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Summary: "I studied marten (Martes americana) abundance and ecology in the Yukon-Charley Rivers National Preserve during 1991-1993. Using a multiple sample, mark-recapture estimator, I estimated marten densities to be 0.69, 0.41, and 0.45 martens/km2 during each August for 1991-1993, respectively. Density estimates were derived with the boundary-strip method to address the edge effect inherent in live-trapping studies. During the study, marten density declined 43% between 1991 and 1992 and remained low during 1993. I hypothesize that a decline in primary prey (i.e., microtine rodents) and increased environmental stress (i.e., cold temperatures and snow cover) contributed significantly to the decline in marten abundance....
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The Lower Ship Creek Fishery in the city of Anchorage, Alaska is one of the state's most popular sport fisheries. After years of channelization and development, this social-ecological system (SES) continues to experience the effects of urbanization and is struggling to achieve robustness. I apply a robustness framework to the management of this fishery because of its semi-engineered nature. This framework uses interdisciplinary methods to study the interrelationships between its socio-economic and ecological components. Robustness is more appropriate than resilience as an analytical framework because of the relative insensitivity of the engineered components to ecological feedbacks. On Lower Ship Creek, the engineered...
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"A region of concern for persistent organic pollutants (POPs) contamination is the Arctic, because of POPs' ability to migrate long distances through the atmosphere toward cold regions, condense out of the atmosphere in those regions, deposit in sensitive arctic ecosystems and bioaccumulate in Arctic species. Thus, monitoring of POP concentrations in the Arctic is necessary. However, traditional active air monitoring techniques for POPs may not be feasible in the Arctic, because of logistics and cost. While these issues may be overcome using passive air sampling devices, questions arise about the interpretation of the contaminant concentrations detected using the passive air samplers. In this dissertation semi-permeable...
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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...
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In order to evaluate the impact of natural organic matter (NOM) on drinking water, the hydrology of the Caribou-Poker Creeks Research Watershed (CPCRW) was considered. The CPCRW provided an excellent opportunity to investigate contaminant transport as it relates to hydrology in a well studied, discontinuous permafrost environment. The seasonal variation of organic chemistry of three different water sources (i.e. ground water, artesian spring and stream) was studied during the course of the year 2001. This thesis comprises three chapters, each of which seeks to gain a better understanding of the contaminant transport pathways in a boreal watershed, Caribou Poker Creeks Research Watershed. The hypothesis of Chapter...
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Summary: "Puccinellia arctica is a species of arctic grass that is unpalatable to Canada geese, Branta canadensis, and may be an effective and non-lethal means of controlling the growing populations of urban Canada geese that are problematic in many areas of North America. The secondary metabolite profile of P. arctica was compared to the metabolite profiles of three palatable grass species to determine the plausibility that P. arctica is chemically defended. The volatile and non-volatile secondary metabolite profiles of both P. arctica and the palatable grasses were the same. No alkoloids were detected in any of the grasses. Condensed tannin levels were similar in all of the grasses. Gallotannin levels were higher...


map background search result map search result map Phytochemical comparison of Puccinellia arctica to Poa pratensis, Puccinellia langeana, and Puccinellia phryganodes for evidence of chemical defense Phytochemistry and chemosystematics of Artemisia arctica in Alaska Abundance and ecology of martens (Martes americana) in Interior Alaska An analysis of using semi-permeable membrane devices to assess persistent organic pollutants in ambient air of 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 Urban stream management: An interdisciplinary assessment of the Ship Creek fishery Predicting contaminant transport pathways in the Caribou-Poker Creek Research Watershed Urban stream management: An interdisciplinary assessment of the Ship Creek fishery Phytochemical comparison of Puccinellia arctica to Poa pratensis, Puccinellia langeana, and Puccinellia phryganodes for evidence of chemical defense Predicting contaminant transport pathways in the Caribou-Poker Creek Research Watershed Characteristics of the Sulukna River Spawning Population of Inconnu, Yukon River Drainage, Alaska Abundance and ecology of martens (Martes americana) in Interior Alaska Phytochemistry and chemosystematics of Artemisia arctica in Alaska "This is who I am": Perspectives on economics, policy, and personal identity and culture of Cook Inlet and Kenai River salmon fisheries An analysis of using semi-permeable membrane devices to assess persistent organic pollutants in ambient air of Alaska