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Dissertations / Theses on the topic 'Plant diversity'

Author: Grafiati

Published: 4 June 2021

Last updated: 26 July 2025

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1

Kirst, Matias. "TRANSCRIPTION REGULATION AND PLANT DIVERSITY." NCSU, 2004. http://www.lib.ncsu.edu/theses/available/etd-01042004-175350/.

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Transcript abundance measured for any gene on a microarray can be considered as a quantitative trait. If the transcription profile of a sufficient number of individuals from a segregating progeny is generated by microarrays, it allows mapping of genomic regions regulating variation in transcript abundance using traditional methods of QTL analysis. We generated transcript level profiles of wood forming tissue (differentiating xylem) collected from 91 individuals from a <I>E. grandis</I> x <I>E. globulus</I> F1 hybrid x <I>E. grandis</I> backcross population, using microarrays containing 2608 cD

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2

Parker, John Daniel. "Does Plant Diversity Control Animal Diversity?: An Experimental Approach." W&M ScholarWorks, 1998. https://scholarworks.wm.edu/etd/1539617738.

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3

Yesson, Christopher. "Investigating plant diversity in Mediterranean climates." Thesis, University of Reading, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.486349.

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The mediterranean-type climate zones, typified by hot-dry summers and coldwet winters, are remarkable for their botanical richness. These areas developed through parallel processes of aridification 15-10 million years ago and present a unique opportunity to study how plant groups have reacted to climate change. This thesis investigates the evolutionary impact of palaeoclimatic changes in these. winter-wet biomes, and asks whether similar patterns of diversity are repeated in each of these biomes. The following questions are critical to this study: Can the evolutionary impact of climate change

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4

Rumpunen, Kimmo. "Diversity in the plant genus chaenomeles /." Alnarp : Swedish Univ. of Agricultural Sciences (Sveriges lantbruksuniv.), 2001. http://epsilon.slu.se/avh/2001/91-576-5846-3.pdf.

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5

Baena, Susana. "Remotely sensed solutions for plant diversity conservation." Thesis, University of Nottingham, 2018. http://eprints.nottingham.ac.uk/51765/.

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Global change is happening at a staggering pace and the impact that change is having in the loss of plant biodiversity is unprecedented. The latest reports on the state of the world’s plants indicate that they face intensifying threats and biodiversity loss on a global scale. However, this rapid global change is also bringing extraordinary technological developments to all scientific fields. Earth Observation by Remote Sensing is undergoing a fast expansion and its capacity to monitor and analyse global environmental changes and their impact in biodiversity is ever growing. This research analy

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6

Pinto, Leonardo Henrique Teixeira. "Restoration of plant diversity and ecosystem functioning: effects of species richness, phylogenetic distance, functional diversity and invasive plants." PROGRAMA DE P?S-GRADUA??O EM ECOLOGIA, 2017. https://repositorio.ufrn.br/jspui/handle/123456789/23964.

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7

Otway, Stuart John. "Influences of grassland plant diversity and composition on invertebrate diversity and abundance." Thesis, Imperial College London, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.395643.

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8

May, Felix. "Spatial models of plant diversity and plant functional traits : towards a better understanding of plant community dynamics in fragmented landscapes." Phd thesis, Universität Potsdam, 2013. http://opus.kobv.de/ubp/volltexte/2013/6844/.

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The fragmentation of natural habitat caused by anthropogenic land use changes is one of the main drivers of the current rapid loss of biodiversity. In face of this threat, ecological research needs to provide predictions of communities' responses to fragmentation as a prerequisite for the effective mitigation of further biodiversity loss. However, predictions of communities' responses to fragmentation require a thorough understanding of ecological processes, such as species dispersal and persistence. Therefore, this thesis seeks an improved understanding of community dynamics in fragmented lan

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9

Yu, Ming-yee. "Enriching native floristic diversity in exotic tree plantation in Hong Kong." Click to view the E-thesis via HKUTO, 2007. http://sunzi.lib.hku.hk/HKUTO/record/B39558113.

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10

Orozco, Barbara Ayala. "Maintaining the drivers of tropical plant diversity : plant disease in conservation practice /." Diss., Digital Dissertations Database. Restricted to UC campuses, 2008. http://uclibs.org/PID/11984.

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11

Lee, Elsa. "Colonization of exotic plantations by native plants and mammals in Hong Kong." Click to view the E-thesis via HKUTO, 2004. http://sunzi.lib.hku.hk/hkuto/record/B31194783.

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12

Peyre, Gwendolyn. "Plant diversity and vegetation of the Andean Páramo." Doctoral thesis, Universitat de Barcelona, 2015. http://hdl.handle.net/10803/296441.

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The páramo is a high mountain ecosystem that includes the natural and semi-natural habitats located between the montane treeline and the permanent snowline in the humid Northern Andes. Given its recent origin and continental insularity among tropical lowlands, the páramo evolved as a biodiversity hotspot, with a vascular flora of more than 3400 species and high endemism. Moreover, the páramo provides many ecosystem services for human populations, essentially water supply and carbon storage. Anthropogenic activities, mostly agriculture and pasture practices, as well as climate change are major

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13

Busta, Lucas Howard. "The diversity and biosynthesis of plant cuticular waxes." Thesis, University of British Columbia, 2016. http://hdl.handle.net/2429/59017.

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Plants coat themselves in a cuticle to hinder transpiration across the vast surface areas they require for photosynthesis. The cuticle is made of cutin, a polyester, and cuticular waxes, aliphatic compounds that form the water barrier. Cuticles of model plants had been major targets for cuticular wax research, and knowledge of their surfaces is relatively advanced. However, this knowledge still does not answer crucial questions about relationships between wax structure and function. Limited studies of non-model species had provided glimpses of a much greater wax chemical structural diversit

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14

Nicholson, Wendy Elizabeth. "Increasing plant species diversity in contaminated upland grassland." Thesis, University of Newcastle Upon Tyne, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.275503.

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15

Jeffs, Christopher. "Natural enemies and the diversity of plant communities." Thesis, University of Oxford, 2016. https://ora.ox.ac.uk/objects/uuid:49c80db9-6590-4e06-b86f-24d225046969.

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The processes that determine the structure of plant communities are of considerable practical and theoretical interest. Natural enemies such as herbivores, seed predators and pathogens provide one potentially important influence on plant diversity. I investigated the effects of natural enemies on plant diversity in two contrasting, species-rich plant communities (tropical forests in Panama and temperate grasslands in the UK), focusing on pre-dispersal seed predation by insects, and the mortality of seeds and seedlings caused by soil fungi. In Panama I found that pre-dispersal insect seed preda

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16

Trentanovi, Giovanni. "Vascular plant species diversity in fragmented secondary plant communities: a landscape ecology approach." Doctoral thesis, Università degli studi di Padova, 2012. http://hdl.handle.net/11577/3421745.

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Landscape ecology has been defined in a variety of different ways, but the common theme is the study of the ecological effects of ecosystem spatial patterning. Since the long history of landscape alteration has created novel systems with unknown dynamics, new tools are necessary to understand, manage and restore human dominated landscapes, preventing the loss of biodiversity. Among all, habitat fragmentation is the main process which affects biodiversity especially in human dominated landscapes. This thesis is based on three research papers concerning the evaluation of plant species diversi

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17

Viketoft, Maria. "Soil nematode communities in grasslands : effects of plant species identity and diversity /." Uppsala : Dept. of Ecology, Swedish University of Agricultural Sciences, 2007. http://epsilon.slu.se/200748.pdf.

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18

Schnitzler, Franz-Rudolf. "Hymenopteran parasitoid diversity & tri-trophic interactions : the effects of habitat fragmentation in Wellington, New Zealand : a thesis submitted to the Victoria University of Wellington in fulfilment of the requirements for the degree of Doctor of Philosophy in Ecology and Biodiversity /." ResearchArchive@Victoria e-Thesis, 2008. http://hdl.handle.net/10063/536.

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19

LaJeunesse, Katherine J. "Covariation in plant abundance and diversity estimators in an old field herbaceous plant community." Miami University Honors Theses / OhioLINK, 2007. http://rave.ohiolink.edu/etdc/view?acc_num=muhonors1177560873.

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20

Loomis, Eli Stuart. "SEX AND DIVERSITY IN THE INVASIVE PLANT HIERACIUM AURANTIACUM." The University of Montana, 2007. http://etd.lib.umt.edu/theses/available/etd-05302007-121438/.

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Sexual reproduction is generally thought to provide long-term fitness advantages over asexual reproduction in the form of increased genetic diversity. Some work, however, suggests that asexual reproduction can also be advantageous. One situation when asexual reproduction provides an advantage is when colonizing a new range (Bakers law), as in plant invasions. This study investigated the population structure of the invasive plant Hieracium aurantiacum. H. aurantiacum is an apomict producing much of its seed asexually and has become a common invasive in North America and New Zealand. The genetic

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21

Seipel, Timothy Fridolin. "Plant Species Diversity in the Sagebrush Steppe of Montana." Thesis, Montana State University, 2006. http://etd.lib.montana.edu/etd/2006/seipel/SeipelT1206.pdf.

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Sagebrush (Artemisia tridentata) is abundant in Montana and is an obvious part of an assemblage of plant species.This community of plants; the sagebrush steppe contains a mixture of grasses, early and late season forbs and shrubs. It is found in semi-arid valleys and plains of Montana and the intermountain western United States, and has received much research attention regarding increasing livestock forage, or of wildlife's dependence on the sagebrush steppe plant communities.Yet, little information on plant species diversity exists. This thesis was undertaken to describe the plant species div

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22

Lindholm, Petra. "Cytotoxic Compounds of Plant Origin – Biological and Chemical Diversity." Doctoral thesis, Uppsala : Acta Universitatis Upsaliensis : Univ.-bibl. [distributör], 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-5728.

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23

Souza, Richards Rosineide. "Searching for plant viral diversity by using 454-pyrosequencing." Thesis, University of Nottingham, 2013. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.594740.

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Genetic variability in populations of RNA viruses are a very important trait, which can result on the emergence of new more powerful and destructive strains for many plant viruses, e.g. Potato virus Y. Genomic sequencing has been greatly improved due to the generation of new sequencing technologies, such as the 4S4-GS-FLX Titanium series. Different methods of viral RNA extraction and sample preparation were evaluated for their capacity to generate the whole genome of a plant virus. Partial virus purification as a method of viral RNA extraction combined with a double-stranded cDNA sample prepar

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24

Bullock, James Michael. "The maintenance of genotypic diversity in a clonal plant." Thesis, University of Liverpool, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.279711.

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25

Mazzochini, Guilherme Gerhardt. "Plant diversity influencing structure and functioning of Caatinga vegetation." Universidade Federal do Rio Grande do Norte, 2014. http://repositorio.ufrn.br/handle/123456789/20583.

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26

Wint, Ashley A. "Genetic Diversity in Native and Invasive Rubus (Rosaceae)." TopSCHOLAR®, 2008. http://digitalcommons.wku.edu/theses/17.

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Invasive species are an increasing threat to biological diversity as well as a leading cause of recent species’ extinctions. Invasives spread quickly and efficiently, and the U.S spends millions of dollars annually in the control and eradication of these species. More information is necessary in order to predict which species may become invasive. Rubus (Rosaceae) was chosen for study because this genus includes various ploidy levels, reproductive modes, and species that are invasive as well as native. Three Rubus species were chosen to represent apomictic and tetraploid invasives (Rubus armeni

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27

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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28

Al-Kaff, Nadia Saleh Ahmed. "Biological and molecular diversity of cauliflower mosaic virus." Thesis, University of East Anglia, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.240834.

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29

Plevniak, Keri. "Functional diversity and restoration of meadows in Northeast Ohio." Cleveland State University / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=csu1560958323467776.

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30

Knapp, Sonja. "Plant biodiversity in urbanized areas analyses of plant functional traits in space and time, plant rarity and phylogenetic diversity." Wiesbaden Vieweg + Teubner, 2009. http://d-nb.info/995192685/04.

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31

Navarro-Acevedo, Krystel A. "Oomycete Community Diversity and Pathogenicity Associated with Soybean in Ohio." The Ohio State University, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=osu157478435564676.

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32

Zhang, Jianhua. "Diversity of aster yellows phytoplasmas in lettuce." Columbus, Ohio : Ohio State University, 2003. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1054584888.

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33

Price, Charles Anthony. "Scaling the Diversity of Botanical Form and Function." Diss., The University of Arizona, 2006. http://hdl.handle.net/10150/194373.

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Recent theoretical and empirical advances, in particular the fractal branching model of West, Brown and Enquist (WBE model), have highlighted the importance of exchange surfaces in understanding the integration of whole plant form, and functional traits. Key insights have arisen from an increased understanding of how the properties of distributive vessel networks influence whole plant metabolic and physiological traits. Here I show that an extension of WBE model, one in which network geometry is continuously variable, provides a robust foundation to understand the diversity of scaling relation

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34

Hodge, Brian Allen. "Occurrence, Diversity, and Impact of Viruses in Ohio." The Ohio State University, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=osu1606307407425512.

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35

Johansson, Per. "Effects of habitat conditions and disturbance on lichen diversity : studies on lichen communities in nemoral, boreal and grassland ecosystems /." Uppsala : Dept. of Conservation Biology, Swedish University of Agricultural Sciences, 2006. http://epsilon.slu.se/200606.pdf.

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36

Estes, Becky Lynne Gjerstad Dean H. "Impact of interacting disturbances on longleaf pine communities." Auburn, Ala., 2006. http://repo.lib.auburn.edu/Send%206-15-07/ESTES_BECKY_24.pdf.

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37

Brummitt, Neil Alistair. "Patterns in the diversity and distribution of flowering plant genera." Thesis, University of Edinburgh, 2005. http://hdl.handle.net/1842/27446.

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Regional distributions of all vascular plant genera have been compiled from herbarium specimens at the Royal Botanic Gardens, Kew, and this data has then been analysed for large-scale patterns in the diversity and distribution of flowering plants, at both genus and family levels. A strong latitudinal gradient in diversity is apparent at family, genus and species levels, though while western South America is most diverse at species and genus levels, it is the SW. Pacific which is most diverse at family level. However, the number of families and genera per region is very strongly correlated, ir

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38

McCain, Kathryn Nicole Schmitt. "Limitations to plant diversity and productivity in restored tallgrass prairie." Diss., Manhattan, Kan. : Kansas State University, 2008. http://hdl.handle.net/2097/726.

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39

Bilton, Mark C. "Impacts of intraspecific genetic diversity on plant interactions and coexistence." Thesis, University of Sheffield, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.490330.

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40

Lang, Pauline. "Processes driving freshwater plant production and diversity in upland streams." Thesis, University of Glasgow, 2010. http://theses.gla.ac.uk/1864/.

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Upland headwater streams are important sources of freshwater in mountainous temperate to sub-arctic latitude European countries like Scotland. Yet much less is known about the ecology of small, characteristically oligotrophic, mountain streams supporting periphyton and aquatic bryophyte dominated vegetation, and their potential bioindicator capacity of environmental water quality, than lowland rivers impacted by anthropogenic disturbance, in this context. This scarcity of knowledge has significant implications for the success of the recently implemented Water Framework Directive (WFD: 2000/60/

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41

Kosaka, Yasuyuki. "Plant Diversity in Paddy Field Landscape in Savannakhet Province, Laos." 京都大学 (Kyoto University), 2006. http://hdl.handle.net/2433/68782.

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Kyoto University (京都大学)<br>0048<br>新制・課程博士<br>博士(地域研究)<br>甲第12433号<br>地博第32号<br>新制||地||11(附属図書館)<br>UT51-2006-J424<br>京都大学大学院アジア・アフリカ地域研究研究科東南アジア地域研究専攻<br>(主査)助教授竹田晋也, 教授田中耕司, 助教授岩田明久<br>学位規則第4条第1項該当

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42

Cantero, Juan José. "Plant community diversity and habitat relationships in central Argentina grasslands /." Tartu : Tartu University Press, 1999. http://bibpurl.oclc.org/web/19977.

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43

Van, der Vyver Marius Lodewyk. "Restoring the biodiversity of canopy species within degraded spekboom thicket." Thesis, Nelson Mandela Metropolitan University, 2011. http://hdl.handle.net/10948/1564.

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I investigated the return of plant canopy diversity to degraded spekboom thicket landscapes under restoration treatment. I attempted the reintroduction of five nursery propagated and naturally-occurring plant species in severely degraded Portulacaria afra Jacq. (spekboom) dominated thickets that have been subjected to a restoration method involving the planting of dense rows of P. afra truncheons for various time periods and also in degraded and intact thickets. I also planted nursery propagated P. afra cuttings. An average of 30 propagules of each species, were planted in each of the chosen a

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44

Noble, Sidney Lake. "The Influence of Canopy Cover and Canopy Heterogeneity on Plant Diversity within Oak Savannas." Miami University / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=miami1595843486558554.

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45

Solé-Senan, Xavier Oriol. "Plant diversity and ecosystem services in agricultural landscapes along different spatial scales." Doctoral thesis, Universitat de Lleida, 2017. http://hdl.handle.net/10803/406287.

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Aquesta tesi té com a objectiu escatir fins quin punt les diversitats d'espècies i funcional de les comunitats de flora arvense canvien a escala de camp i de paisatge. A escala de camp, l'estudi s'ha focalitzat en l'anàlisi de l'efecte de la intensificació agrícola, depenent de la posició dins del camp i en funció del nivell de pertorbació en cada hàbitat que forma part del tradicional paisatge en mosaic en els ambients mediterranis. A escala de paisatge, hem analitzat els canvis en la diversitat al llarg de gradients d'heterogeneïtat en el paisatge, tenint en compte d'una banda l'heterogeneï

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46

Males, Jamie Oliver. "Structure-function relationships in the water-use strategies and ecological diversity of the Bromeliaceae." Thesis, University of Cambridge, 2017. https://www.repository.cam.ac.uk/handle/1810/267920.

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The Bromeliaceae is one of the largest and most ecologically diverse angiosperm families in the Neotropics. In recent years, this family has begun to emerge as a model system for the study of plant evolutionary ecology and physiology, and major advances have been made in understanding the factors involved in episodes of rapid diversification and adaptive radiation in specific bromeliad lineages. However, despite a long tradition of ecophysiological research on the Bromeliaceae, an integrative, evolutionarily-contextualised synthesis of the links between anatomical) physiological, and ecologica

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47

Ma, Yuxin. "Les viromes associés aux plantes sauvages : vers des stratégies de caractérisation optimisées et variabilité dans divers environnements." Thesis, Bordeaux, 2019. http://www.theses.fr/2019BORD0134/document.

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Les approches de métagénomique basées sur l’utilisation des techniques de séquençage haut débit ont ouvert une nouvelle ère pour la découverte non biaisée et la caractérisation génomique des virus. Comme pour les autres virus, de telles études montrent que la diversité des virus phytopathogènes a jusqu’à tout récemment été fortement sous-estimée. Ces virus constituant une composante potentiellement importante des écosystèmes naturels ou des agrosystèmes anthropisés, il est important d’explorer la diversité des virus associés aux populations végétales et de comprendre les forces structurant cet

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48

Hulshof, Catherine Marie. "The Role of Plant Trait Variation in Community Assembly and Plant Diversity at Local to Continental Scales." Diss., The University of Arizona, 2012. http://hdl.handle.net/10150/265572.

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The trait based approach has been proposed as a way to reconcile community ecology. Despite recent advances in trait based ecology, such as the development of global trait databases and standardized methodology for trait collections, it remains unclear to what degree traits vary across individuals, species, and communities. In addition, the drivers of trait variation may shed light on the underlying processes that maintain species diversity and community assembly at local to continental scales yet these have been poorly studied. In this study, I examine both the magnitude of trait variation as

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49

Groskorth, Laura Christina. "Range condition and plant diversity within the mixed grassland of Saskatchewan." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/mq39142.pdf.

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50

Tapia, Grimaldo Julissa. "Aquatic plant diversity in hardwater streams across global and local scales." Thesis, University of Glasgow, 2013. http://theses.gla.ac.uk/4577/.

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The variety of life forms within a given species, ecosystem, biome or planet is known as biodiversity. Biodiversity can also be referred as species diversity and species richness. Understanding the drivers of biodiversity requires an understanding of intertwined biotic and abiotic factors, including climate patterns over the earth, primary productivity processes, e.g. photosynthetic pathways which change with climate and latitude; latitude, geology, soil science, ecology and behavioural science. Diversity of living organisms is not evenly distributed; instead it differs significantly across th

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