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 36 for “"Functional trait"”.
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Linking Plant and Soil Microbial Diversity via Plant Functional Trait Ecology
… highlights the need for a more mechanistic, trait-based understanding. This dissertation examines how various attributes of plant diversity influence microbial diversity, and if the patterns observed at species scale can be extended to mixed communities. Using a combination of monocultures …
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FOOD-WEB AND FUNCTIONAL TRAIT COMMUNITY STRUCTURE OF PREDATOR ASSEMBLAGES IN PINE FORESTS UNDER DIFFERENT MANAGEMENT REGIMES
… ecosystem services. Utilizing taxonomic, functional, and food-web approaches, I investigated the impacts of forest management practices in structuring predator communities in two pine forest systems of eastern Texas. The results of this study indicate that the increased frequency of forest …
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THE ECOLOGICAL IMPORTANCE AND EVOLUTIONARY POTENTIAL OF PHENOTYPIC PLASTICITY IN NOVEL ENVIRONMENTS
… variation in phenotypic plasticity in a functional trait, alcohol dehydrogenase, and its effect on larval survival of Drosophila melanogaster in a novel alcohol environment. After a population colonizes a novel environment, the population often adapts to this new environment, and …
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From Genes to Traits and Ecosystems: Evolutionary Ecology of <i>Sphagnum</i> (Peat Moss)
… of peat, or partially decayed biomass, and the functional traits underlying this extended phenotype. Interspecific functional trait variation is hypothesized to promote niche differentiation through the creation and maintenance of ecological gradients along which species sort within communities. …
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Ecosystem Functional Consequences Of Body Size Variation In An Apex Predator (Ambystoma jeffersonianum)
… level where each species is assigned a mean functional trait value. However, populations within a species, and individuals within a population, often exhibit considerable intraspecific functional variation. Therefore, instead of focusing on species’ mean trait values, we must incorporate …
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Evaluating Macrobenthic Indicators of Organic Enrichment and Hypoxia Within the Coastal Mississippi Hypoxic Zone
… for assessing the effects of eutrophication. Functional trait analysis should reflect the functional diversity of the community. Coastal Mississippi experienced widespread and sustained hypoxia throughout summer 2008. Site 6 located on the 10-m isobath in the center of the 2008 hypoxic zone …
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Functional traits and resource-use strategies of native and invasive plants in Eastern North American forests
… plants with this advantage. Here, I compared traits of native and invasive shrub and liana species in Eastern North American (ENA) forests to test the overarching hypothesis that non-native understory species invasive to this region have superior resource-use strategies, or alternatively, they …
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Synergies and Trade-offs in Urban Green Infrastructure
… loss, and public health challenges. Its multifunctionality and ability to deliver multiple Ecosystem Services (ESs) make UGI a "win-win" nature-based solution. Yet, focusing only on benefits risks overlooking Ecosystem Disservices (EDs) and the trade-offs from competing goals. This thesis …
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Synergies and Trade-offs in Urban Green Infrastructure
… loss, and public health challenges. Its multifunctionality and ability to deliver multiple Ecosystem Services (ESs) make UGI a "win-win" nature-based solution. Yet, focusing only on benefits risks overlooking Ecosystem Disservices (EDs) and the trade-offs from competing goals. This thesis …
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The Effects of Whole Genome Duplication on Functional Traits and Interactions With Arbuscular Mycorrhizal Fungi
… neopolyploidy affects plant ecophysiology, or functional trait variation across environments, we can understand the ecological contexts that can promote polyploid establishment. Thus, a major goal of this dissertation was to understand how neopolyploidy affects plant ecophysiology and …
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The Effects Of Whole Genome Duplication On Functional Traits And Interactions With Arbuscular Mycorrhizal Fungi
… neopolyploidy affects plant ecophysiology, or functional trait variation across environments, we can understand the ecological contexts that can promote polyploid establishment. Thus, a major goal of this dissertation was to understand how neopolyploidy affects plant ecophysiology and …
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The Residential Urban Forest: Linking structure, function and management
… storage. I use urban gradient analysis and plant functional trait classification systems to (1) characterize the forest structure on single-family residential lots in urban and suburban areas, (2) investigate factors associated with decisions to plant or remove trees and how these management …
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Local adaptation to climate change in a calcareous grassland system
… evidence of selection for different suites of functional traits in P. lanceolata populations exposed to chronic summer drought at BCCIL. Results suggest that avoidance strategies associated with high reproductive allocation were more common in populations exposed to long term experimental …
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Intraspecific trait variation and community assembly in old-field grasslands
<p>Trait-based approaches are increasingly used in plant community ecology, but previous research has largely ignored functional trait variation within species. Here I investigated the role of intraspecific trait variation in community assembly and responses to spatial and temporal environmental …
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Using Plant Functional Traits to Estimate Prairie Restoration Species Composition
… of plant species composition from species functional traits in different ages of prairie restorations. The inexpensive and diverse nature of Maxent makes it advantageous to restoration managers allowing them to manage expenditures in the field. Maxent determines if specific species trait …
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Functional diversity and mowing regime of flower strips as tools to support pollinators and to suppress weeds
… It is often suggested that increasing plant functional diversity could be a tool to optimize ecosystem functioning and ecosystem service delivery, and it could thus be a goal for the creation and management of flower strips. An example of ecosystem functioning studied in this manuscript, is …
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Genetic Parameter Estimates of Milkability Traits in South African Holstein Cattle
… drawn from a cow’s udder. It is an important functional trait with regard to milking costs as well as udder health. Milkability traits have not been included in the breeding objectives of South African dairy cattle and their genetic parameters in the population have not been estimated. The …
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Valuing the ecosystem services provided by UK bats under climate change
… By integrating species distribution modelling, functional trait analysis, molecular dietary data, trophic network reconstruction, and economic valuation, this thesis develops a cross-scale framework linking biodiversity change to ecosystem service delivery in agricultural landscapes. First, I …
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Carbon cycling in secondary tropical dry forest from species to global scales.
… level controls of aboveground biomass and plant functional trait distributions in secondary tropical dry forests of northwestern Costa Rica. I found that edaphic factors, and plant functional traits explain little additional variation in biomass after accounting for stand age but that the …
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