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Article: Research findings from A.J. Millerrushing et al update understanding of botany.(Report)
- Article from:
- Global Warming Focus
- Article date:
- November 9, 2009
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"Leaf-level responses to increases in atmospheric carbon dioxide (CO2) concentrations could have large implications for water and carbon cycles. We investigated whether stomatal density, guard cell length, and intrinsic water use efficiency (iWUE) of 27 individual trees growing at the Arnold Arboretum in Boston," scientists writing in the American Journal of Botany report.
"Massachusetts have responded to changing environmental conditions over the last 100 years. We examined leaves from 74 herbarium specimens collected from three genera-Acer (maples), Quercus (oaks), and Carpinus (hornbeams)-from 1893 to 2006. During this period, global average atmospheric CO2 ...