Alaskan Coastal

WWF Abstract

This ecoregion includes a tier of river systems along the western and northern coasts of Alaska, including the drainages of Bristol Bay, the lower Yukon River, and the coastal drainages up to the watershed divide at the MacKenzie River delta on the Arctic slope. The region incorporates most of the unglaciated areas from the Wisconsin Ice Age that contain relict species, most prominently the Alaskan blackfish (Dallia pectoralis). The Lower Yukon River is separated from Upper Yukon because of a high dissimilarity between their fish faunas and the history of the Lower Yukon as a glacial refuge zone. The dividing line between the Lower and Upper Yukon coincides with the farthest upstream records of Dallia at Tanana and Fairbanks
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Biome:Polar Freshwaters
Countries:Canada, United States
Area:244,807,227 acres (99,069,970 hectares)
Species:All  Endangered  Invasive
Ecoregions provided by World Wide Fund For Nature (WWF). WildFinder: Online database of species distributions, ver. 01.06 WWF WildFINDER