Evolution of a Stream: Plants and sea-life claim new territory as glaciers retreat in Glacier Bay, Alaska

As tidewater glaciers beat a hasty retreat up Glacier Bay in southeast Alaska, they uncover rocky, barren landscapes and feed cold lakes and streams -- new habitat for life's hardy explorers. Researchers have now described the evolution and assembly of a stream ecosystem in newly de-glaciated terrain, from early insect and crustacean invaders to the arrival of migrating salmon.

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