The velocity of species dispersal post-last glacial maximum (LGM) is an interesting question from both paleo-historical and contemporary perspectives. The apparent time lag...

This dataset provides a locational map of dams in Southeast Alaska. The National Inventory of Dams was originally developed by the U.S. Army Corps of Engineers and the Federal...

This dataset contains the 2012 version of the anadromous fish streams (polylines) for Southeast Alaska and is pull from the Anadromous Waters Catalog. The Alaska Department of...

This layer contains points representing bedrock waterfalls or other permanent in-stream obstacles that are potential barriers to fish passage on in Southeast Alaska. Waterfalls...

The FishPass_PT layer describes the locations and attributes of current and historical fish passes and channel modifications located within Southeast Alaska.

Rock and willow ptarmigan are abundant herbivores that require shrub habitats in arctic and alpine areas. Shrub expansion is likely to increase winter habitat availability for...

In Arctic ecosystems, freshwater fish migrate seasonally between productive shallow water habitats that freeze in winter and deep overwinter refuge in rivers and lakes. How...