Photosynthetic recovery in arctic caribou forage lichens following a long-term field sulfur dioxide fumigation

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 SO 2 fumigation conducted in 1978 at Anaktuvuk Pass, AK. The lichen v...

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Bibliographic Details
Published in:Canadian Journal of Botany
Main Authors: Moser, Thomas J., Nash III, Thomas H., Olafsen, Astrid G.
Format: Article in Journal/Newspaper
Language:English
Published: Canadian Science Publishing 1983
Subjects:
Plant Science
Arctic
Cladonia rangiferina
Online Access:http://dx.doi.org/10.1139/b83-041
http://www.nrcresearchpress.com/doi/pdf/10.1139/b83-041
Description
Summary: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 SO 2 fumigation conducted in 1978 at Anaktuvuk Pass, AK. The lichen vegetation which had experienced the greatest SO 2 stress during the 1978 fumigation remained photosynthetically inactive. Significant photosynthetic recovery was discovered in the test species which had experienced sublethal concentrations of SO 2 however, their photosynthetic capacities remained less than controls.

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