Why is the black crowberry heading north?

Environmental Research Web, 3 May 2012
environmentalresearchweb.org/cws/article/news/49509

Warmer temperatures in the future are predicted to make many northern hemisphere plants march northwards. For some plant species, such as the “black crowberry”, this northward migration appears to have already begun; but is the movement really due to climate change? New research suggests that rising temperatures cannot explain it all.

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