Summary
Plant species reflected SO2-stress gradients that existed with increased distance from Hawaiian volcano vents which emit SO2. These changes relate, in part at least, to species differences in stomatal responses to SO2. The sensitive leaves do not close their stomata when exposed to elevated atmospheric SO2 concentrations.
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Winner, W.E., Mooney, H.A. Ecology of SO2 resistance. Oecologia 66, 387–393 (1985). https://doi.org/10.1007/BF00378304
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DOI: https://doi.org/10.1007/BF00378304