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Rainfall as a cause of mechanical damage to Pseudocyphellaria rufovirescens in a New Zealand temperate rainforest
Abstract
Lichens, like all poikilohydric plants, have a metabolism that is dependent on external moistening from their environment. In the case of green algal lichens high humidities may be sufficient for positive net photosynthesis to occur (Lange et al. 1993a). For these plants water stress is usually taken to mean a lack of water (Kappen 1988; Rundel 1988) but it can also mean an excess of water that leads to depressed CO2 exchange because of increased diffusion resistances at high thallus water contents (Lange & Tenhunen 1981; Kershaw 1985). Rather than this being an unusual occurrence, Lange et al. (19936) found reduced CO2 exchange at thallus supra-saturation to be present over long periods in the temperate rainforest of north-eastern New Zealand.
Type
Journal Article
Type of thesis
Series
Citation
Budel, B., Green, T.G.A., Meyer, A., Zellner, H. & Lange, O.L. (1995). Rainfall as a cause of mechanical damage to Pseudocyphellaria rufovirescens in a New Zealand temperate rainforest. The Lichenologist, 27(4), 317-319.
Date
1995
Publisher
Cambridge University Press
Degree
Supervisors
Rights
This article has been published in the journal: The Lichenologist. © 1995 Cambridge University Press.