e Stanzano, selezionate in quanto

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Bolzan, Anna <1979&gt. "Analisi dei parametri vegetazionali e dei caratteri funzionali di specie guida come strumenti di studio di comunità prative." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2009. http://amsdottorato.unibo.it/1969/.

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Lo studio condotto si propone l’approfondimento delle conoscenze sui processi di evoluzione spontanea di comunità vegetali erbacee di origine secondaria in cinque siti all’interno di un’area protetta del Parco di Monte Sole (Bologna, Italia), dove, come molte aree rurali marginali in Italia e in Europa, la cessazione o riduzione delle tradizionali pratiche gestionali negli ultimi cinquant’anni, ha determinato lo sviluppo di fitocenosi di ridotto valore floristico e produttivo. Tali siti si trovano in due aree distinte all’interno del parco, denominate Zannini e Stanzano, selezionate in quanto

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Troiani, Natalia <1985&gt. "Species and Functional Composition of some Abandoned Fields in the Northern Apennines (Italy). A Detailed Overview with particular Reference to the Habitat 6210 in the EU 92/43 Directive." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2016. http://amsdottorato.unibo.it/7324/1/tesi_dott_Troiani.pdf.

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Abandoned croplands can be considered a new category of “scattered elements” of mountain landscapes. To gain deeper understanding of the conservation status (sensu EEC Directive 92/43) of abandoned cropland in the northern Apennines, we coupled the concepts of the social behavior type (SBT) and the functional assessment of plant communities. SBTs refer to behaviour and ecological attributes of species at a given observation level and allow the understanding of the plant community conservation status, while the functional approach may help in predicting changes of species composition along dist

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Troiani, Natalia <1985&gt. "Species and Functional Composition of some Abandoned Fields in the Northern Apennines (Italy). A Detailed Overview with particular Reference to the Habitat 6210 in the EU 92/43 Directive." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2016. http://amsdottorato.unibo.it/7324/.

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Abandoned croplands can be considered a new category of “scattered elements” of mountain landscapes. To gain deeper understanding of the conservation status (sensu EEC Directive 92/43) of abandoned cropland in the northern Apennines, we coupled the concepts of the social behavior type (SBT) and the functional assessment of plant communities. SBTs refer to behaviour and ecological attributes of species at a given observation level and allow the understanding of the plant community conservation status, while the functional approach may help in predicting changes of species composition along dist

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Nascimbene, Juri. "Lichens as indicators of ecological continuity in subalpine forests case studies in the Paneveggio Forest (NE Italy)." Doctoral thesis, Università degli studi di Trieste, 2008. http://hdl.handle.net/10077/2656.

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2006/2007<br>In the Italian Alps subalpine forests are still intensively managed for timber production. The increasing interest on near-to-nature silvicolture has favoured a scientific-based and multi-purpose management approach whose models are often developed on the basis of ecological studies in the remnant near-natural sites. This could apply also to lichens, whose role in biodiversity conservation in subalpine coniferous forests of the Italian Alps is still largely unknown. Thus, testing the relations between tree parameters, the availability of different types of Coarse Woody Debris (CWD

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GALIE', MARCO. "Supporting ecological restoration of Italian mountain grasslands: an investigation of intra- and inter-species variation in seed germination behaviour in native grasses." Doctoral thesis, Università Politecnica delle Marche, 2013. http://hdl.handle.net/11566/242704.

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Il presente studio risponde alla necessità di acquisire maggiori conoscenze riguardo il possibile impiego di germoplasma autoctono nel restauro delle praterie secondarie, specialmente di quelle protette dalla Direttiva Habitat (92/43/CEE) e riconducibili all’habitat 6210 “Formazioni erbose secche seminaturali e facies coperte da cespugli su substrato calcareo (Festuco-Brometalia)”. I semi trattati in questo studio possono essere usati anche in altri ambienti, quali fossi e margini stradali, o nel restauro di praterie all’interno di HNVf, al posto delle sementi commerciali. Ciò ridurrebbe l’inq

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Silva, Sandra Máscimo da Costa e. "Caracterização agronômica de variedades botânicas de Hancornia speciosa Gomes do Cerrado." Universidade Federal de Goiás, 2013. http://repositorio.bc.ufg.br/tede/handle/tede/3378.

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Submitted by Cássia Santos (cassia.bcufg@gmail.com) on 2014-10-14T15:00:20Z No. of bitstreams: 2 Tese - Sandra Mascimo da Costa e Silva - Agronomia.pdf: 4946807 bytes, checksum: 244c1a861b4600b10adfc8281824243a (MD5) license_rdf: 23148 bytes, checksum: 9da0b6dfac957114c6a7714714b86306 (MD5)<br>Approved for entry into archive by Jaqueline Silva (jtas29@gmail.com) on 2014-10-17T21:41:42Z (GMT) No. of bitstreams: 2 Tese - Sandra Mascimo da Costa e Silva - Agronomia.pdf: 4946807 bytes, checksum: 244c1a861b4600b10adfc8281824243a (MD5) license_rdf: 23148 bytes, checksum: 9da0b6dfac957114c6a7714714b8

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Bianchelli, Maurizio. "Analisi delle popolazioni e germinabilità dei semi di due specie endemiche marchigiane e rischio di estinzione: Moehringia papulosa Bertol. e Polygala pisauriensis Caldesi." Doctoral thesis, Università Politecnica delle Marche, 2008. http://hdl.handle.net/11566/242392.

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Mariani, C. "MORFOLOGIA, FITOCHIMICA E ATTIVITÀ BIOLOGICA DI SPECIE ITALIANE DEL GENERE ACONITUM." Doctoral thesis, Università degli Studi di Milano, 2008. http://hdl.handle.net/2434/60050.

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NUCCI, ALESSIA. "Distribution patterns of riparian plant species across river of Sardinia and Tuscany." Doctoral thesis, Università degli Studi di Cagliari, 2011. http://hdl.handle.net/11584/266292.

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This research project aims to analyze riparian vascular flora of four Mediterranean rivers belonging to two different regions (Sardinia and Tuscany). It focuses on the analysis of floristic differences, on distributional trends of functional and ecological groups, alien and endemic species, and also on the application of landscape classifications to be used as surrogate in conservation planning. The main goal is to evaluate similarities and differences among these rivers in the frame of a regional scale approach of study, thus contributing to improve the knowledge about their internal dy

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MACRI', CARMELO NICODEMO. "Adaptations of plant species to environmental changes." Doctoral thesis, Università degli studi di Genova, 2020. http://hdl.handle.net/11567/1003150.

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The future climate change represents the biggest challenge for plant and animal species. The scenarios forecasted by the IPCC predict a global increase in temperatures and regional changes in rainfall during this century. Therefore, studying the relationship between climate and several traits of species is crucial in our understanding of the effects that future changes may have on plants. Species growing along a wide environmental gradient are a suitable study model to verify the relationship between intraspecific variability and both current and future climate. The aim of my PhD project is to

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Mangili, F. "COROLOGIA, AUTOECOLOGIA E SINECOLOGIA DI ANDROSACE BREVIS (HEGETSCHW.) CES." Doctoral thesis, Università degli Studi di Milano, 2016. http://hdl.handle.net/2434/437391.

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Androsace brevis is a protected species according to Regional Law 10/2008, included in the National Red List because of its status as an endemic and as a rare species in its distribution range. It is a high altitude, light-demanding cushion plant, with an early flowering period (end of May to the start of June), present above 2000 m asl on rocky ridges exposed to strong winds, on prealpine terrigenous substrates. The distribution range of A. brevis is not yet well defined, and is peculiar compared to the distribution range of other Lombardy endemic species; it consists of two large discontinuo

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ZANZOTTERA, MAGDA. "TRAIT-BASED FUNCTIONAL CHARACTERIZATION OF PLANT SPECIES AND COMMUNITIES: TRENDS AND ADAPTIONS TO ENVIRONMENT IN ALPINE AND EUROPEAN VEGETATION." Doctoral thesis, Università degli Studi di Milano, 2021. http://hdl.handle.net/2434/844440.

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Over the last few decades, plant functional traits (morphological, physiological or phenological features, measurable at the individual level, with a direct or indirect effect on whole-plant fitness) have become widely applied to plant ecology; they provide many insights into plant responses to ecological factors, plant resource acquisition and use, plant assemblages and relations within and between communities, from individual to ecosystem scale. A small set of traits that co-vary recurrently among environments has been used to globally identify certain axes of variation, representing the dif

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PORCEDDU, MARCO. "Germination niche of Sardinian endemic species in mountain riparian deciduous forests." Doctoral thesis, Università degli Studi di Cagliari, 2014. http://hdl.handle.net/11584/266409.

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The Supramontes region and Gennargentu massif are two of the most interesting territories of Central Eastern Northern Sardinia. Riparian vegetation among mountainous waterways of these territories are mainly constituted by Alnus glutinosa with other associated taxa such as Taxus baccata, Ilex aquifolium and Rhamnus persicifolia. Rare and threatened Sardinian endemic species such as Ribes multiflorum subsp. sandalioticum, Aquilegia barbaricina, Rhamnus persicifolia and Paeonia corsica grow under and close to the canopy of such riparian woods. Temperature is considered one of the major envir

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VITTI, STEFANO. "Global changes in harsh environments: effects on plant species and communities from a trait-analysis perspective." Doctoral thesis, Università degli Studi di Trieste, 2021. http://hdl.handle.net/11368/2988907.

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This research thesis is an original contribution to the field of ecology and it is submitted as final outcome of my PhD project. It focused on linking plant responses to global climate changes to harsh environment conditions, which determine remarkable species responses, from cell to community level, by means of physiological and morphological plant responses. The aim of this PhD work was to investigate the effects of global changes, analysing the effects of changing climatic factors, to plant ecosystems achieving precise information to understand and better explain global changes in harsh env

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PICCIAU, ROSANGELA. "Seed dormancy and germination niches of Mediterranean species along an altitudinal gradient in Sardinia." Doctoral thesis, Università degli Studi di Cagliari, 2016. http://hdl.handle.net/11584/266731.

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The most crucial environmental factor for the failure of seedling emergence / establishment is temperature stress; consequently, seed germination should be triggered by favourable temperature conditions for the further development of the seedling. Therefore, temperature is the primary environmental factor regulating germination, and it is also considered responsible for changes in dormancy states of seeds. Seed dormancy has probably evolved differently across species, through adaptation to various habitats and prevailing environments. Under a Mediterranean climate, characterised by a consider

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PETRUZZELLIS, FRANCESCO. "Functional traits as a tool to predict invasive potential of alien species in native communities." Doctoral thesis, Università degli Studi di Trieste, 2019. http://hdl.handle.net/11368/2962384.

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Le specie aliene invasive (IAS) si stanno diffondendo a velocità sempre più elevata, con effetti molto negative a livello degli ecosistemi. Infatti, le IAS sono considerate una della maggiori cause della perdita di biodiversità e semplificazione degli habitat a livello globale. Di conseguenza, uno dei più grandi obiettivi in campo ecologico è quello di evidenziare le caratteristiche che ne favoriscono la diffusione. Quest’ ultime sono generalmente descritte dai ‘tratti funzionali’, definiti come caratteristiche morfologiche, fisiologiche o fenologiche, misurabili in un individuo dal livello ce

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BUFANO, Annarita. "Wild edible plants in Italy. A database and its applications in determining functional compounds in five Italian flora species." Doctoral thesis, Università degli studi del Molise, 2021. http://hdl.handle.net/11695/105999.

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La Flora alimurgica rappresenta, per l’Italia, una risorsa strategica alla quale è possibile associare numerosi valori positivi: ecologici, nutrizionali, socio-culturali, agroalimentari. Tuttavia, tale patrimonio “immateriale”, di inestimabile valore per l’Italia, è fortemente a rischio di scomparsa, sia per via degli stili di vita imposti dal progresso e dalla globalizzazione, che per la scarsa presenza di studi organici che quantifichino e documentino l’uso alimentare di queste specie. Le informazioni, infatti, talvolta corpose e ben strutturate, rimandano a territori ristretti che, al massi

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Koncienė, Jurgita. "Astro (Aster) genties įvairovė, paplitimas ir panaudojimas Šiaulių miesto gėlynuose." Bachelor's thesis, Lithuanian Academic Libraries Network (LABT), 2013. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2012~D_20130123_112355-55166.

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Astro (Aster L.) gentis priklauso astrinių (Asteraceae) šeimai. Astro gentyje yra 250–300 rūšių. Lietuvoje savaime auga 1 astro rūšis, plačiau auginamos 6–8 introdukuotos rūšys. Astro genčiai priklauso daugiamečiai šakniastiebiniai augalai, užaugantus 15–150 cm aukščio. Žiedai susitelkę graižais, tuščiaviduriai ir pilnaviduriai, įvairių spalvų. Graižai įvairaus dydžio, pavieniai arba susitelkę į sudėtinius žiedynus. Lapai pražanginiai, lygiakraščiai, dantyti arba rinčiuoti. Darbo tikslas – išanalizuoti astro (Aster) genties įvairovę Šiaulių miesto gėlynuose ir išnagrinėti jų panaudojim

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Elliott, Jennifer. "Studies on the preservation of flowers." Thesis, University of St Andrews, 2002. http://hdl.handle.net/10023/2693.

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A known method for the preservation of green foliage was adapted in order to preserve floral tissues, retaining the colour and texture, thereby providing a method suitable for the preservation of whole flowers. Initially, the effects of the existing foliage preservation process on floral tissues were studied and the resulting problems of limp sticky petals and colour loss were identified. Subsequently, with a knowledge of basic plant anatomy and of the properties of the main floral pigments, the anthocyanins, a series of experiments on petals and whole flowers were carried out in an attempt to

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LIMA, Gileno Vitor Mota. "Metabolismo antioxidativo e atividade biológica de látex de mangabeira (Hancornia speciosa Gomes)." Universidade Federal Rural de Pernambuco, 2014. http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/4952.

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Submitted by (edna.saturno@ufrpe.br) on 2016-07-05T13:26:20Z No. of bitstreams: 1 Gileno Vitor Mota Lima.pdf: 2181747 bytes, checksum: c8dd011d95738d15e850b0e9be7650fd (MD5)<br>Made available in DSpace on 2016-07-05T13:26:20Z (GMT). No. of bitstreams: 1 Gileno Vitor Mota Lima.pdf: 2181747 bytes, checksum: c8dd011d95738d15e850b0e9be7650fd (MD5) Previous issue date: 2014-02-27<br>Mangabeira (Hancornia speciosa Gomes) is a fruit tree found in various regions of Brazil. It features a large adaptive plasticity and is exposed to different environmental conditions that may confer abiotic stre

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SANTO, ANDREA. "Seed germination requirements and salt stress tolerance of coastal rare species in Sardinia." Doctoral thesis, Università degli Studi di Cagliari, 2013. http://hdl.handle.net/11584/266220.

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To survive to adverse factors that characterize coastal environments, plant species often require special physiological or metabolic adaptations to overcome environmental stresses. Stress may be physical (e.g. temperature) or chemical (e.g. salinity). Many communities comprise highly specialized species, which have comparatively restricted geographical distributions. The coastal species investigated in this Ph.D. program were chosen accordingly to their habitat: Phleum sardoum (Hackel) Hackel and Rouya polygama (Desf.) Coincy for sandy dunes; Brassica insularis Moris and Lavatera triloba L. s

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Michielon, Bruno. "Conservation of the endangered Myricaria germanica (L.) Desv.: a keystone species of riverine habitats." Doctoral thesis, Università degli studi di Padova, 2019. http://hdl.handle.net/11577/3424972.

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Myricaria germanica (L.) Desv. is a pioneer shrub linked to natural river dynamics. Despite its high conservation and indicator value, there is a lack of information on factors affecting its population density and viability, and its long-term dynamics. The long history of river alteration has created novel systems with unknown dynamics, so population-level studies are necessary to understand, manage and restore M. germanica, preventing the loss of biodiversity associated to this keystone species. The main process that affects its populations is habitat fragmentation, especially in human domina

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OLIVEIRA, Luciana dos Santos Dias de. "Sistemática do gênero Gymnanthes Sw. (Hippomaneae, Euphorbiaceae)." Universidade Federal Rural de Pernambuco, 2014. http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/4853.

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Submitted by (edna.saturno@ufrpe.br) on 2016-06-27T12:07:12Z No. of bitstreams: 1 Luciana dos Santos Dias de Oliveira (1).pdf: 3038580 bytes, checksum: da35bac4dbaffa7d8a84d659743e766d (MD5)<br>Made available in DSpace on 2016-06-27T12:07:12Z (GMT). No. of bitstreams: 1 Luciana dos Santos Dias de Oliveira (1).pdf: 3038580 bytes, checksum: da35bac4dbaffa7d8a84d659743e766d (MD5) Previous issue date: 2014-02-26<br>Conselho Nacional de Pesquisa e Desenvolvimento Científico e Tecnológico - CNPq<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES<br>Hippomaneae is one of t

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ANGELINI, ELIA. "Phytosociological, geosynphitosociological and habitat analysis of Mount Catria and Mount Strega Massif with cartographic analysis and evaluation of effects of forest management on vascular plant species composition of beech forest." Doctoral thesis, Università Politecnica delle Marche, 2012. http://hdl.handle.net/11566/242455.

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Scopo della ricerca è lo studio geobotanico della Zona di Protezione Speciale denominata “Monte Catria, Monte Acuto e Monte della Strega” situata nella parte settentrionale dell’Appennino Umbro-Marchigiano e ricadente per intero nelle Marche. Le indagini, svolte nell’ambito della Tesi di Dottorato, hanno più specificamente interessato lo studio della flora, della vegetazione e del paesaggio vegetale, nonché l’individuazione degli habitat, in base alla Direttiva 92/43/CEE, con produzione dei relativi documenti cartografici, alla scala 1:10.00, che da tali analisi è stato possibile derivare. L

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