Shootingstars provide clues to likely response of plants to global warming

For his dissertation Brad Oberle delved into the post-Pleistocene history of two rare species of shootingstars (Dodecatheon), thinking that their response to post-glacial warming might provide clues to the response of plants to global warming. He found that one rare species was a glacial relict that had gradually retreated to a refuge habitat near limestone cliffs. The second rare species was not a species at all but instead an ecotype, or variant, of a widespread species that had adapted to the cooler cliff habitat. The glacial relict is the species most at risk as the climate warms.