Effects of a long-term field sulfur dioxide fumigation on Arctic caribou forage lichens
The gross photosynthetic response of Cladonia stellaris (Opiz.) Pouz. & Vezda., Cladonia rangiferina (L.) Wigg., and Cetraria cucullata (Bell.) Ach. to a continuous, long-term, in situ SO 2 fumigation was monitored during the growing season at Anaktuvuk Pass, Alaska. The photo-synthetic capabili...
| Published in: | Canadian Journal of Botany |
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| Main Authors: | , , |
| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
Canadian Science Publishing
1980
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| Subjects: | |
| Online Access: | http://dx.doi.org/10.1139/b80-258 http://www.nrcresearchpress.com/doi/pdf/10.1139/b80-258 |
| Summary: | The gross photosynthetic response of Cladonia stellaris (Opiz.) Pouz. & Vezda., Cladonia rangiferina (L.) Wigg., and Cetraria cucullata (Bell.) Ach. to a continuous, long-term, in situ SO 2 fumigation was monitored during the growing season at Anaktuvuk Pass, Alaska. The photo-synthetic capabilities of the test species were either destroyed or significantly reduced depending upon the SO 2 stress gradient over the fumigation plot. Additional sampling of the plot 1 year after termination of the fumigation revealed no significant recovery in photosynthesis, and chlorophyll contents of the test species were significantly less than the controls. |
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