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Salmon are an important resource to the ecosystems, economy, and culture of the Kenai Peninsula, Alaska. However, salmon are under increasing stress due to warming water temperatures and decreasing stream flow. Groundwater is a major contributor to many streams that can help maintain fish habitat during low flows and contributes cooler water that regulates stream temperatures in the warm summer months. As the climate warms, the ability for groundwater to cool stream temperatures will likely become more critical to streams that are used by salmon, such as Beaver Creek near Kenai, Alaska. Preliminary analysis of historical streamflow data indicates that on average, Beaver Creek receives nearly 80% of its flow...
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Berry-producing plants, a key resource in Alaska Native communities, provide primary subsistence and have been integral to maintaining cultural cohesion, sense of place, and physical ties to the surrounding landscape. Despite the importance of berry-producing plants, relatively little is known about their vulnerability to changes in climate and environmental conditions. The dynamics of insect populations are strongly related to climate; however, very little is known about the insect pollinators of berry plants in Arctic and sub-Arctic ecosystems. This interaction between plants and pollinators is critical to plant communities and for providing fruit resources to Indigenous communities. Numerous plant species...
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The Situk River is among the most productive resource in Alaska, with nine native fish species and 10 times the density of juvenile coho salmon than any other Southeast Alaskan watershed. The associated fisheries in the Situk River and its adjoining estuary drive a $2 million economy for the community of Yakutat (population 600), with 89 percent of the households harvesting salmon for subsistence purposes. The Yakutat foreland area that encompasses the Situk River watershed is a vast landscape of low gradient drainages with forested mosaics of side channels and pools that are responsible for up to 80 percent of coho salmon production. These highly productive aquatic habitats are sensitive to even small shifts in...
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Stream discharge and temperature patterns are being altered by climate change, but documenting these changes on the community level is challenging without community partners trained in suitable data collection techniques. The USGS Juneau Field Office is collaborating with the Yakutat Tlingit Tribe (YTT), the Southeast Alaska Tribal Ocean Research (SEATOR) network, and the Southeast Alaska Watershed Coalition (SAWC) to integrate stream discharge and stream temperature monitoring into ongoing Tribal-led climate adaptation, water quality, and species management projects. Stream discharge and temperature data is limited in Southeast Alaska and improving the spatial coverage of this data would be mutually beneficial...
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Climate adaptation planning provides a framework for Tribes to exercise sovereignty over wild resources important for the subsistence way of life and economic and cultural activities that are being impacted by climate change. The climate adaptation planning process includes identifying key resources that are currently being impacted by climate change, or that may be impacted in the future, as well as identifying practical and strategic steps that can be taken to mitigate or adapt to the changing circumstances. Through a partnership among the Ketchikan Indian Community, the Metlakatla Indian Community, OceansAlaska, and the University of Alaska Fairbanks this project will support Tribal- and Alaska Native-led...
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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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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...
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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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Climate change is impacting the land and resources that Alaska Native peoples rely on for food security, resource management, and cultural continuity. In Southeast Alaska, communities face increased weather variability due to climate change, which impacts subsistence food resources in streams and coastal ocean waters. Alaska Native communities are asking for co-production models of scientific research that involve authentic partnerships and provide direct and tangible solutions to pressing climate adaptation challenges. Co-production of knowledge is broadly recognized as a valuable approach to climate research, but there is a lack of information about how to successfully implement and evaluate the co-production...
    map background search result map search result map Building a Coastal Flood Hazard Assessment and Adaptation Strategy with At-Risk Communities of Alaska Integrating Stream Discharge and Temperature Monitoring for Tribal Partners in Southeast Alaska Groundwater Flow and Temperature Modeling to Predict Stream Temperatures in Beaver Creek, Kenai Peninsula, Alaska Compilation of Historical Water Temperature Data for Large Rivers in Alaska using the Landsat Satellite Archive Enhancing Climate Adaptation for Native Communities in Western Alaska: Linking Pollinator Diversity and Abundance to Berry Production in a Rapidly Changing Environment Enhancing Water Temperature Monitoring Efforts across Alaska through Collaborative Leveraging of a Statewide Database Building Tribal Capacity to Adapt and Respond to Climate Change in Southeast Alaska Community Engagement in a Stream-network Assessment of Salmon Thermal-habitat in the Situk River Watershed of Yakutat, Alaska Co-producing Climate Research and Adaptation through Partnerships with Alaska Native Communities Evaluating How Snow Avalanches Impact Mountain Goat Populations in Southeast Alaska Groundwater Flow and Temperature Modeling to Predict Stream Temperatures in Beaver Creek, Kenai Peninsula, Alaska Community Engagement in a Stream-network Assessment of Salmon Thermal-habitat in the Situk River Watershed of Yakutat, Alaska Integrating Stream Discharge and Temperature Monitoring for Tribal Partners in Southeast Alaska Building Tribal Capacity to Adapt and Respond to Climate Change in Southeast Alaska Co-producing Climate Research and Adaptation through Partnerships with Alaska Native Communities 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 Enhancing Climate Adaptation for Native Communities in Western Alaska: Linking Pollinator Diversity and Abundance to Berry Production in a Rapidly Changing Environment