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 24 for “"plant functional traits"”.
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Using Plant Functional Traits to Estimate Prairie Restoration Species Composition
… of data that may facilitate the prediction 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 …
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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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Spatial models of plant diversity and plant functional traits : towards a better understanding of plant community dynamics in fragmented landscapes
… I identified key questions 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 …
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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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Fire-driven changes to tree drought vulnerability and carbon storage in temperate broadleaf forests
… I explore linkages between fire-driven shifts in plant functional traits and soil organic carbon stocks. To evaluate drought-fire interactions on juvenile trees, I experimentally imposed drought on existing and planted seedlings to compare the importance of post-fire resprouting from …
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Linking Plant and Soil Microbial Diversity via Plant Functional Trait Ecology
Plant–microbe interactions are central to ecosystem functioning, yet our understanding of how plant diversity relates to soil microbial diversity remains rudimentary. Cover crops are increasingly promoted for their potential to enhance soil health and microbial diversity in agroecosystems, but …
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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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Plant traits and drought tolerance in the savanna : a Kruger National Park case study
One of the central goals of plant ecology is to understand the factors that control the local distribution of plant species and thus the composition of communities. The aim of this study is to determine plant functional traits that can be associated with drought tolerance/avoidance and to test …
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Discerning Differences in the Plant Traits of the Floral Communities of Mt. Washington, NH, by Incorporating Intraspecific Variability Analysis
Plant functional traits allow ecologists to assess the ways floral communities respond to abiotic and biotic factors. By analyzing these traits, we can then ultimately assume the factors that control species distribution and community composition. Here, I analyzed plant traits (plant height, leaf …
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Forest and woodland regeneration dynamics and persistence in the human- modified landscape of Greater Gombe Ecosystem, Tanzania
… anthropogenic factors (e.g., wildfire), and plant functional traits (e.g., dispersal mode) on the variation of forest structure in these reserves. To provide insights on these issues, I used various data sources to assess forest cover changes, factors affecting those changes, and patterns of …
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Examining patterns of coexistence in the Cape genus Tetraria (Cyperaceae) from a phylogenetic perspective : tracing the history of community assembly processes
… studies, ecological distances based on plant functional traits, and phylogenetic distances based on a molecular phylogeny of the species in question. Species coexisting in plots are significantly less related than expected on the basis of chance, and plots of phylogenetic distance …
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Combining remotely sensed estimates of structure and function to improve quantification of forest productivity
… events significantly impact forest health and functionality. Remote sensing is useful for monitoring global ecosystems and estimating forest vitality. High-resolution images and lidar (Light Detection and Ranging) data offer enhanced insights into forest light utilization. Combining lidar with …
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COMPARATIVE ECOPHYSIOLOGY OF NATIVE AND INVASIVE PLANTS ACROSS POPULATIONS, SPECIES, AND CONTINENTS
… the theory that invasive species possess key traits which make them successful invaders. Specifically, I investigated the hypotheses that 1) plasticity increases invasive species’ success compared to native species, 2) invaders evolve rapidly in their new ranges, 3) invasive species avoid …
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Using Leaf Spectra to Elucidate the Taxonomy and Ecology of Living and Dried Plants
<p>Identifying plants and understanding of changes in plant communities are crucial to the conservation and management of nature. The shortwave spectral reflectance of leaves is a promising tool for rapidly identifying species at different taxonomic ranks and predicting important plant functional …
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Plant communities in field margins of agricultural landscapes: species distributions, functional traits, and contributions to landscape function
… our understanding of the processes governing plant community structure and resulting functioning in agricultural field margins by focusing on describing naturally occurring plant communities of the field margins in the agricultural landscape of Haean-myun catchment in South Korea and how it …
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A Tale of Three Resources: The Influence of Multiple Resources on Plant-Herbivore Interactions
<p>Although studies indicate that plant growth can be co-limited by multiple resources, particularly water, nitrogen (N), and phosphorus (P), the role of co-limiting resources in driving plant-herbivore interactions remains poorly understood. Evidence indicates that the resources that limit plant …
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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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Functional traits of salt marsh plants : responses of morphology- and elemental-based traits to environmental contraints, trait-trait relationships and effects on ecosystem properties
In der vorliegenden Arbeit wurden Merkmalsausprägungen von Pflanzen als Antwort auf Umwelteinflüsse untersucht und die Anwendbarkeit dieser auf Merkmals-Umwelt Konzepte überprüft. Wechselwirkungen zwischen Merkmalen und Effekte von Merkmalen auf Ökosystemfunktionen wurden analysiert. Die Arbeit …
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Leaf Volatile Emissions Structure Tree Community Assembly and Mediate Climate Feedbacks in Tropical Forests
… priority. The emission of isoprene gas from plant leaves has been demonstrated to enhance leaf tolerance to high temperatures and drought. Isoprene is a volatile secondary metabolite produced in the chloroplast by approximately one-third of plant species. While the benefits of isoprene are …
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