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Folders: ROOT > ScienceBase Catalog > National and Regional Climate Adaptation Science Centers > Alaska CASC > FY 2022 Projects ( Show direct descendants )

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Water temperature plays a large role in freshwater ecosystems in the Arctic and sub-Arctic. It affects the physical and biological features of rivers, like how the water interacts with the landscape and the life cycles of organisms that live in the river. For example, unseasonably warm water temperatures in Alaska’s large rivers in 2019 caused large numbers of salmon to die before they could reach their spawning grounds. Though water temperature data is important for natural resources monitoring programs, these data are historically lacking and hard to collect for large river systems. Satellites and other remote sensing techniques can offer valuable insight to Alaskan stream conditions. They can measure thermal...
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High latitude northern ecosystems are currently warming twice as fast as the global average. Over the last several decades, this has caused dramatic losses of frozen area in the Arctic and sub-Arctic. However, it is unclear how melting coastal mountain glaciers, thawing permafrost, and declines in snowpack will affect the quality of freshwater habitat for culturally and economically important salmon in Alaska. As a collaborative effort with the Alaska Department of Fish and Game, the Alaska Department of Natural Resources, and the U.S. Fish and Wildlife Service, this project aims to answer three questions: How does melting affect the freshwater habitat of Pacific salmon? How will changes to aquatic flows...
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Coastal flooding and erosion caused by storms and sea-level rise threaten infrastructure and public safety in Alaska Native communities. Though the problem is well known, there are few tools that can assess local vulnerability to coastal flood hazards. Even fewer tools can be customized with specific community information to support local adaptation planning. The main goal of this project is to use the Coastal Storm Modeling System (CoSMoS) platform to co-produce customized local flood hazard maps and online tools to support the development of culturally-appropriate and cost-efficient adaptation strategies in Alaska. The project team will work with federal, state, and local community representatives to understand...
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Water temperatures affect the distribution, growth potential, and productivity of stream fishes that are targeted in subsistence, sport, and commercial fisheries across Alaska, making stream and lake temperature data critical for managing freshwater resources. Evaluating the variation in temperatures across Alaska will improve understanding of impacts of both climate change and development on freshwater habitats. However, collection and dissemination of water temperature data is an ongoing challenge across Alaska. To address this challenge, the research team will increase cooperation and coordination among data collectors in Interior Alaska by conducting an in-person stream temperature trainingand adapting the...
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Snow avalanches alter mountain environments and have both beneficial and harmful effects on wildlife. Avalanches can benefit wildlife by creating open areas for grazing but can also be deadly when animals are buried in avalanche debris. Avalanches pose high risks to mountain goats because they inhabit rugged and steep terrain, but the actual impacts of avalanches on mountain goats remain unknown.  The goal of this project is to understand how avalanches impact mountain goat habitat and mortality in the Coast Mountains of southeast Alaska. The research team will use long-term data collected from 434 mountain goats outfitted with GPS collars from 2005 to 2022 and avalanche hazard maps to understand how mountain...
Snow is a major, climate-sensitive feature of the Earth’s surface and catalyst of fundamentally important ecosystem processes. Understanding how snow influences sentinel species in rapidly changing mountain ecosystems is particularly critical. Whereas effects of snow on food availability, energy expenditure, and predation are well documented, we report how avalanches exert major impacts on an ecologically significant mountain ungulate - the coastal Alaskan mountain goat (Oreamnos americanus). Using long-term GPS data and field observations across four populations (421 individuals over 17 years), we show that avalanches caused 23−65% of all mortality, depending on area. Deaths varied seasonally and were directly...
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In ecosystems characterized by flowing water, such as rivers and streams, the dynamics of how the water moves - how deep it is, how fast it flows, how often it floods - have direct effects on the health, diversity, and sustainability of underlying communities. Yet increasingly, climate extremes like droughts and floods are disrupting fragile stream ecosystems by specifically changing their internal aquatic flows. Human infrastructure, such as irrigation and dams, further disrupt these dynamics. These changes in climate and land use are leading to teh fragmentation of aquatic habtiat, degraded water quality, altered sediment transport processes, variation in the timing and duration of floodplain inundation, shifts...
map background search result map search result map Building a Coastal Flood Hazard Assessment and Adaptation Strategy with At-Risk Communities of Alaska Compilation of Historical Water Temperature Data for Large Rivers in Alaska using the Landsat Satellite Archive Enhancing Water Temperature Monitoring Efforts across Alaska through Collaborative Leveraging of a Statewide Database Future of Aquatic Flows: Towards a National Synthesis of Streamflow Regimes Under a Changing Climate Future of Aquatic Flows: Impacts of Cryospheric Change on Aquatic Flows and Freshwater Habitat Quality for Fish and Communities Evaluating How Snow Avalanches Impact Mountain Goat Populations in Southeast Alaska Evaluating How Snow Avalanches Impact Mountain Goat Populations in Southeast Alaska Building a Coastal Flood Hazard Assessment and Adaptation Strategy with At-Risk Communities of Alaska Compilation of Historical Water Temperature Data for Large Rivers in Alaska using the Landsat Satellite Archive Enhancing Water Temperature Monitoring Efforts across Alaska through Collaborative Leveraging of a Statewide Database Future of Aquatic Flows: Impacts of Cryospheric Change on Aquatic Flows and Freshwater Habitat Quality for Fish and Communities Future of Aquatic Flows: Towards a National Synthesis of Streamflow Regimes Under a Changing Climate