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Science 25 August 1978:
Vol. 201. no. 4357, pp. 739 - 741
DOI: 10.1126/science.201.4357.739
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Articles

Thermal Sensitivity in Lichens

J. D. MACFARLANE 1 and K. A. KERSHAW 1

1 Department of Biology, McMaster University, Hamilton, Ontario, Canada L8S 4K1

Lichens are believed to be extremely resistant to high-temperature stress when desiccated. Results from a reexamination of this concept indicate that some air-dry lichen thalli can be extremely sensitive to even moderate levels of heat stress whereas others exhibit a considerable degree of heat resistance. These differential levels of thermal resistance correlate exactly with the ecology of these populations.

Submitted on March 2, 1978
Revised on April 17, 1978


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Lichenometry.
J. L. Innes and J. L. Innes (1985)
Progress in Physical Geography 9, 187-254
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Science. ISSN 0036-8075 (print), 1095-9203 (online)