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 8 of 8 for “"ecological niche model"”.
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Seasonal and lunar patterns of peach blossom jellyfish (Craspedacusta sowerbii) in Michigan
… dispersal mechanisms and to create a regional ecological niche model. Medusae were observed in one lake during the field season, where abundance followed a significant quadratic seasonal curve peaking in mid-September, a thermal optimum near 25 ℃, and marginally nonsignificant increases during …
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Patterns of Taxonomic, Functional, and Phylogenetic Diversity, and Ecological Drivers of Stream Fish Assemblages in East Texas
… as excellent natural systems for examining the ecological processes shaping biodiversity patterns and species distributions. In 2023-2024, 60 streams in the Neches and Sabine River basins were surveyed across three seasons to investigate the patterns and ecological drivers of taxonomic (TDβ), …
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Historical refuges and recolonization routes in the Southern Appalachian Mountains, inferred through phylogeographic analysis of the spotted wintergreen (Chimaphila maculata)
… benefited from incorporation of coalescent modeling to test competing scenarios of population history of a species. Ecological niche modeling has also been useful in inferring areas of likely suitable habitat during past climate conditions. Several studies have examined the population …
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Investigating the distribution of Nitellopsis obtusa in Ontario Lakes and its role as an ecosystem engineer
… of bloom development, a structural equation model demonstrated that N. obtusa had a direct faciliatory (p-value < 0.05) role in Microcystis spp. blooms. In addition, N. obtusa biomass was a moderately strong negative predictor of near-bed oxygen concentration (R2 = 0.59, p-value < 0.001), …
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The Use of Geographic Information Systems and Ecological Niche Modeling to Map Transmission Risk for Visceral Leishmaniasis in Bahia, Brazil
… to develop and evaluate the applicability of ecological niche models (ENM) for leishmaniasis, to determine the influence of environmental and socioeconomic factors on the incidence of these diseases at three geographic scales: national, statewide and community. Water availability, garbage …
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Using eDNA and Habitat Suitability Modeling to Better Understand the Range and Habitat Requirements of the Eastern Black Rail
… Black Rail using environmental DNA (eDNA) and an ecological niche model identifying areas and characteristics of suitable habitat for this species. To detect Black Rail eDNA I developed a qPCR assay that targets a 219-bp region of the cytochrome c oxidase subunit 1 gene (COI) and uses a …
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Applying new aquatic habitat data to manage invasive and imperiled crayfishes in North America
… to better characterize freshwater habitat in modeling applications. My research applies these new freshwater GIS data layers to species distribution modeling (SDM) with implications for management of both imperiled and invasive freshwater crayfishes. In Chapter 2, I developed SDMs to …
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Geographic patterns of speciation in West and Central Africa: The role of rivers, mountains, and refugia
… population genomic, demographic and niche modeling analyses to gain a better understanding of the responses of West and Central African taxa to the major climatic and geographic events shaping African rainforest biota. Chapter 1 examines the role that the Pleistocene glaciation cycles …