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General Circulation Models suggest a future climate of warmer and possibly drier summers in the boreal forest region, which could change fire regimes in high latitudes. Thunderstorm development is a dominant factor in the continental boreal forest fire regime, through its influence as a fire starting mechanism. Global Climate Change research has identified the land-atmosphere interface as a vital area of a needed research in order to improve our predictions of climate change. This dissertation has focused on the development of thunderstorms and lightning strike activity in a boreal forest region in Interior Alaska and on how the underlying surface can influence their development. I have examined the distributions...
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Using a mark-recapture design, an epidemiological investigation of Hepatitis B was performed on four colonies of Spermophylus parryi. Animals were trapped, marked and bled. Serum samples were screened for Hepatitis B markers. Program MARK was used to estimate survival rates. Prevalence rates ranged over 55% and 1999 rates were 10% higher than 1998. Vertical transmission of the virus was not observed and juveniles were unaffected by the mother's hepatitis status. Immigrants had lower prevalence rates than residents and incidence rates accelerated throughout the study. Survival was highest during the over-winter period and adult rates were lower in 1999. Recovered animals had different survival rates than other animals...
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Contents: Introduction -- The Northway Whitefish Project -- Theoretical approach -- Thesis structure -- Background and methods -- Gender, knowledge, and environmental change related to humpback whitefish (Coregonus pidschian) in Interior Alaska -- Time, expertise, and more time : four heuristics for developing trust between researchers and residents in participatory studies of subsistence resources -- Generating knowledge and questions about humpback whitefish (Coregonus pidschian) in Interior Alaska though connecting local and scientific experts -- Synthesis and discussion -- References -- Appendix 1. Northway guide to researchers -- Appendix 2. Interview guides used during this study -- Appendix 3. Release forms...
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Summary: "Artemisia L. (Asteraceae - Anthemideae) is a large and taxonomically complex genus occurring widely throughout the northern hemisphere. Chemical investigations in this genus have mainly been stimulated by the economic and/or medicinal importance of many of its members. This chemical knowledge has also provided useful criteria for resolving systematic uncertainties within the genus. Alaskan Artemisia species are little known chemically despite their historic and contemporary medicinal use. Therefore, an investigation of the chemistry of Alaskan Artemisia arctica was initiated with the dual purpose of searching for structurally novel and/or biologically active compounds and contributing additional criteria...
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Throughout this thesis, I use a multidisciplinary approach for understanding the sustainability of the culture, livelihoods, and ecosystems in the Cook Inlet and Kenai River salmon fisheries on Alaska's Kenai Peninsula. In Chapter 1, I present a broad overview of the Cook Inlet region, its inhabitants, and the various stakeholder and user groups that access regional salmon fisheries. Chapter 1 also provides an overview of the methodology utilized in this research, as well as discuss the methods, the strengths, and weaknesses of the research as part of an evaluation of the study. In Chapter 2, I present an overview of how the Kenai River and Cook Inlet salmon fisheries are managed and regulated, including regulatory...
map background search result map search result map Hepatitis B in Arctic ground squirrels (Spermophylus parryi): epidemiology and population biology Phytochemistry and chemosystematics of Artemisia arctica in Alaska Linking local knowledge and fisheries science : the case with humpback whitefish (Coregonus pidschian) in Interior Alaska Characteristics of the Sulukna River Spawning Population of Inconnu, Yukon River Drainage, Alaska "This is who I am": Perspectives on economics, policy, and personal identity and culture of Cook Inlet and Kenai River salmon fisheries Seasonal thermal habitat use and bathymetric distribution of burbot in Tanada and Copper lakes, Alaska Linking local knowledge and fisheries science : the case with humpback whitefish (Coregonus pidschian) in Interior Alaska Characteristics of the Sulukna River Spawning Population of Inconnu, Yukon River Drainage, Alaska Hepatitis B in Arctic ground squirrels (Spermophylus parryi): epidemiology and population biology Phytochemistry and chemosystematics of Artemisia arctica in Alaska Seasonal thermal habitat use and bathymetric distribution of burbot in Tanada and Copper lakes, Alaska "This is who I am": Perspectives on economics, policy, and personal identity and culture of Cook Inlet and Kenai River salmon fisheries