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Folders: ROOT > ScienceBase Catalog > National and Regional Climate Adaptation Science Centers > Alaska CASC > FY 2021 Projects ( Show direct descendants )

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The RTK survey, using a Trimble unit, was conducted in August 2021 in the coastal plains region (1002 area) of the Arctic National Wildlife Refuge, as part of a landscape vulnerability assessment. A total of six transects are included in the data, including five research sites and one transect collected at the camp site. Mean horizontal precision was 0.006m, mean vertical precision was 0.011m.
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Elodea spp. (Elodea) is Alaska’s first known invasive aquatic plant, first discovered in urban lakes in 2010. The combination of human pathways and climate change related shifts in seasonality and temperature have resulted in Elodea’s range expansion into Alaska’s freshwater resources. Elodea transmission often occurs when plant fragments get entangled in seaplane rudders and are carried to remote waterbodies where they quickly establish dense plant growth. This growth inhibits seaplane access and drastically alters aquatic ecosystems. Recent research showed that Elodea can have significant negative impacts on parks, subsistence, aviation‐related recreation, and Alaska’s salmon fisheries. For example, the economic...
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The thawing of ice-rich soils in permafrost landscapes, a process known as thermokarst, can result in profound impacts on the energy and water balance, carbon fluxes, wildlife habitat, and existing infrastructure in the local area. The Alaska Thermokarst Model is a “state-and-transition" model being developed to simulate landscape evolution in polygonal tundra landscapes commonly found on the Arctic Coastal Plain of Alaska. This study will focus on the second step of the landscape evolution process – initiation of the thermokarst process through the concept of “climate priming” of the landscape. “Climate priming” occurs when there is high early and total winter snow precipitation, above normal winter temperatures,...
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Retreating glaciers are an iconic image of climate change;yet not all glaciers in Alaska are actively retreating, and a few glaciers are even advancing. While this contrasting behavior can be misleading for the casual observer, variable responses between glaciers in a changing climate are expected. Glaciers act as conveyor belts that transport snow and ice from high elevations, where it does not melt, down to low elevations, where it does melt. A change in climate can impact the amount of snow and ice that accumulates (accumulation), the way snow and ice melt (ablation), or the conveyor belt (ice dynamics). While these impacts vary with elevation and glacier shape, glacier changes have major implications for downstream...
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Major floods in Southeast Alaska and Hawaiʻi that potentially threaten life, property, and culturally significant resources and ecosystems are caused by mechanisms related to intense precipitation for both locations as well as snow melt-based processes for Alaska. Small, high-gradient, and heavily vegetated watersheds with direct contribution to the ocean are common in both locations. To understand how climate change may affect flooding in these regions, an analysis of the underlying mechanisms that cause flooding is needed. The scope of this study includes an analysis of annual peak-streamflow records from long-term streamgages in Southeast Alaska and Hawaiʻi to determine whether the main flood-producing mechanisms...
map background search result map search result map Assessing the Vulnerability of Alaska’s Glaciers in a Changing Climate Detecting and Predicting Aquatic Invasive Species Transmission Via Seaplanes in Alaska Characterization of Flood-Producing Mechanisms in Watersheds with a High-Elevation Area in Southeast Alaska and Hawaiʻi Identification of Regions in Alaska Susceptible to Landscape Deformation Due to “Climate Priming” of Permafrost Soils RTK GPS survey data in 1002 area of the Arctic National Wildlife Refuge RTK GPS survey data in 1002 area of the Arctic National Wildlife Refuge Assessing the Vulnerability of Alaska’s Glaciers in a Changing Climate Detecting and Predicting Aquatic Invasive Species Transmission Via Seaplanes in Alaska Identification of Regions in Alaska Susceptible to Landscape Deformation Due to “Climate Priming” of Permafrost Soils Characterization of Flood-Producing Mechanisms in Watersheds with a High-Elevation Area in Southeast Alaska and Hawaiʻi