Environmental controls on stomatal conductance in a shrub of the humid tropics.
Leaves of Piper hispidum, a shrub native to the lowland tropics of Mexico, have a strong stomatal response to humidity that results in similar rates of water loss under a wide range of leaf-to-air water-vapor concentration gradients. Stomatal conductance of these leaves is insensitive to CO(2) concentration and increases in response to high humidity even in the dark.
Department of Biological Sciences, Stanford University, Stanford, California 94305.
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Mooney
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Field
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Yanes
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Chu