Photosynthetic recovery in arctic caribou forage lichens following a long-term field sulfur dioxide fumigation
- 1 January 1983
- journal article
- Published by Canadian Science Publishing in Canadian Journal of Botany
- Vol. 61 (1) , 367-370
- https://doi.org/10.1139/b83-041
Abstract
The gross photosynthetic response of Cladonia stellaris (Opiz.) Pouz. & Vezda., Cladonia rangiferina (L.) Wigg., and Cetraria cucullata (Bell.) Ach. was monitored during three growing seasons subsequent to a long-term, in situ SO2 fumigation conducted in 1978 at Anaktuvuk Pass, AK. The lichen vegetation which had experienced the greatest SO2 stress during the 1978 fumigation remained photosynthetically inactive. Significant photosynthetic recovery was discovered in the test species which had experienced sublethal concentrations of SO2; however, their photosynthetic capacities remained less than controls.Keywords
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