Log in

Relevant bibliographies by topics / Extinction of plants / Dissertations / Theses

To see the other types of publications on this topic, follow the link: Extinction of plants.

Dissertations / Theses on the topic 'Extinction of plants'

Author: Grafiati

Published: 5 June 2025

Last updated: 2 August 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 37 dissertations / theses for your research on the topic 'Extinction of plants.'

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

Hanrieder, Natalie [Verfasser], Robert [Akademischer Betreuer] Pitz-Paal, and Bernhard [Akademischer Betreuer] Mayer. "Determination of atmospheric extinction for solar tower plants / Natalie Hanrieder ; Robert Pitz-Paal, Bernhard Mayer." Aachen : Universitätsbibliothek der RWTH Aachen, 2016. http://d-nb.info/112604105X/34.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Sithavhakhomu, Thilivhali Simon. "Challenges facing local communities in utilising and sustaining indigenous medicinal plants in the Thengwe village of Limpopo Province." Thesis, University of Limpopo (Turfloop Campus), 2012. http://hdl.handle.net/10386/827.

Full text

Abstract:

Thesis (M.Dev.) --University of Limpopo, 2012<br>The main aim or purpose of this study was to look at the ways and the strategies of minimizing\ mitigating the over-harvesting of indigenous medicinal plants in order to use them sustainably. The task of identifying and assessing challenges facing local communities in utilizing and sustaining indigenous medicinal plants in Thengwe village and their implications on environmental conservation and management of natural resources was done during the pilot survey. The environmental field survey was conducted after gaining permission to enter into the

APA, Harvard, Vancouver, ISO, and other styles

3

Liebergesell, Mario, Björn Reu, Ulrike Stahl, et al. "Functional resilience against climate-driven extinctions." Universitätsbibliothek Leipzig, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-204141.

Full text

Abstract:

Future global change scenarios predict a dramatic loss of biodiversity for many regions in the world, potentially reducing the resistance and resilience of ecosystem functions. Once before, during Plio-Pleistocene glaciations, harsher climatic conditions in Europe as compared to North America led to a more depauperate tree flora. Here we hypothesize that this climate driven species loss has also reduced functional diversity in Europe as compared to North America. We used variation in 26 traits for 154 North American and 66 European tree species and grid-based co-occurrences derived from distri

APA, Harvard, Vancouver, ISO, and other styles

4

Figueiredo, Ludmilla [Verfasser], Ingolf [Gutachter] Steffan-Dewenter, and Cabral Juliano [Gutachter] Sarmento. "Extinction debt of plants, insects and biotic interactions: interactive effects of habitat fragmentation and climate change / Ludmilla Figueiredo ; Gutachter: Ingolf Steffan-Dewenter, Juliano Sarmento Cabral." Würzburg : Universität Würzburg, 2021. http://d-nb.info/1234912651/34.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Cavallari, Marcelo Mattos. "Estrutura genética de populações de Encholirium (Bromeliaceae) e implicações para sua conservação." Universidade de São Paulo, 2004. http://www.teses.usp.br/teses/disponiveis/11/11137/tde-24012005-085130/.

Full text

Abstract:

Encholirium é um gênero de Bromeliaceae de distribuição restrita ao território brasileiro, ocorrendo exclusivamente em afloramentos rochosos nos domínios do Cerrado, Caatinga e Floresta Atlântica, e com centro de diversidade na Cadeia do Espinhaço de Minas Gerais. Possui 23 espécies, das qua is 12 não estão protegidas por nenhuma Unidade de Conservação. O objetivo deste trabalho foi gerar informações úteis para a conservação de três espécies deste gênero, endêmicas da porção mineira da Cadeia do Espinhaço, através da análise da estrutura genética de suas populações. O conhecimento da di

APA, Harvard, Vancouver, ISO, and other styles

6

Lalechère, Etienne. "Apports des modèles de métapopulation hors équilibre : application à l'évaluation de la dynamique des plantes forestières." Thesis, Université Clermont Auvergne‎ (2017-2020), 2017. http://www.theses.fr/2017CLFAC057/document.

Full text

Abstract:

Les modèles de métapopulations permettent de prédire l'occupation des habitats au sein desquels elles évoluent en fonction de la configuration spatiale du paysage. La destruction et la création d'habitats peuvent induire une dette d'extinction ou un crédit d'immigration, c'est-à-dire des dynamiques d'espèces qui ne sont pas immédiates mais décalées dans le temps par rapport cette rotation des habitats. La présence d'un délai temporel signifie que les espèces ne sont pas à l'équilibre avec les paysages actuels. Cette thèse a pour objectif d'évaluer l'apport de modèles de métapopulations hors éq

APA, Harvard, Vancouver, ISO, and other styles

7

Albert, Sébastien. "Rupture des interactions mutualistes plantes à fruits charnus-vertébrés frugivores, et conséquences sur la régénération des forêts tropicales dans les Mascareignes." Thesis, La Réunion, 2020. http://www.theses.fr/2020LARE0035.

Full text

Abstract:

Les forêts tropicales sont largement dominées par les plantes à fruits charnus dont la dispersion est assurée par les vertébrés frugivores. L'effondrement global des grands vertébrés interroge donc quant à la résilience de ces écosystèmes, en particulier dans les îles qui concentrent l’essentiel des extinctions documentées. Les Mascareignes sont un remarquable système d'étude des ruptures d'interactions de frugivorie car la faune d'origine, pléthorique jusqu'à la colonisation humaine au 17ème siècle et aujourd'hui largement éteinte, est bien connue tout comme sa flore diversifiée qui compte pa

APA, Harvard, Vancouver, ISO, and other styles

8

Novi, Kristanti Alfinda. "Etude phytochimique de plantes menacées de disparition." Mulhouse, 1997. http://www.theses.fr/1997MULH0482.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Wiens, John J. "Climate-Related Local Extinctions Are Already Widespread among Plant and Animal Species." PUBLIC LIBRARY SCIENCE, 2016. http://hdl.handle.net/10150/622757.

Full text

Abstract:

Current climate change may be a major threat to global biodiversity, but the extent of species loss will depend on the details of how species respond to changing climates. For example, if most species can undergo rapid change in their climatic niches, then extinctions may be limited. Numerous studies have now documented shifts in the geographic ranges of species that were inferred to be related to climate change, especially shifts towards higher mean elevations and latitudes. Many of these studies contain valuable data on extinctions of local populations that have not yet been thoroughly explo

APA, Harvard, Vancouver, ISO, and other styles

10

Golding, Janice Sarah. "Herbarium-based Trait Studies on Plant Extinction Risk in the Flora Zambesiaca Region, South-Central Africa." Thesis, University of Oxford, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.517144.

Full text

APA, Harvard, Vancouver, ISO, and other styles

11

Delfour, Odile. "La conservation des espèces menacées d'extinction : étude de droit comparé : Espagne, Etats-Unis, France, Grande Bretagne, Suisse." Paris 1, 1998. http://www.theses.fr/1998PA010284.

Full text

Abstract:

La rarefaction progressive des espèces de faune et de flore a conduit le législateur, aussi bien en France qu'à l'étranger, à s'interroger sur les outils juridiques à même d'enrayer ce processus. Limitées à la seule réglementation du prélèvement et du commerce, les mesures de protection sont néanmoins vite apparues insuffisantes. C'est la raison pour laquelle cette vision analytique tend maintenant à laisser place à une approche plus synthétique qui tente d'appréhender l'ensemble des menaces auxquelles sont confrontées les espèces. De telles mesures, parce qu'elles sont parfois susceptibles d'

APA, Harvard, Vancouver, ISO, and other styles

12

Hewezi, Tarek. "Inhibition de l'expression génique chez le tournesol par induction d'une extinction systémique des gènes ou par la stratégie des ARN antisens." Toulouse, INPT, 2003. http://www.theses.fr/2003INPT004A.

Full text

Abstract:

Le tournesol demeure, à ce jour, une des plantes encore récalcitrantes à̧ la transformation génétique. Au cours de ce travail, diverses techniques ont été optimisées et une méthode originale de sélection d'embryons immatures sur kanamycine a été élaborée, permettant l'obtention de tournesols transgéniques même à partir de lignées récalcitrantes. Ces avancées techniques ont permis d'aborder l'étude de l'expression génique chez cette plante. Dans un premier temps nous avons analysé le phénomène de "silencing" sur la lignée R105 ayant intégrée la construction p35S GUS-Intron. [. . . ] Dans un deu

APA, Harvard, Vancouver, ISO, and other styles

13

Lauri, Pierre-Eric. "Architecture de l'arbre fruitier - de la morphologie des plantes à l'agronomie." Habilitation à diriger des recherches, Université Montpellier II - Sciences et Techniques du Languedoc, 2007. http://tel.archives-ouvertes.fr/tel-00377121.

Full text

Abstract:

Mon activité de recherche, appuyée par l'encadrement d'étudiants, s'est développée autour d'une thématique centrale, l'analyse architecturale de l'arbre fruitier. Mes travaux, sur pommier essentiellement, ont tout d'abord montré l'intérêt de l'architecture comme outil de caractérisation de la variabilité génétique existante (cultivars). J'ai mis en évidence que les différences variétales de comportement architectural et fruitier pouvaient être bien expliquées par deux caractères discriminants non analysés jusque-là : la mortalité physiologique des rameaux, appelé phénomène d' « extinction », e

APA, Harvard, Vancouver, ISO, and other styles

14

Granberg, Åsa. "Microbotryum violaceum on Silene dioica : understanding traits that influence plant-pathogen interactions." Doctoral thesis, Umeå universitet, Ekologi, miljö och geovetenskap, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-1387.

Full text

Abstract:

The dynamics of a plant-pathogen interaction vary both within and among species. Both spatial structuring and specific genetic and life-history characteristics will affect the interaction and the outcome of a potential co-evolution between the two organisms. In this thesis I have studied the interaction between the wild perennial herb Silene dioica and its automictic, obligate anther smut Microbotryum violaceum MvSd. From the plant perspective, I have examined different aspects of biochemical resistance in S. dioica to M. violaceum MvSd. From the pathogen perspective, I have focused on the bre

APA, Harvard, Vancouver, ISO, and other styles

15

Vidal, Mariana Morais. "Risco de extinção e a persistência de redes de interação entre plantas e frugívoros." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/41/41134/tde-15122014-113558/.

Full text

Abstract:

A dispersão de sementes por vertebrados é um processo ecológico muito importante para a manutenção da biodiversidade, especialmente nas regiões tropicais. Estas interações mutualistas podem ser rompidas devido à caça e a perda e fragmentação de habitats, na medida em que estas ameaças podem levar os parceiros mutualistas à extinção. No presente trabalho, buscamos entender as consequências de possíveis extinções de aves frugívoras sobre a organização de sistemas de dispersão de sementes na floresta Atlântica brasileira. Primeiro, nós caracterizamos o papel que cada uma das espécies desempenha e

APA, Harvard, Vancouver, ISO, and other styles

16

Dornier, Antoine. "Dynamique et évolution des métapopulations chez les plantes : l'exemple de Crepis sancta (Asteraceae) en milieu urbain." Montpellier 2, 2008. http://www.theses.fr/2008MON20104.

Full text

Abstract:

L'hétérogénéité du milieu conduit à une structuration spatiale des populations à une certaine échelle spatio-temporelle. Ces populations expérimentent des extinctions qui sont contrebalancées par des colonisations. Cette dynamique en métapopulation conditionne la viabilité d'une espèce et la distribution spatiale au sein d'un paysage. En outre, la structure en métapopulation induit des pressions de sélection spécifiques par comparaison à une grande population unique, notamment du fait du caractère transitoire des populations locales. Les petites populations transitoires de Crepis sancta (Aster

APA, Harvard, Vancouver, ISO, and other styles

17

Sennblad, Adina. "Effects of past fragmentation and habitat loss and current management methods on the changes in vascular plant communities. : An evaluation of extinction debt in semi-natural grasslands in Sweden." Thesis, Uppsala universitet, Institutionen för biologisk grundutbildning, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-447366.

Full text

Abstract:

Habitat loss and fragmentation are believed to be two of the main reasons for high extinction rates of species, resulting in decreased biodiversity. According to the island biogeography theory, the species richness in a patch, here a semi-natural grassland, is dependent on the landscape composition, and therefore changes in the landscape composition will result in changes in the species richness of the grassland. However, this change in species richness may be delayed for several years, causing an extinction debt. The aim of this study was to examine the change of species richness of vascular

APA, Harvard, Vancouver, ISO, and other styles

18

Guardiola, i. Bufí Moisès. "Efectes de la pèrdua i fragmentació de pastures mediterrànies sobre la riquesa, composició i relacions tròfiques de plantes i papallones." Doctoral thesis, Universitat Autònoma de Barcelona, 2015. http://hdl.handle.net/10803/300736.

Full text

Abstract:

La pèrdua i fragmentació dels hàbitats estan considerades com una de les causes més importants de pèrdua de biodiversitat a escala local, regional i global, causant la rarefacció i extinció d’algunes espècies. Bo i això, no es coneix bé l’abast real que provoca la pèrdua i fragmentació dels hàbitat ja que sovint es donen asincronies entre aquesta pèrdua i la consegüent extinció d’espècies, fet que comporta un deute d’extinció. Tot i que es considera que el deute d’extinció és un fenomen molt estès, el coneixement sobre els mecanismes i processos que el causen encara és molt incomplert, així co

APA, Harvard, Vancouver, ISO, and other styles

19

Kumarage, Lakmini Darshika. "The biogeographic affinities of the Sri Lankan flora." Thesis, University of Edinburgh, 2017. http://hdl.handle.net/1842/29550.

Full text

Abstract:

The island of Sri Lanka’s exceptional biodiversity and enigmatic biogeography begs investigation, as the island is key in understanding the evolution of the Asian tropical flora. Since the Jurassic, Sri Lanka has been subjected to remarkable tectonic changes, thus its flora could have been influenced by that of a number of nearby landmasses, as well giving Sri Lanka the potential to have played a wider role in the assemblage of floras elsewhere. Firstly, as Sri Lanka originated as a fragment of the supercontinent Gondwana, part of its flora may contain Gondwanan relict lineages. There is also

APA, Harvard, Vancouver, ISO, and other styles

20

Burst, Maxime. "Les communautés végétales des interfaces forêt-prairie et leur environnement face aux cas d'afforestation et de déforestation." Thesis, Université de Lorraine, 2017. http://www.theses.fr/2017LORR0078/document.

Full text

Abstract:

En Europe tempérée, les paysages sont dominés par une mosaïque de forêts, prairies et cultures depuis plusieurs siècles. Cette longue période de temps a permis la spécialisation d'espèces au sein des habitats et de leurs interfaces grâce à de forts contrastes environnementaux. Cependant, de fréquents changements d'occupation du sol ont eu lieu par le passé, lesquels se sont accélérés dans les dernières décennies, remettant en cause la stabilité des communautés végétales et de leur environnement. L'afforestation d'anciennes prairies et l'extension de prairies par déforestation, le plus souvent

APA, Harvard, Vancouver, ISO, and other styles

21

Chakwizira, Emmanuel. "Growth and development of 'Pasja' and kale crops grown with two methods and four rates of phosphorus (P) application : a thesis submitted in partial fulfilment of the requirements for the degree of Masters [i.e. Master] of Agricultural Science at Lincoln University /." Diss., Lincoln University, 2008. http://hdl.handle.net/10182/929.

Full text

Abstract:

*‘Pasja’ (Brassica campestris x napus) and kale (Brassica oleracea var. acephala L.) were grown at Lincoln, Canterbury, New Zealand in 2008 with different levels of phosphorus (P) fertiliser. Banded or broadcast P fertiliser was applied at 0, 20, 40 and 60 kg P/ha at establishment. Total dry matter (DM) production, the proportion of the leaf and stem and leaf area development were measured over time and related to the biophysical environment. For ‘Pasja’, final DM increased with P rate from 3730 kg DM/ha to ~4900 kg DM/ha at 60 kg P/ha. For kale the increase was from 8710 kg DM/ha for the cont

APA, Harvard, Vancouver, ISO, and other styles

22

Snäll, Tord. "Distribution Patterns and Metapopulation Dynamics of Epiphytic Mosses and Lichens." Doctoral thesis, Uppsala University, Department of Evolutionary Biology, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-3904.

Full text

Abstract:

<p>This thesis examines the relative importance of local conditions, dispersal and dynamics of the trees on epiphyte distribution patterns and colonization-extinction dynamics. Study species are the mosses <i>Orthotrichum speciosum </i>and <i>O. obtusifolium</i>, and the red-listed <i>Neckera pennata</i>. The thesis also includes an attempt to parameterize a model for a lichen metapopulation (<i>Lobaria pulmonaria</i>) in a dynamic landscape, based on only presence/absence data of the epiphyte and its host trees. </p><p>The results show that epiphyte colonization of trees is affected by both l

APA, Harvard, Vancouver, ISO, and other styles

23

Garcia, Karina Lucia. "Terra - Um planeta em mudança: da compreensão da tectônica de placas à procura de novas metodologias de divulgação científica." Doctoral thesis, Universidade de Évora, 2019. http://hdl.handle.net/10174/25600.

Full text

Abstract:

Compreender a Tectônica de Placas é fundamental para entender o funcionamento do nosso planeta, devido à sua ligação com processos cruciais, como a gênese dos recursos geológicos, a interação com os ciclos climáticos ou a própria evolução biológica bem como reconhecer as inovações científicas a respeito desta temática, o que é uma forma de preencher lacunas antes existentes a respeito da dinâmica da Terra e da Vida. Estas mais recentes discussões científicas em relação às atividades tectônicas dizem respeito às superplumas mantélicas e ao ciclo dos supercontinentes, que se relacionam de forma

APA, Harvard, Vancouver, ISO, and other styles

24

Pfeffer, Sébastien. "Identification et étude fonctionnelle de protéines virales impliquées dans la suppression de l'extinction post-transcriptionnelle de gènes ou PTGS." Phd thesis, Université Louis Pasteur - Strasbourg I, 2002. http://tel.archives-ouvertes.fr/tel-00007938.

Full text

Abstract:

L'extinction post-transcriptionnelle de gènes ou PTGS (Posttranscriptional Gene Silencing) est un phénomène hautement conservé à travers l'évolution. Retrouvé chez des organismes allant des champignons aux vertébrés, ce système reconnaît spécifiquement les molécules de RNA double brin (db) et les dégrade en fragments de 21-23 nt. Chez les plantes, le PTGS pourrait défendre l'organisme contre les infections virales. En réponse à ce mécanisme de défense, un certain nombre de virus codent pour des protéines capables de supprimer le PTGS. Ces protéines dites "suppresseurs" de PTGS, comme les proté

APA, Harvard, Vancouver, ISO, and other styles

25

Charlet, Emilie. "Mouillage et orientation d’un film mince de cristal liquide colonnaire : de la détermination des propriétés optiques aux applications photovoltaïques." Thesis, Bordeaux 1, 2008. http://www.theses.fr/2008BOR13653/document.

Full text

Abstract:

Cette thèse est consacrée à l’étude de films minces ouverts de cristaux liquides colonnaires sur un substrat solide. Ces matériaux, capables de s’auto-organiser en de larges domaines orientés, sont généralement obtenus à partir de molécules discotiques dérivées de colorants aromatiques. Ces différentes caractéristiques, associées à une bonne mobilité de charges, permettent d'envisager l'utilisation des cristaux liquides colonnaires en film mince dans des dispositifs photovoltaïques. Afin de bénéficier de leurs bonnes propriétés optoélectroniques, les cristaux liquides colonnaires doivent être

APA, Harvard, Vancouver, ISO, and other styles

26

Magoro, Madimetja David. "Traditional health practitioners' practices and the sustainability of extinction-prone traditional medicinal plants." Diss., 2008. http://hdl.handle.net/10500/2292.

Full text

Abstract:

For centuries Traditional Health Practitioners (THPs) used their indigenous knowledge (IK) in conserving medicinal plants and environments to maintain sustainability. With the rapid environmental, social, economic and political changes occurring in many areas inhabited by rural people exist the danger that the loss of biodiversity from habitat destruction and unsustainable harvesting practices will result in some species becoming extinct. The main aim of the study was to determine the natural habitat of extinction-prone traditional medicinal plants combining the insight of THPs with an ult

APA, Harvard, Vancouver, ISO, and other styles

27

Deane, David Charles. "Quantifying biodiversity patterns and extinction risk in seasonal wetland plant communities." Thesis, 2016. http://hdl.handle.net/2440/100216.

Full text

Abstract:

Wetlands are among the most threatened habitats on Earth. They are essential components of functional landscapes, providing habitat for native flora and fauna as well as supporting critical ecosystem services. Loss of wetland biodiversity threatens these values. There is an urgent need to understand patterns of wetland biodiversity, the processes creating these and the risk of species loss to plan effective intervention. Species-area relationships have a successful, although controversial, history of quantifying the risk of extinction in terrestrial biomes, and can provide rapid estimates of e

APA, Harvard, Vancouver, ISO, and other styles

28

Figueiredo, Ludmilla. "Extinction debt of plants, insects and biotic interactions: interactive effects of habitat fragmentation and climate change." Doctoral thesis, 2021. https://doi.org/10.25972/OPUS-23873.

Full text

Abstract:

The importance of understanding species extinctions and its consequences for ecosystems and human life has been getting increasing public attention. Nonetheless, regardless of how pressing the current biodiversity loss is, with rare exceptions, extinctions are actually not immediate. Rather, they happen many generations after the disturbance that caused them. This means that, at any point in time after a given disturbance, there is a number of extinctions that are expected to happen. This number is the extinction debt. As long as all the extinctions triggered by the disturbance have not happen

APA, Harvard, Vancouver, ISO, and other styles

29

Prebble, Matthew. "Islands, floras and history : an environmental history of plant introduction and extinction on the Austral Islands, French Polynesia." Phd thesis, 2006. http://hdl.handle.net/1885/109807.

Full text

Abstract:

Jared Diamond has recently suggested that the unique societal and floral attributes of Easter Island (Rapa Nui) and Tikopia may be a result of their geographical and historical isolation. In what Diamond proposes as the 'orthodox' understanding of these islands, I suggest that the discovery of material remains of the extinct Easter lsland palm cf Paschalococcus disperta and the introduced Tikopian tree crop Canarium harveyi can be seen to represent fundamentally different social strategies for alleviating problems of isolation. In developing a synthesis of evidence for plant introduction

APA, Harvard, Vancouver, ISO, and other styles

30

Maumela, Azwihangwisi Doris. "Impact of vegetation clearance on the hydrology of Luvuvhu River Basin in Soutpansberg area using Working for Water as a case study." Diss., 2010. http://hdl.handle.net/11602/1036.

Full text

APA, Harvard, Vancouver, ISO, and other styles

31

Jordan, GJ. "Macrofossil evidence for Quaternary plant extinction and vegetation change in western Tasmania." Thesis, 1993. https://eprints.utas.edu.au/11377/2/Jordan_Thesis.pdf.

Full text

Abstract:

Macrofossils from Pleistocene sediments in western Tasmania are investigated in order to reconstruct vegetation from this critical period. in the history of Australia's vegetation. The microfossil record shows that many taxa. notably the common Tertiary taxa Nothofagus subgenus Brassospora. Araucariaceae. Dacrycarpus and Dacrydium. were present in western Tasmania during the Latest Pliocene or Earliest Pleistocene but are now extinct from Tasmania. Most of these taxa are likely to have been rainforest species, but some may have been from sclerophyll vegetation (e.g. Beauprea). A few of these p

APA, Harvard, Vancouver, ISO, and other styles

32

Barnes, Richard Wayne. "Palaeobiogeography, extinctions and evolutionary trends in the Cunoniaceae : a synthesis of the fossil record." Thesis, 1999. https://eprints.utas.edu.au/19083/8/whole_BarnesRichardWayne1999_thesis_ex_pub_mat.pdf.

Full text

Abstract:

The fossil record of the flowering plant family Cunoniaceae is comprehensively examined and reviewed using detailed studies of the morphology of extant Cunoniaceae with new macrofossil species described from Australian Cainozoic sediments. Eleven of the 26 extant Cunoniaceae genera are represented in the macrofossil record and include leaves and leaf fragments, foliar cuticle and reproductive structures. These occur almost exclusively in Australian fossil deposits and range from Late Paleocene to Quaternary in age. Cunoniaceae fossil pollen is widely documented across the Southern Hemis

APA, Harvard, Vancouver, ISO, and other styles

33

Alofs, Karen Marie. "The effects of habitat loss and fragmentation caused by woody plant encroachment on native plant diversity and on an invasive grass." Thesis, 2010. http://hdl.handle.net/2152/ETD-UT-2010-05-1464.

Full text

Abstract:

Habitat loss, habitat fragmentation and species invasions have been recognized as three of the leading threats to biodiversity. I examined the effects of habitat loss and fragmentation on native and invasive plants in central Texas. During the last century, the density and abundance of woody plants has been increasing in the savannas of eastern Edwards Plateau. This process, known as woody plant encroachment, not only reduces the amount of open herbaceous habitat but also fragments that habitat creating smaller and more isolated patches. In three studies, I investigated the consequences of thi

APA, Harvard, Vancouver, ISO, and other styles

34

Ślązak, Błażej. "In vitro cultures of Viola uliginosa, a species threatened with extinction, for micropropagation and investigation of the influence of plant growth regulators on cyclotide expression." Praca doktorska, 2014. https://ruj.uj.edu.pl/xmlui/handle/item/61756.

Full text

APA, Harvard, Vancouver, ISO, and other styles

35

Nesteruk, Jurij. "Tendencje dynamiczne populacji wybranych gatunków, zagrożenia i problemy ochrony flory naczyniowej Czarnohory (ukraińskie Karpaty Wschodnie)." Phd diss., 2016. http://hdl.handle.net/11089/17105.

Full text

Abstract:

Spis publikacji stanowiących rozprawę doktorską: 1. Kobiv Y. & Nesteruk Y. 1996. Unique populations of CallianthemumcoriandrifoliumReichenb. (Ranunculaceae) in the Chornohora Ridge (Ukrainian Carpathians). Ukr. Botan. Journ. 53(3) 218-223 [in Ukrainian with an English summary] 2. Kobiv Y. &Nesteruk Y. 2001. Pedicularis oederi (Scrophulariaceae) in the Chornohora Mts (Ukrainian Carpathians): Distribution, Biology, Ecology and Threat. Polish Botanical Journal 46(2): 241-259 [lista B; 10 pkt.] 3. Nesteruk Y. 2004. Populations of Callianthemum coriandrifoliumReichenb.: [in]: Tsaryk J., Zh

APA, Harvard, Vancouver, ISO, and other styles

36

Seccombe, Erica. "Grow: Experiencing Nature in the Fifth Dimension." Phd thesis, 2016. http://hdl.handle.net/1885/118282.

Full text

Abstract:

Grow: Experiencing Nature in the Fifth Dimension, is an interdisciplinary practice-led research project traversing the realms of art, science and technology through the exploration of germinating seeds. Through my investigation of the aesthetic possibilities of the computational extension of vision with time-resolved (4D) micro-X-ray Computed Tomography, I have tested the potential for visualising virtual germinating seeds in an immersive stereoscopic installation. Using this technology I have set out to create a work of art where an audience can ex

APA, Harvard, Vancouver, ISO, and other styles

37

Krause, Benjamin. "Landscape change and impoverishment in North German grasslands since the 1950s." Doctoral thesis, 2013. http://hdl.handle.net/11858/00-1735-0000-0022-5F67-0.

Full text

Abstract:

Die Kulturlandschaft und ihre Bewirtschaftung haben sich seit dem Beginn der großräumigen Intensivierungsprozesse (z.B. Meliorationen, synthetischer Düngung und Herbizidgebrauch) in den 1950/60er Jahren in Mitteleuropa dramatisch geändert. Viele der ehemaligen artenreichen Grünlandflächen wurden in den letzten Jahrzehnten beseitigt (z.B. durch Umbruch zu Acker). Dies führte zu einem allgemeinen Grünlandrückgang in Deutschland. Heute werden die meisten Ackerflächen und die restlichen Grünlandflächen sehr intensiv bewirtschaftet. Die gegenläufige Entwicklung, die Umwandlung von Äckern zu Grünlan

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!