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 41 for “"phylogenetic diversity"”.
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Taxonomic and Phylogenetic Diversity of Pitcher Plant Bogs in Georgia's Coastal Plain
<p>Diversity studies via floristic survey and taxonomic metrics have proven essential for discerning community composition and biodiversity, however, phylogenetic analyses are necessary to reveal underlying evolutionary change and potential community assembly patterns. Pitcher plant bogs are highly …
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Unravelling multidimensions of the flora of Kenya floristics, herbivory defences, and phylogenetic diversity
… including floristics, functional traits and phylogenetics, using a multidimensional approach, with a purpose to disentangle and explain drivers and patterns of the vegetation. The purpose of the study is achieved by focusing on the following four objectives: (1) assessing plant species …
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Patterns of Taxonomic, Functional, and Phylogenetic Diversity, and Ecological Drivers of Stream Fish Assemblages in East Texas
… in East Texas contain a rich freshwater biodiversity, with the Neches and Sabine River basins supporting some of the greatest freshwater fish diversity in the state. Given the heterogeneity of habitats and species diversity, these rivers serve as excellent natural systems for examining the …
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Microbial phylogenetic diversity preserved in facies-specific modern, recent, Holocene and Pleistocene hot-spring travertine deposits of Yellowstone and Turkey
A systematic evaluation has been undertaken of the mechanisms and products of microbial community preservation within modern-to-ancient terrestrial hot-spring calcium carbonate (CaCO3) limestone deposits called travertine. Microbial 16S rRNA gene sequences preserved within Modern travertine …
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Geomicrobiology of the ocean crust : the phylogenetic diversity, abundance, and distribution of microbial communities inhabiting basalt and implications for rock alteration processes
… of the ocean crust. Specifically, we examine the phylogenetic diversity of microorganisms inhabiting basaltic lavas, the activities and abundances of these microorganisms, the spatial extent of the biosphere, and the potential effect that microbial activity has on the geochemistry of the ocean …
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Geomicrobiology of the ocean crust : the phylogenetic diversity, abundance, and distribution of microbial communities inhabiting basalt and implications for rock alteration processes
… of the ocean crust. Specifically, we examine the phylogenetic diversity of microorganisms inhabiting basaltic lavas, the activities and abundances of these microorganisms, the spatial extent of the biosphere, and the potential effect that microbial activity has on the geochemistry of the ocean …
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The diversity of ground bryophyte communities along an altitudinal gradient on La Réunion island
Aim: To compare the α, β and phylogenetic diversity of the ground bryophyte communities along a tropical altitudinal gradient in order to determine which processes govern these assemblages. Location: La Réunion island (55°39'E; 21 °00'S), in the western Indian Ocean. Methods: The ground bryophyte …
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Effect of Population Sources and Species Pools on Community Phylogenetic and Functional Diversity During Restoration
<p>Phylogenetic and functional perspectives of community assembly can reveal new insights into how variation within dominant species interact with the local species pool to influence the structure of restored plant communities. Many studies have examined the effect of dominant species and species …
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Spatial and non-spatial patterns of genetic diversity in Neotropical bats
<p>Macroecological studies that predict genetic diversity and its correlation with other biodiversity dimensions are essential to conservation in a rapidly changing environment. However, in bats (order Chiroptera), studies associating abiotic or ecological traits that could help to predict genetic …
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Bats and the city : urban bat biodiversity in a tropical biome transition zone
… to wildlife. Our understanding of urban biodiversity patterns and their driving factors in tropical cities which interact with high levels of biodiversity is limited, yet it is pivotal to developing efficient and effective conservation guidelines for urban planning. This study uses a …
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Linking plant traits and herbivory in grassland biodiversity-ecosystem functioning research
… a call for advancing the multitrophic view of biodiversity- ecosystem functioning. Here I propose a trait-based framework to merge plant-herbivore interactions with biodiversity-ecosystem function relationships. This framework links plant growth and defense strategies, herbivore feeding …
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Elucidating cryptic diversity in East African frogs : the case of Arthroleptis francei Loveridge, 1953
Detailed information on the diversity of species and their distributions is crucial for the implementation of useful conservation measures. Here, I focus on the Afromontane region of Malawi and Mozambique, and use molecular techniques, environmental inferences and species delimitation methods to …
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Traits and Trees: Exploring the edges of phylogenetic methods
Phylogenetic methods are central to the study of biology and in recent years more formal techniques involving computational methods have been developed and widely applied. While these have focused on building the Tree of Life from molecular data, other approaches have extended to phenotypes, …
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Molecular characterization of Flavobacterium spp. isolated from Rainbow trout (Oncorhynchus mykiss) farmed in Southern Africa and development of a PCR-based tool for differentiating between isolates
… Furthermore, little information exists on the diversity of fish associated Flavobacterium spp. from southern Africa. Recently, numerous, yellow-pigmented, filamentous bacteria were isolated from diseased rainbow trout farmed in South Africa and neighboring Lesotho. The aim of the present study …
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Exploring the distribution and physiological roles of bacterial membrane lipids in the marine environment
… record extending back to the Archaean. Since the phylogenetic diversity of life is reflected in the structural diversity of biomolecules, lipid biomarkers that are shown to be diagnostic of certain organisms that carry out specific biochemical processes or that are demonstrated to have unique …
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Fylogenetická diverzita kultivovatelných prokaryot z hypersalinních prostředí.
Candidate: Dáša Straková Title of diploma thesis: Phylogenetic diversity of culturable prokaryotes from hypersaline environments. Charles University, Faculty of Pharmacy Department of Biological and Medical Sciences University of Sevilla, Faculty of Pharmacy Department of Microbiology and …
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Exploring the distribution and physiological roles of bacterial membrane lipids in the marine environment
… record extending back to the Archaean. Since the phylogenetic diversity of life is reflected in the structural diversity of biomolecules, lipid biomarkers that are shown to be diagnostic of certain organisms that carry out specific biochemical processes or that are demonstrated to have unique …
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Transcriptomics-Guided Biodiscovery of Peroxidases from Macroalgae
… production. Marine macroalgae, due to their phylogenetic diversity and ecological adaptations, represent a promising and largely untapped source of novel biocatalysts. The aim of this work was the transcriptomics-guided identification and characterization of novel enzymes, particularly …
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Management, microbiology, and machine learning: A systems approach to evaluating the nitrogen cycling microbiome in agricultural soils
… of conservation agriculture to the effects of phylogenetic diversity on bioinformatics clustering methods. I first demonstrate that the combination of heavy N fertilizer inputs and minimal soil disturbance in no-till agricultural systems generate unique pH dynamics that differentially influence …
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