Amphibians are ectotherms (cold-blooded) that require relatively mild temperatures to survive. In Alaska, they hibernate in the winter to cope with low temperatures and are primarily restricted to Southeast Alaska. Only the cold-adapted wood...
Models from the Alaska Gap Analysis Project (AKGAP) were developed in 2014 as part of a nation-wide program administered by USGS to assess the extent to which species and vegetation communities are represented within the protected areas. GAP...
From temperate rainforests to arctic tundra, a wealth of ecosystems span the vast and varied landscapes of Alaska. Among these are rare ecosystems, which support unique assemblages of specialized and/or diverse flora and fauna within a small...
Freshwater ecosystems of the Alaskan Arctic and Subarctic provide resources that are culturally, ecologically, and economically invaluable. Presently, these regions are relatively free of the impacts from invasive species compared to southern...
Alaska’s vast size, sparse human population, and access challenges often result in the state’s relatively thin data coverage compared to the other 49 US States for a number of key datasets including the USGS stream gauging network. Forty-one...
Phytoplankton blooms occur when environmental conditions are conducive to the exponential growth of phytoplankton (microscopic plants that float in the upper, sunlit layers of water). They are a common phenomenon in the ocean and are part of...
Collection of materials including phytoplankton and invertebrate guides, toxin information, fact sheets, best practices, etc.
Collection of materials including phytoplankton and invertabrate guides, toxin information, fact sheets, best practices, etc.
Stream temperature influences the growth, abundance, distribution, timing of life history events, and survival of Pacific salmon. Over the past 60 years, Alaska has warmed at more than twice the rate of the lower 48 states and warm water...