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Full-Text Articles in Life Sciences

Understanding The Impacts Of Current And Future Environmental Variation On Central African Amphibian Biodiversity, Courtney A. Miller Dec 2018

Understanding The Impacts Of Current And Future Environmental Variation On Central African Amphibian Biodiversity, Courtney A. Miller

University of New Orleans Theses and Dissertations

Global climate change is projected to impact multiple levels of biodiversity by imposing strong selection pressures on existing populations, triggering shifts in species distributions, and reorganizing entire communities. The Lower Guineo-Congolian region in central Africa, a reservoir for amphibian diversity, is predicted to be severely affected by future climate change through rising temperatures and greater variability in rainfall. Geospatial modelling can be used to assess how environmental variation shapes patterns of biological variation – from the genomic to the community level – and use these associations to predict patterns of biological change across space and time. The overall goal of …


Population Genetics And Bumble Bee Conservation: Saving Species By Thinking Small, Cady Greenslit May 2018

Population Genetics And Bumble Bee Conservation: Saving Species By Thinking Small, Cady Greenslit

Lawrence University Honors Projects

Pollinators have experienced a severe decline over the last few decades, and this includes bumble bee populations (g. Bombus). Bumble bees are important native pollinators, and here I investigate the health of local populations with molecular tools. The field of conservation genetics has created useful methodology for investigating the health and informing management strategies of threatened populations. This work investigates and describes the applications of population genetics, which uses span across the board. These applications are then brought back into the context of bumble bee conservation, and how they fit into the experimental plan I originally designed. I designed …


Evidence For The Genetic Basis And Inheritance Of Ocean And River-Maturing Ecotypes Of Pacific Lamprey (Entosphenus Tridentatus) In The Klamath River, California, Keith A. Parker Jan 2018

Evidence For The Genetic Basis And Inheritance Of Ocean And River-Maturing Ecotypes Of Pacific Lamprey (Entosphenus Tridentatus) In The Klamath River, California, Keith A. Parker

Cal Poly Humboldt theses and projects

Surveys of genetic variation have improved our understanding of the relationship between fitness-related phenotypes and their underlying genetic basis. However, how this information can be used to inform conservation has been unclear in many cases. The objective of this study was to combine next-generation genetic sequencing with traditional ecological knowledge to evaluate imperiled anadromous Pacific lamprey (Entosphenus tridentatus) and apply the findings to conservation in the context of resolving Native American traditional food security issues. In the Klamath River of California, a previously identified Pacific lamprey ocean-maturing ecotype was distinguished by a relatively advanced maturity of female fish …