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Plant stomata display a wide range of short-term behavioural and long-term morphological responses to atmospheric carbon dioxide concentration ([CO2]). The diversity of responses suggests that plants may have different strategies for controlling gas exchange, yet it is not known whether these strategies are co-ordinated in some way. Here, we test the hypothesis that there is co-ordination of physiological...
The inverse relationship between the number of stomata on a leaf surface and the atmospheric carbon dioxide concentration ([CO2]) in which the leaf developed allows plants to optimise water-use efficiency (WUE), but it also permits the use of fossil plants as proxies of palaeoatmospheric [CO2]. The ancient conifer family Araucariaceae is often represented in fossil floras and may act as a suitable...
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