[2012-08-13] Stepping stones to the north + http://www.sciencedaily.com/releases/2012/08/120813155243.htm + http://www.pnas.org/content/early/2012/08/14/1210251109.abstract + http://www.rspb.org.uk/news/322161-stepping-stones-to-the-north-citizen-science-reveals-that-protected-areas-allow-wildlife-to-spread-in-response-to-climate-change in Tietoukka Monitor > 2012 > 2012-33with colonizationprotected_areas