930 research outputs found

    How chitons explain the world

    Get PDF

    An Initial Estimate of the Cost of Lost Climate Regulation Services Due to Changes in the Arctic Cryosphere

    Get PDF
    Outlines how arctic sea ice and snow cover help maintain the global climate and ecosystems, the impact of changes in sea and land reflectivity and methane emissions, research on the social cost of carbon, and the estimated economic cost of climate change

    Climigration? Population and climate change in Arctic Alaska

    Get PDF
    Residents of towns and villages in Arctic Alaska live on “the front line of climate change.” Some communities face immediate threats from erosion and flooding associated with thawing permafrost, increasing river flows, and reduced sea ice protection of shorelines. The term climigration, referring to migration caused by climate change, originally was coined for these places. Although initial applications emphasized the need for government relocation policies, it has elsewhere been applied more broadly to encompass unplanned migration as well. Some historical movements have been attributed to climate change, but closer study tends to find multiple causes, making it difficult to quantify the climate contribution. Clearer attribution might come from comparisons of migration rates among places that are similar in most respects, apart from known climatic impacts. We apply this approach using annual 1990–2014 time series on 43 Arctic Alaska towns and villages. Within-community time plots show no indication of enhanced out-migration from the most at-risk communities. More formally, there is no significant difference between net migration rates of at-risk and other places, testing several alternative classifications. Although climigration is not detectable to date, growing risks make either planned or unplanned movements unavoidable in the near future

    Staying in place during times of change in Arctic Alaska: The implications of attachment,alternatives, and buffering

    Get PDF
    The relationship between stability and change in social-ecological systems has received considerable attention in recent years, including the expectation that significant environmental changes will drive observable consequences for individuals, communities, and populations. Migration, as one example of response to adverse economic or environmental changes, has been observed in many places, including parts of the Far North. In Arctic Alaska, a relative lack of demographic or migratory response to rapid environmental and other changes has been observed. To understand why Arctic Alaska appears different, we draw on the literature on environmentally driven migration, focusing on three mechanisms that could account for the lack of response: attachment, the desire to remain in place, or the inability to relocate successfully; alternatives, ways to achieve similar outcomes through different means; and buffering, the reliance on subsidies or use of reserves to delay impacts. Each explanation has different implications for research and policy, indicating a need to further explore the relative contribution that each makes to a given situation in order to develop more effective responses locally and regionally. Given that the Arctic is on the front lines of climate change, these explanations are likely relevant to the ways changes play out in other parts of the world. Our review also underscores the importance of further attention to the details of social dynamics in climate change impacts and responses

    Arctic Standards: Recommendations on Oil Spill Prevention, Response, and Safety in the U.S. Arctic Ocean

    Get PDF
    Oil spilled in Arctic waters would be particularly difficult to remove. Current technology has not been proved to effectively clean up oil when mixed with ice or when trapped under ice. An oil spill would have a profoundly adverse impact on the rich and complex ecosystem found nowhere else in the United States. The Arctic Ocean is home to bowhead, beluga, and gray whales; walruses; polar bears; and other magnificent marine mammals, as well as millions of migratory birds. A healthy ocean is important for these species and integral to the continuation of hunting and fishing traditions practiced by Alaska Native communities for thousands of years.To aid the United States in its efforts to modernize Arctic technology and equipment standards, this report examines the fierce Arctic conditions in which offshore oil and gas operations could take place and then offers a summary of key recommendations for the Interior Department to consider as it develops world-class, Arctic-specific regulatory standards for these activities. Pew's recommendations call for improved technology,equipment, and procedural requirements that match the challenging conditions in the Arctic and for full public participation and transparency throughout the decision-making process. Pew is not opposed to offshore drilling, but a balance must be achieved between responsible energy development and protection of the environment.It is essential that appropriate standards be in place for safety and for oil spill prevention and response in this extreme, remote, and vulnerable ecosystem. This report recommends updating regulations to include Arctic specific requirements and codifying temporary guidance into regulation. The appendixes to this report provide substantially more detail on the report's recommendations, including technical background documentation and additional referenced materials. Please refer to the full set of appendixes for a complete set of recommendations. This report and its appendixes offer guidelines for responsible hydrocarbon development in the U.S. Arctic Ocean

    An Independent Review of USGS Circular 1370: An Evaluation of the Science Needs to Inform Decisions on Outer Continental Shelf Energy Development in the Chukchi and Beaufort Seas, Alaska

    Get PDF
    Reviews the U.S. Geological Survey's findings and recommendations on Alaska's Arctic Ocean, including geology, ecology and subsistence, effect of climate change on, and impact of oil spills. Makes recommendations for data management and other issues

    Observations on the Utility of the Semi-directive Interview for Documenting Traditional Ecological Knowledge

    Get PDF
    Traditional ecological knowledge (TEK) offers ecological information and insight relevant to ecological management and research that cannot be obtained from other sources. Its use is hindered by difficulties of access, in that TEK is typically not available to a wide audience. Documentation can overcome this obstacle, allowing TEK to be considered with other forms of easily disseminated information. This paper describes the author's experience using the semi-directive interview to document TEK about beluga whales in Alaska. This method allows the participants as well as the researcher to guide the interview, so that associations made by the participant, and not just those anticipated by the researcher, are discussed. Using maps as the starting point for discussions with individuals or groups, the interviews covered expected topics, such as migration and feeding behavior, as well as unanticipated topics, such as the possible influence of beavers on beluga distribution. The primary research session was followed a year later by a review session to verify the accuracy of the draft report, add missing information, or remove information the publication of which might harm community interests. The author found the semi-directive interview to be an effective and powerful method for accurate and comprehensive documentation of TEK. It worked especially well in group interviews, which allowed participants to stimulate and validate each other.Le savoir écologique traditionnel (SET) offre de l'information écologique et une opinion pertinente à la gestion et à la recherche écologiques qu'on ne peut obtenir d'autres sources. Un accès difficile gêne l'utilisation du SET, vu qu'en général il n'est pas disponible à un vaste public. On peut surmonter cet obstacle en créant de la documentation, ce qui permet de tenir compte du SET parallèlement à d'autres formes d'information facilement diffusée. Cet article décrit l'expérience de l'auteur qui s'est servi de l'interview semi-dirigée pour documenter le SET sur les bélougas de l'Alaska. Cette méthode permet aux participants autant qu'au chercheur de guider l'interview, de sorte que les associations faites par le participant, et pas uniquement celles anticipées par le chercheur, sont discutées. Des cartes servant à démarrer la discussion avec des individus ou des groupes, les interviews couvraient des sujets prévus comme la migration et le comportement alimentaire, en même temps que des sujets imprévus, comme l'influence possible des castors sur la distribution du bélouga. La recherche primaire était suivie un an plus tard d'une session de récapitulation afin de vérifier l'exactitude de l'ébauche du rapport et d'ajouter de l'information manquante, ou d'éliminer de l'information dont la publication aurait pu nuire aux intérêts de la collectivité. L'auteur a trouvé que l'interview semi-dirigée était une méthode efficace et puissante pour documenter le SET de façon précise et détaillée. Elle fonctionnait particulièrement bien dans les entrevues en groupes, qui offraient aux participants la possibilité d'échanges stimulants et de validation mutuelle
    corecore