Air Pollution Affects Pattern of Photosynthesis in Parmelia sulcata, a Corticolous Lichen

See allHide authors and affiliations

Science  18 Jun 1965:
Vol. 148, Issue 3677, pp. 1600-1602
DOI: 10.1126/science.148.3677.1600


Lichen disks kept in flasks contaminated with sulfur dioxide showed morphologic and photosynthetic abnormalities similar to those of lichens from an industrial center in Sweden, but lichens dried out for 4½ to 6 months in the laboratory showed neither. Thus some kinds of lichens may be absent from city environments because of atmospheric pollutants which destroy chlorophyll.