Recent findings by USGS Alaska Science Center staff and their collaborators, updated weekly.
Click the title to see the full description and links to more information.
Increased Pathogen Exposure of Polar Bears in the Chukchi Sea
A new study examined changes in polar bear pathogen exposure across three decades. Prevalence of serum antibodies, indicative of exposure, increased between 1987-1994 and 2008-2017 for five pathogens.
Modeling, Mapping, and Measuring the Risk of Invasive Freshwater Species Across Alaska
A new report describes a collaborative effort to identify and prioritize aquatic invasive species known to be invasive in the contiguous U.S. and evaluate current and future habitat suitability for invasive species in Alaska.
Why the Tallest Mountain in North America is so Tall?
Denali is nearly 10,000 feet taller than most surrounding peaks in the Alaska Range. This paper describes tectonic, structural, geologic, and climatic drivers that contribute to the growth of Denali.
Assessing the Population Consequences of Disturbance and Climate Change for the Pacific Walrus
A new study developed and applied a modeling framework that incorporates global sea ice model projections and varying degrees of disturbance to assess potential future changes to the Pacific walrus population.
Understanding Sea Otter Population Change in Southeast Alaska
A new USGS fact sheet describes how the Southeast Alaska sea otter population has changed through time since they were reintroduced to this region in the late 1960s.
Recent findings by USGS Alaska Science Center staff and their collaborators, updated weekly.
Click the title to see the full description and links to more information.
Increased Pathogen Exposure of Polar Bears in the Chukchi Sea
A new study examined changes in polar bear pathogen exposure across three decades. Prevalence of serum antibodies, indicative of exposure, increased between 1987-1994 and 2008-2017 for five pathogens.
Modeling, Mapping, and Measuring the Risk of Invasive Freshwater Species Across Alaska
A new report describes a collaborative effort to identify and prioritize aquatic invasive species known to be invasive in the contiguous U.S. and evaluate current and future habitat suitability for invasive species in Alaska.
Why the Tallest Mountain in North America is so Tall?
Denali is nearly 10,000 feet taller than most surrounding peaks in the Alaska Range. This paper describes tectonic, structural, geologic, and climatic drivers that contribute to the growth of Denali.
Assessing the Population Consequences of Disturbance and Climate Change for the Pacific Walrus
A new study developed and applied a modeling framework that incorporates global sea ice model projections and varying degrees of disturbance to assess potential future changes to the Pacific walrus population.
Understanding Sea Otter Population Change in Southeast Alaska
A new USGS fact sheet describes how the Southeast Alaska sea otter population has changed through time since they were reintroduced to this region in the late 1960s.