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Water temperature in lakes and lagoons plays a key role in hydrology, water quality, and habitat suitability for aquatic organisms. The purpose of this project is to provide land and resource managers with information related to the past, present, and future temperature trends in lake surface waters in western Alaska. Through a combination of remote sensing, in situ data collection, model development, we will analyze similarities and differences related to spatial and temporal patterns of lake surface temperatures in western Alaska from 1985 to 2100. ​
Permafrost thaw can be a major driver of landscape change. Regions in Western Alaska are highly vulnerable to such thawing due to the high ice content of the soils and the lack of thermal monitoring in this region has limited our ability to understand current thermal state and establish thawing rates. This study established a permafrost monitoring network in this region, providing a baseline of permafrost thermal regimes for assessing future change at a total of 26 automated monitoring stations. Stations have collected year-round temperature data from the active layer and the permafrost starting from the summer of 2011. The strong correspondence between spatial variability in permafrost thermal regime and an existing...
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The Yukon-Kuskokwim Delta (YKD) encompasses the southernmost, warmest parts of the arctic tundra biome and is renowned for its high biological productivity and large subsistence-based human population. Ice-rich permafrost currently is widespread and strongly influences terrestrial and aquatic habitats, including local topography, vegetation, soil hydrology, and the water balance of lakes. Ground temperatures are near the freezing point, however, and recent projections indicate that the YKD is poised for widespread loss of permafrost by the end of this century. This has implications for the region’s extensive and heretofore stable terrestrial and aquatic habitats. Tundra wildfire is a common ecological “pulse” disturbance...
Categories: Data, Project; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: 2016, AK-00, Academics & scientific researchers, Academics & scientific researchers, Conservation NGOs, All tags...
We propose to develop a Yukon-Kuskokwim Berry Outlook: a data- and observer-driven ecological monitoring and modeling framework that forecasts changes in berry habitat and abundance with climate and environmental change. Berry-producing plants are extremely important to human and wildlife communities of the Yukon-Kuskokwim (Y-K) Delta. Berry yield can be influenced by snow cover, rainfall, soil moisture, air temperature, availability of insect pollinators, and seasonal weather extremes; and berry habitat can be altered by more frequent tidal inundation, increased frequency of storm surges, and permafrost deterioration, all of which may be significantly impacted by climate change. In a recent survey of Alaskan environmental...
Lack of complete snow cover for the past 3 winters in southwestern Alaska has forced agencies to postpone moose surveys due to the likelihood of underestimating the population/lack of comparability to previous surveys. Poor snow conditions lower the sightability of moose, yet, for most regions of Alaska, the variation in moose sightability during suboptimal conditions has not yet been quantified. Because scientists are predicting less snowfall in this region over the long term, we initiated research to estimate sightability correction factors (SCF_c) using radiocollared animals to apply to abundance estimates obtained via the GeoSpatial Population Estimator (GSPE) method. The Project Goal is to develop a model that...
Categories: Data, Project; Tags: 2016, Academics & scientific researchers, Academics & scientific researchers, CALIBRATION/VALIDATION, CALIBRATION/VALIDATION, All tags...
Water temperature is one of the most significant factors in the health of stream ecosystems. Temperature plays a critical role in salmonid reproduction and survivorship and is an essential indicator for monitoring the health of Bristol Bay salmon habitats, which support vital subsistence, commercial and sport fisheries. The objectives of this project are to develop an Implementation Strategy for a voluntary participation water temperature monitoring network for Bristol Bay; expand the annual Water Quality/QAPP Recertification training for local monitors to include standardized water temperature monitoring protocols; initiate temperature monitoring in select drainages; and seek long-term funding for a comprehensive...
Climate change is likely to alter snow patterns and characteristics, impacting vegetation, hydrology, permafrost condition, wildlife, and the Alaskans who depend on these resources. Currently, many areas of western Alaska are lacking important data related to snowpack and snow conditions, including the prime winter range for the Western Arctic Caribou Herd (WACH). This project will help monitor snow conditions, which are vital to understanding and predicting landscape level impacts of climate change in western Alaska.​
Streams, rivers, and lakes of the Kodiak Archipelago, Alaska, provide essential spawning and rearing habitat for millions of Pacific salmon collectively regarded as a foundation of the regional ecosystem and economy. Climate projections for the archipelago indicate probable increases in annual and seasonal air temperature over the next 85 years. Corresponding increases in the temperature of freshwaters also are expected, which may adversely influence the biology of salmon, the quality of salmon habitat, and the availability of salmon to support the ecosystem and economy. It is essential that salmon managers be provided with relevant and reliable information on expected changes in thermal regimes and their influence...
Water temperature influences all biological and physicochemical interactions within aquaticsystems. Water temperature monitoring is an essential part of lake management capable of providing early warning signs of climate change using straight-forward, low-cost techniques. Water temperature data acquired in this study will be used to support analyses of trend of the lacustrine component of sockeye salmon habitat. The need for such analyses is acute because climate change will influence lake habitat quality; growth and survival of juvenile sockeyesalmon; and subsistence, recreational, and commercial harvest opportunities. Additionally, data acquired in this project will be eventually combined with data collected by...
Baseline hydrologic and topographic data in relation to waterfowl productivity is very limited on the Y-K Delta. When considering the potential impacts of climate-driven change to nesting and brood-rearing habitats, these baseline data are important for making informed management decisions. This project takes advantage of a long-term field camp on Kigigak Island to expand instrumentation for monitoring pond water levels and salinities, and tidal dynamics. It will also support elevation surveys and the synthesis of environmental and biological datasets for inclusion in climate change models.
One of the major challenges in understanding changes in coastal processes in western Alaska is the lack of measured ocean data in the region. ​This project leverages existing human resources, and physical and computational infrastructure to collect and disseminate oceanographic observations in the Bering Sea. From instrument restoration, transport and deployment, through data streaming, recovery and dissemination, this project considers the end to end supports necessary to gather, promote, and serve oceanographic data along Alaska’s Western coast. Real‐time sea‐state conditions directly benefit emergency managers and local communities, particularly in dealing with small craft hazards and predicting storm surges...


    map background search result map search result map Ecosystem Dynamics and Fate of Warm Permafrost after Tundra Wildfire and Lake Drainage on the Yukon-Kuskokwim Delta Strategy development for establishment of a voluntary water temperature monitoring network in the Kodiak Archipelago, Alaska Develop a voluntary participation water temperature network implementation plan for the Ahklun Mountains and Bristol Bay Lowlands Direct snow condition monitoring at key ecological sites in remote western Alaska. Moored All-season Vertical Temperature Arrays in Lakes on Kodiak, Togiak and Alaska Peninsula/Becharof NWRs Moored All-season Vertical Temperature Arrays in Lakes on Kodiak, Togiak and Alaska Peninsula/Becharof NWRs Ecosystem Dynamics and Fate of Warm Permafrost after Tundra Wildfire and Lake Drainage on the Yukon-Kuskokwim Delta