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2012-07-16. Alaskan Salmon Evolve Along With the Climate

posted Jul 24, 2012, 4:47 PM by Lisa Ou
| by Nicholas Bakalar, The NY Times. An article relevant to GSS Climate Change chapter 4. Excerpt: Alaskan salmon are apparently evolving to adapt to climate change. Researchers have suspected that temperature-driven changes in migration and reproduction behaviors — which have happened in many species — may be evidence of natural selection at work. Now there is genetic evidence to confirm the hypothesis…In the 1980s, the genetically marked late migrators made up about a third of the population. But as streams started warming earlier in the year, the proportion began to decrease rapidly — to just 5 percent by 2011 — even though overall abundance did not change…. Read more: http://www.nytimes.com/2012/07/17/science/alaskan-salmon-evolve-along-with-the-climate.html?_r=2&ref=science