Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 220 for “"Plant Community"”.
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On the assembly of a grassland plant community
… more species than are actually present in the community of the site. The science of community assembly attempts to understand how particular communities arise from the welter of possible species combinations. The assembly of a grassland plant community from the local species pool was examined …
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Grazing Management and Plant Community Composition on Bodmin Moor
… It also examines the spatial distribution of the plant communities in relation to environmental gradients and grazing management. Bodmin Moor was dominated by acid grassland and mire with some small heathland fragments. It lacked the cover of ericaceous dwarf-shrubs that define heathland in the …
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Plant Community Development of Isle Royale's Moose-Spruce Savannas
… Ordination techniques were used to describe plant communities and to identify environmental variables that influence vegetation development. Non-parametric multiplicative regression was used to predict how these variables influenced individual plants and structure within the communities. …
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Plant community assembly and biodiversity: a spatio-temporal perspective
… and temporal changes in different aspects of plant biodiversity and examine the driving forces that generate and maintain observed biodiversity patterns. Multiple facets of biodiversity (taxonomic, phylogenetic, functional) were characterized in semi-natural grasslands (in plots of 0.5 × 0.5 …
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Spatial point process modelling of a biodiverse plant community
… of spatial point processes for the modelling of plant communities with the aim of understanding the mechanisms that sustain biodiversity and allow species coexistence through an analysis of a biodiverse plant community in Western Australia.<br/><br/>Terrestrial plants are non-motile organisms and …
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Restoration Progress and Plant Community Development in Compensatory Mitigation Wetlands
… policy and an ecological perspective and linked plant community dynamics to broader ecological contexts. Stated goals for these wetlands largely focused on vegetation. Compliance with site-specific performance criteria varied depending on site goals; sites often failed to comply with criteria …
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Plant community restoration on mima mounds at Turnbull National Wildlife Refuge, WA
<p>"Prevention and management of exotic plant species invasion can diminish their negative ecological and economic impacts and maintain ecological functions provided by native species. This is particularly important in rare landscapes that provide essential habitat. The most successful management …
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Experimental warming of subarctic biocrust: Temporal responses of soil respiration and plant community
… on species composition changes of vascular plants in the warming experiment where warming was induced with open-top chambers (OTCs). Soil respiration, temperature, soil water content, as well as plant species composition changes were measured during three field trips that each lasted four …
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Responses of a Louisiana oligohaline marsh plant community to nutrient loading and disturbance
Aboveground plant community dynamics in the oligohaline marsh at Big Branch Marsh National Wildlife Refuge, Louisiana, USA, were assessed in response to nutrient loading (3 N x 3 P treatments) and disturbance (both planned lethal disturbance and stochastic tropical storm/hurricane disturbance). …
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Environmental, spatial and temporal drivers of plant community composition in British forest habitat
… functions and as a refuge for many rare plant species in human-modified landscapes. It is however, threatened by global change drivers such as deforestation and the associated fragmentation of remaining habitat areas, along with increased disturbance and exposure to nutrient inputs from …
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Plant Community Invasibility in Riparian Landscapes: Role of Disturbance, Geomorphology, and Life History Traits
… on the ecology of non-native, invasive riparian plants, river regulation, and the potential for restoration. For chapters one and two, I researched different aspects of the <italic>Tamarix</italic> invasion along the Colorado River through the Grand Canyon. Tree-ring analyses and surveys for …
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Factors affecting plant community composition and dynamics in the Ossipee Pine Barrens, New Hampshire
… Pine Barrens to identify and describe tree community types and investigate factors controlling forest composition and dynamics. Every site had three site-time assemblages (STA's) representing past, present, and future trees. Past (1952) vegetation was calculated based on reverse growth …
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Ecological legacies from grasslands to agroecosystems : microbial ecology, plant community assembly, and resource allocation
… and biological properties along with the plant community composition in response to land-use changes is poorly understood. These ecological variables are often compared to like compositions and ecological structures (i.e., agricultural soils to agricultural soils, forested soils to …
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Nutrient constraints on plant community production and organic matter accumulation of subtropical floating marshes
… subsidy and internal nutrient cycling controls plant productivity and organic matter accumulation. An interesting question is whether increased external nutrient loading can affect the basic processes that lead to peat formation—plant production and organic matter decomposition. I conducted …
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Fire Severity and Plant Community Dynamics in the Australian Alps, Southeastern New South Wales
The effects of fire on plant communities are a subset of a broader range of spatial and temporal influences on plant community dynamics. Widespread unplanned fires in the Australian Alps in 2003 provided a unique opportunity to investigate the response of vascular plant species to high severity …
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Fire Severity and Plant Community Dynamics in the Australian Alps, Southeastern New South Wales
The effects of fire on plant communities are a subset of a broader range of spatial and temporal influences on plant community dynamics. Widespread unplanned fires in the Australian Alps in 2003 provided a unique opportunity to investigate the response of vascular plant species to high severity …
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