Spring Back

Kessler, Rebecca
November 2006
Natural History;Nov2006, Vol. 115 Issue 9, p18
The article discusses research being done on herbarium specimens and climate change. It references a study by Abraham J. Miller-Rushing and Richard B. Primack, published in the 2006 issue of the "American Journal of Botany." On Memorial Day, 1868, an old photograph shows, the deciduous trees in Lowell Cemetery in Massachusetts had yet to leaf out. On Memorial Day, 2005, they stood in full verdure. Leafing or flowering dates each year depend on temperature, and global warming has been driving those events earlier in many places. Records of past plant development are scarce, though, so analyzing trends in timing has been difficult.


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