Word: davises
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Dates: during 2000-2009
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Together with his graduate students, Charlie G. Willis and Brad R. Ruhfel, Davis compiled an evolutionary tree of the entire community of flora that had existed in the Concord area in the mid-19th century.
But two years ago, the pair was presenting their work at the Harvard Herbarium when, in the middle of the talk, Davis popped his hand in the air.
“Using phylogenies to think about interesting patterns of bioevolution and global [climate] change just seemed like a perfect avenue to think about this pattern of species loss using a novel evolutionary perspective,” Davis said.
The shift in flowering times, however, was not uniform—some species groups were flowering more than three weeks earlier, while others were flowering “like clockwork around mid-May,” Davis said.
“The real downer about this all is that the groups that are being hardest hit are our most cherished temperate flowering species: orchids, buttercups, roses, dogwoods, violets,” Davis said. “These are the kind of species that people go out on botanical...