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Climate-Induced Habitat Fragmentation Affects Metapopulation Structure Of Arctic Grayling In Tundra Streams, Heidi E. Golden
Climate-Induced Habitat Fragmentation Affects Metapopulation Structure Of Arctic Grayling In Tundra Streams, Heidi E. Golden
Doctoral Dissertations
Climate change is altering ecosystems across the globe, with ecological and evolutionary consequences affecting species persistence and biodiversity. I investigated the effects of changing hydrology on Arctic grayling (Thymallus arcticus) metapopulation structure, microgeographic differentiation, movement patterns and vital rates using neutral genetic microsatellite markers, remote sensing of PIT-tagged individuals, body condition and ovarian histology. Arctic grayling within the study area on Alaska’s North Slope comprised five distinct genetic clusters. River distance and dry zones were significant factors explaining genetic differentiation among locations. Migration was low and asymmetrical among genetic clusters, but higher from headwater populations to the large …
A Threatened Ecosystem In A Human-Dominated Landscape: Tidal Marsh Conservation In The Face Of Sea-Level Rise, Christopher R. Field
A Threatened Ecosystem In A Human-Dominated Landscape: Tidal Marsh Conservation In The Face Of Sea-Level Rise, Christopher R. Field
Doctoral Dissertations
Biological conservation is a crisis-driven discipline that is inextricably linked to its broader social, political, and economic context. Historically, conservation research has often been conducted within ecology disciplines and with limited links to this broader context, which has contributed to a gap between research and its real-world implementation. One impediment to creating stronger interdisciplinary links is that it requires the integration of many types of data from across a range of disciplines. Owing to the difficulty of such integration, questions related to the relative importance of different types of knowledge in conservation decision-making have remained largely unexplored. I collected data …