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 130 for “"Functional traits"”.
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Plant Functional Traits and Ecosystem Functions in Experimental Grassland Stands
… (01LC0014) investigations on implications of functional groups on ecosystem functions related to water- nutrient- and carbon cycle were carried out. Three experiments were conceived to test for implications of dominant species traits and phytodiversity on ecosystem functions. I Water, nutrient …
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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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Leaf Functional Traits as Predictors of Drought Tolerance in Urban Trees
… performance under water stress. Certain leaf functional traits can help horticulturalists more accurately predict water usage of urban trees. Comprehension through rigorous experimentation is lacking, partly due to the thousands of mostly exotic species. Previous studies suggest that species …
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High throughput phenotyping and quantitative genetics of leaf functional traits in C4 grasses
… use efficiencies. To meet these challenges, functional processes related to crop performance need to be better understood. Phenotyping complex traits such as water and nitrogen use efficiency in genetically diverse populations is currently a bottleneck in crop improvement because it is time …
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New approaches to understanding functional traits and butterfly responses to environmental changes in Europe
… focused on a limited subset of life-history traits, estimated mobility and biotope occupancy data, and not focused on functional traits related to resource use by all life-history stages, despite evidence that this may be a useful approach. The analyses presented here explore how well …
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It’s clam-plicated: how functional traits influenced extinction patterns of Neogene West Atlantic mollusks
… from that time. The present study correlated 16 functional traits, both continuous and categorical, with extinction risk in bivalves and gastropods from the Plio-Pleistocene WA. Traits considered were primarily related to metabolic requirements and predation resistance, both known factors in …
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Genetic Heterogeneity of Residual Variance for Production and Functional Traits in American Angus Cattle
… cattle are continuously selected for different traits and the success in improving these traits has been remarkable. However, for certain traits, it is essential not only to improve the average performance, but also to control the variation around the mean. There is evidence that residual …
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The direct implications of warming on the phenotype and underlying functional traits of marine phytoplankton
… may be altered. Focusing on patterns in species functional traits (FTs), this thesis applied trait-based approaches in laboratory and field studies to explore how biogeochemically-related FTs vary over environmental gradients. I quantified the thermal performance curves (TPCs) of FTs in …
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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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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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Plant communities in field margins of agricultural landscapes: species distributions, functional traits, and contributions to landscape function
… consequently will help us to understand the functional role of the field margins as an important component of the agro-ecosystem. Our first study investigates how the local-scale management and the landscape-scale land-use influence the composition of plant communities of agricultural field …
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Adaptive Silviculture in an urban floodplain forest: exploring functional traits and soil responses for climate ready forests
… activity and the transition treatment favoring traits typically associated with resource acquisition. Together, these results contribute mechanistic insight into tree performance and provide land managers with information to guide restoration efforts within MNRRA's floodplain forests …
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Spatial variation in functional traits and grazing value of savanna grasses at the community and species level
Compositional and functional plant community characteristics can strongly govern some ecosystem processes. These community characteristics, may, in turn, be related to multiple environmental variables, including edaphic, climatic, and topographic conditions. However, there is still an incomplete …
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Spatial models of plant diversity and plant functional traits : towards a better understanding of plant community dynamics in fragmented landscapes
… on the response of plant diversity and plant functional traits to variations in species' dispersal capability, habitat fragmentation and local environmental conditions. All questions were addressed using spatially explicit simulations or statistical models. In chapter 2, I addressed …
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