Дисертації з теми "Plant communitie"
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Swedo, Barbara L. "Plant-microbe associations controls on soil bacterial community structure and consequences for aboveground plant communities /." [Bloomington, Ind.] : Indiana University, 2008. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3337259.
Повний текст джерелаTitle from PDF t.p. (viewed on Jul 28, 2009). Source: Dissertation Abstracts International, Volume: 69-12, Section: B, page: 7260. Adviser: Heather L. Reynolds.
Iglesias, Maria Claudia. "Spacial patterns of the genders in Dioecius plant species." Thesis, McGill University, 1986. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=65458.
Повний текст джерелаFoy, Elizabeth Christina. "Riparian vegetation and forest structure of two unregulated tributaries, compared to the regulated Snake River, Grand Teton NP, WY." Thesis, Montana State University, 2008. http://etd.lib.montana.edu/etd/2008/foy/FoyE1208.pdf.
Повний текст джерелаCarlyle, Cameron Norman. "Interacting effects of climate change and disturbance on grassland plants and plant communities." Thesis, University of British Columbia, 2012. http://hdl.handle.net/2429/42269.
Повний текст джерелаBinney, Elizabeth P. "Comparative analysis of community and population levels of organization in the rare grass, Achnatherum hendersonii." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp03/NQ27107.pdf.
Повний текст джерелаBoughton, Elizabeth Hermanson. "Understanding plant community composition in agricultural wetlands context dependent effects and plant interactions /." Orlando, Fla. : University of Central Florida, 2009. http://purl.fcla.edu/fcla/etd/CFE0002678.
Повний текст джерелаLaxton, Emma. "Relationship between leaf traits, insect communities and resource availability." Thesis, Electronic version, 2005. http://hdl.handle.net/1959.14/483.
Повний текст джерелаBibliography: p. 178-203.
Introduction -- Study sites -- Leaf characteristics and resource availability -- Insect herbivory and resource availability -- Insect communities and resource availability -- Influence of resource availability on recovery from herbivory -- Conclusions.
This project used the resource availability hypothesis (Coley et al., 1985) as a framework for investigating the relationship between resource availability (as defined by soil nutrients), leaf traits, insect herbivore damage and insect community structure. According to the hypothesis, plants from low resource environments should be better-defended, have longer leaf lifespans and slower growth rates than plants from higher resource environments. Higher resource plant species are expected to suffer higher levels of herbivory and recover faster from herbivory than low resource plant species (Coley et al. 1985). A corollary to this hypothesis is that plants from higher resource sites should support greater densities of insect herbivores than low resource species. Comparisons between high and low resource sites were made in terms of: (i) leaf traits of mature and immature leaves; (ii) phenology of leaf maturation; (iii) herbivore damage in the field and laboratory; (iv) diversity and abundance of herbivorous insect fauna; and (v) ability to recover from herbivory.
Mode of access: World Wide Web.
243 p. ill., maps
Palisaar, Jaan. "The floodplain meadows of Soomaa National Park, Estonia vegetation - dispersal - regeneration /." Connect to this title online, 2006. http://www.opus-bayern.de/uni-regensburg/volltexte/2006/705/.
Повний текст джерелаGosper, Carl R. "Consequences of weed invasion and control on plant-bird interactions and bird communities." Access electronically, 2004. http://www.library.uow.edu.au/adt-NWU/public/adt-NWU20050221.155953/index.html.
Повний текст джерелаZuefle, Marion E. "The impact of non-native woody plants on the native herbivorous insect community of northern Delaware." Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file, 75 p, 2006. http://proquest.umi.com/pqdweb?did=1163239621&sid=7&Fmt=2&clientId=8331&RQT=309&VName=PQD.
Повний текст джерелаPatrick, L. Brian. "Fertilization and plant litter effects on the plant and epigeal arthropod communities." [Kent, Ohio] : Kent State University, 2009. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=kent1259588844.
Повний текст джерелаTitle from PDF t.p. (viewed April 14, 2010). Advisor: Mark W. Kershner. Keywords: biodiversity; nitrogen; fertilization; plant litter; trophic dynamics; epigeal community. Includes bibliographical references.
Coulter, Celeste Tina. "Vegetation response to seasonality of prescribed fire and postfire seeding following mechanical fuel-reduction treatments in oak-chaparral communities of southwestern Oregon /." View full-text version online through Southern Oregon Digital Archives, 2008. http://soda.sou.edu/awdata/081119z1.pdf.
Повний текст джерелаIncludes bibliographical references (p.135-142 ). Also available via Internet as PDF file through Southern Oregon Digital Archives: http://soda.sou.edu. Search Bioregion Collection.
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.
Повний текст джерелаLeung, Pui-chi. "Exotic plant invasion of upland plant communities in Hong Kong, China." Click to view the E-thesis via HKUTO, 2005. http://sunzi.lib.hku.hk/hkuto/record/B36632442.
Повний текст джерелаBerglund, Linda. "Disturbance, nutrient availability and plant growth in phenol-rich plant communities /." Umeå : Dept. of Forest Vegetation Ecology, Swedish Univ. of Agricultural Sciences, 2004. http://epsilon.slu.se/s327.pdf.
Повний текст джерелаLeung, Pui-chi, and 梁佩芝. "Exotic plant invasion of upland plant communities in Hong Kong, China." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2005. http://hub.hku.hk/bib/B36632442.
Повний текст джерелаCameron, Duncan Drummond. "A role for differential host resistance to the hemiparasitic angiosperm, Rhinanthus minor L. in determining the structure of host plant communities?" Thesis, University of Aberdeen, 2004. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=238495.
Повний текст джерелаRosenfeld, Kristen Marie Wentworth Thomas R. Suiter Dale William. "Ecology of Bird Island, North Carolina an uninhabited, undeveloped barrier island /." Connect to this title online, 2004. http://www.lib.ncsu.edu/theses/available/etd-07122004-185722/.
Повний текст джерелаErickson, Heather E. "Nitrogen and phosphorus availability, ecosystem processes and plant community dynamics in boreal wetland meadows /." Thesis, Connect to this title online; UW restricted, 1994. http://hdl.handle.net/1773/5590.
Повний текст джерелаVannier, Nathan. "The clonal plant microbiota : assembly rules, heritability and influence on host phenotype." Thesis, Rennes 1, 2017. http://www.theses.fr/2017REN1B027/document.
Повний текст джерелаPlants live in association with a wide diversity of microorganisms forming the microbiota. The plant microbiota provides a variety of key functions that influence many aspects of plant's life comprising establishment, growth and reproduction. The present thesis aims at determining the assembly rules of the plant microbiota and its consequences for plant phenotype, adaptation and evolution. To fulfill this objective, we used different experimental approaches using either clonal plants as model organisms or grassland mesocosms for community-wide analyses. Our results demonstrated i) that Arbuscular Mycorrhizal Fungi induce important phenotypic variations in clonal plants traits involved in space exploration and resources exploitation. These changes depended on the identity of the symbionts and altered the plants ability to produce plastic responses to environmental heterogeneity. ii) Plants have evolved a mechanism allowing the transmission of a part of their microbiota to their progeny, ensuring thus their habitat quality. iii) The plant community context is a major factor structuring local plant microbiota assembly. Particular plant species identity in the neighborhood increase or decrease the microbiota diversity and ultimately determine the focal plant performance. This thesis overall demonstrates the importance of symbiotic microorganisms in the understanding of the plant adaptation and evolution. From the knowledges acquired we developed a novel understanding of symbiotic interactions in clonal plants by extending the holobiont theory to the meta-holobiont theory
Bush, Catherine Dana. "Native seed mixes for diverse plant communities." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ28920.pdf.
Повний текст джерелаCervantes, Peredo Luis Manuel. "Effects of Hemiptera on successional plant communities." Thesis, Imperial College London, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.362367.
Повний текст джерелаAllan, Caroline Elizabeth. "Nitrogen fixation in riverine wetland plant communities." Thesis, University of Glasgow, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.297033.
Повний текст джерелаSutton, Julian James. "On the dynamics of annual plant communities." Thesis, University of Liverpool, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.235530.
Повний текст джерелаShaw, Rosalind F. "Plant-herbivore interactions in montane willow communities." Thesis, University of Aberdeen, 2006. http://digitool.abdn.ac.uk/R?func=search-advanced-go&find_code1=WSN&request1=AAIU212664.
Повний текст джерелаVonlanthen, Corinne Maria. "Alpine plant communities : ecology and species richness /." [S.l.] : [s.n.], 2005. http://www.zb.unibe.ch/download/eldiss/05vonlanthen_c.pdf.
Повний текст джерелаSiegwarth, Mark. "Zen and the Art of Plant Communities." University of Arizona (Tucson, AZ), 2012. http://hdl.handle.net/10150/556788.
Повний текст джерелаMadgwick, Genevieve. "Long term changes in aquatic plant communities in English lowland lakes." Thesis, University of Stirling, 2009. http://hdl.handle.net/1893/2270.
Повний текст джерелаFinyom, Cyprien William Bopda. "Characterisation of the endophytic bacterial communities associated with South African sorghum plants: looking for potential plant growth-promoting endophytes." Thesis, University of Western Cape, 2012. http://hdl.handle.net/11394/3431.
Повний текст джерелаThe term endophyte is used to define all microorganisms that, during a part of their life cycle, colonize the internal tissues of a plant host. Many endophytes have been found to promote plant growth by acting either as biocontrol agents, biofertilizers or phytohormone producers. This study aimed to characterise the endophytic microbial community diversity associated with sorghum farmed in South Africa. Members of any common endophytic bacterial species identified during the study might in future studies be developed to improve sorghum production. Sorghum tissues (roots, shoots, stems) were sampled in three South African provinces (Free State, Limpopo and North West), each site being characterised by the use of different agricultural practices. Denaturing gradient gel electrophoresis (DGGE) and terminal restriction fragment length polymorphism (T-RFLP) analyses were used to characterise the endophytic bacterial communities. The analysis clearly demonstrated that the endophytic bacterial community structure in the three sorghum tissue types differed, suggesting that endophyte colonization is tissue-specific. The endophytic bacterial community structure is quite similar in each tissue when comparing the populations present in the sampling sites. In the sorghum endophytic microbial communities, common bacterial species were identified using molecular tools: The cyanobacterium Synechococcus and Staphylococcus saprophyticus were identified in the root samples. Pantoea sp., Erwinia sp., Enterobacter sp. and Klebsiella sp. were found in all shoot samples. Nocardia fluminea, Bacillus cereus and Microbacterium sp. were isolated as common shoot endophytic bacteria. This study defines, for the first time, the endophytic bacterial species associated with South African sorghum plants. These common endophytic bacterial species can be used to enhance the yield of sorghum crops.
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.
Повний текст джерелаL’ecologia del paesaggio studia l’influenza dei pattern spaziali sui flussi di specie. La continua frammentazione ed alterazione delle fitocenosi in paesaggi antropizzati rende necessario comprendere le dinamiche delle comunità vegetali che caratterizzano il paesaggio antropizzato, cercando di evitare il più possibile la perdita di diversità biologica che spesso è conseguenza di tali trasformazioni. La mia tesi è basata su tre articoli di ricerca riguardanti l’analisi della diversità della flora vascolare in fitocenosi secondarie e frammentate. In un lavoro di review invece, è stato analizzato l’effetto della riforestazione spontanea su fitocenosi secondarie a seguito dell’abbandono delle pratiche agricole. Ciascun lavoro è stato caratterizzato da specifici obiettivi, adattati in base alla variabilità del paesaggio e del tipo di fitocenosi secondaria indagata. Ciononostante, l’obiettivo comune di questa tesi è stato quello di esaminare l’influenza delle variabili di paesaggio e gestionali sulla variabilità della flora vascolare, tramite l’utilizzo di metodologie e strumenti propri dell’ecologia del paesaggio. Le analisi sono state effettuate in tre fitocenosi secondarie e frammentate, i.e. pascoli (Paper II), neoformazioni boschive (Paper III) e siepi rurali (Paper IV), inserite all’interno di differenti matrici paesaggistiche. Il terzo caso di studio (Paper III) è stato sviluppato in collaborazione con la Technische Universität di Berlino durante il mio periodo di dottorato all’estero. Le analisi sono state effettuate sia a livello di patch che di paesaggio, considerando quindi congiuntamente i rilievi floristici e le variabili gestionali (livello di patch) e l’analisi dell’assetto paesaggistico attorno alle fitocenosi indagate (livello di paesaggio). Le analisi di paesaggio sono state effettuate tramite strumenti GIS. Vari modelli di regressione sono stati utilizzati per mettere in relazione la diversità di specie vascolari con le variabili di paesaggio e gestionali. La sopravvivenza delle specie dipende profondamente dalle dinamiche del paesaggio e dalla sua configurazione spaziale (Paper I). Più nello specifico, nei casi di studio in cui le variabili stazionali e gestionali sono ininfluenti o omogenee in tutti i siti, la diversità di specie vascolari è profondamente influenzata dalle variabili spaziali (Paper II e III). Dove invece la gestione altera sostanzialmente l’equilibrio della fitocenosi, l’effetto è indipendente dalle variabili di paesaggio (Paper IV). In generale, i principi ed i metodi dell’ecologia del paesaggio che sono stati utilizzati nei casi di studio presentati, hanno permesso di quantificare precisamente i processi e le dinamiche che influenzano la diversità di specie vascolari a differnti scale spaziali e temporali.
Hunter, Dakota. "Invasive Species Research in Compensatory Wetland Mitigation: Investigating Plant Community Composition and Environmental Correlates with Three Invasive Plants." W&M ScholarWorks, 2019. https://scholarworks.wm.edu/etd/1563899036.
Повний текст джерелаMarteinsdóttir, Bryndís. "Plant community assembly in grazed grasslands." Doctoral thesis, Stockholms universitet, Institutionen för ekologi, miljö och botanik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-102185.
Повний текст джерелаAt the time of the doctoral defense, the following papers were unpublished and had a status as follows: Paper 3: Submitted. Paper 4: Submitted. Paper 5: Manuscript.
Thiet, Rachel Kay. "Soil microbial community pattern and process : impacts on vascular plant communities in three ecosystems of high conservation value /." The Ohio State University, 2002. http://rave.ohiolink.edu/etdc/view?acc_num=osu1486459267521939.
Повний текст джерелаRatcliffe, Sophia Emma Thirza. "Competition and coexistence in experimental annual plant communities." Thesis, Imperial College London, 1999. http://hdl.handle.net/10044/1/11515.
Повний текст джерелаGaudet, Connie Lee. "Competition in shoreline plant communities: A comparative approach." Thesis, University of Ottawa (Canada), 1993. http://hdl.handle.net/10393/6516.
Повний текст джерелаLee, Harold Thomas. "The effects of eutrophication on wetland plant communities." Thesis, University of Ottawa (Canada), 1993. http://hdl.handle.net/10393/6673.
Повний текст джерелаDeSandoli, Lisa Ann. "Restoration of plant communities to red-burned soils." Thesis, University of British Columbia, 2013. http://hdl.handle.net/2429/44301.
Повний текст джерелаNewton, Erika Lucie. "Plant-herbivore interactions in natural Brassica oleracea communities." Thesis, University of Exeter, 2009. http://hdl.handle.net/10036/72253.
Повний текст джерелаJohnston, Mark A. "Rabbit grazing and the dynamics of plant communities." Thesis, Imperial College London, 1992. http://hdl.handle.net/10044/1/11781.
Повний текст джерелаStonehouse, Amanda L. "The flora and plant communities of Botany Glen." Virtual Press, 2003. http://liblink.bsu.edu/uhtbin/catkey/1266033.
Повний текст джерелаDepartment of Biology
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.
Повний текст джерелаGauthier, Marie-Eve. "Restoring peatland plant communities on mineral well pads." Master's thesis, Université Laval, 2014. http://hdl.handle.net/20.500.11794/25320.
Повний текст джерелаPeatlands are largely represented in the boreal region of Alberta but little is known about their restoration on well sites. The goal of this study is to compare plant communities and substrates in order to recover peatland vegetation. Two field experiments tested which plant communities (bog, bog-aspen ecotone, willow-sedge fen, shrubby rich fen, treed rich fen) would best regenerate on different substrate (sawdust, clay loam, mix sawdust-clay, peat, surface roughness). We found that peatland communities can establish on mineral soil after propagules transfer using the moss layer transfer technique (MLTT). The choice of plant community, where the propagules are harvested is key to bryophytes establishment. Peat amendment facilitated the plants establishment. The MLTT is a promising approach to restore fen plants on well sites. We recommend a scale-up experiment for a whole well site to test the validity of MLTT within pad removal techniques.
Hansel, James R. "INFLUENCE OF URBANIZATION ON WOODY RIPARIAN PLANT COMMUNITIES." Miami University / OhioLINK, 2005. http://rave.ohiolink.edu/etdc/view?acc_num=miami1113852536.
Повний текст джерелаParker, John. "Plant-herbivore interactions consequences for the structure of freshwater communities and exotic plant invasions /." Available online, Georgia Institute of Technology, 2005, 2005. http://etd.gatech.edu/theses/available/etd-11182005-131013/.
Повний текст джерелаMark E. Hay, Committee Chair ; Julia Kubanek, Committee Member ; Joseph Montoya, Committee Member ; J. Todd Streelman, Committee Member ; David M. Lodge, Committee Member. Includes bibliographical references.
Parker, John D. "Plant-herbivore interactions : consequences for the structure of freshwater communities and exotic plant invasions." Diss., Georgia Institute of Technology, 2005. http://hdl.handle.net/1853/9460.
Повний текст джерелаCaraDonna, Paul James, and Paul James CaraDonna. "Temporal Ecology of a Subalpine Ecosystem: Plant Communities, Plant-Pollinator Interactions, and Climate Change." Diss., The University of Arizona, 2016. http://hdl.handle.net/10150/620860.
Повний текст джерелаPrins, Natalie. "The restoration of riparian plant communities following alien plant clearing in the Western Cape." Master's thesis, University of Cape Town, 2002. http://hdl.handle.net/11427/6164.
Повний текст джерелаFew of the riparian zones of the Western Cape Province, South Africa, can still be described as 'natural', as many, if not all, have been impacted upon in one way or another. They are, therefore, frequently disturbed environments that are highly susceptible to invasion by alien plants. the vegetation of riparian zones controls the flow of water, nutrients and sediments into streams. Plan communities in these habitats are often rish in species, and serve as corridor facilitating the movement of organisms.
Bennett, Lindsay. "Invasive plant removal strategies and native plant community recovery in Ontario, Canada." Thesis, Université d'Ottawa / University of Ottawa, 2020. http://hdl.handle.net/10393/41240.
Повний текст джерелаMorris, Michael Roger. "The contribution of spawning pacific-salmon to nitrogen fertility and vegetation nutrition during riparian primary succession on an expansive floodplain of a large river." Diss., [Missoula, Mont.] : The University of Montana, 2008. http://etd.lib.umt.edu/theses/available/etd-09302008-151352/.
Повний текст джерелаPotdar, Madhukar Vishwanathrao. "Interference in monocultures and mixtures of orchardgrass (Dactylis glomerata L.) and timothy (Phleum pratense L.)." Thesis, University of British Columbia, 1986. http://hdl.handle.net/2429/27510.
Повний текст джерелаLand and Food Systems, Faculty of
Graduate