travelling trees

In a paper appearing this month in the journal Forest Ecology and Management, the study authors documented the northward march of 40 major tree species over 30 eastern states based on the distribution of seedlings versus mature trees.

The finding confirms a link between global warming and forest migration, said lead study author Chris Woodall, of the Forest Service’s Northern Research Station in St. Paul, Minnesota.

“This is no longer conjecture,” he said. National Geographic News, 9 Feb 2009