Wetmore, CM 1981: Lichens and air quality in Big Bend National Park, Texas. - The Bryologist84: 426-433. [RLL List # 111-83 / Rec.# 20218] Keywords: TEXAS/ AIR POLLUTION/ BIG BEND NATIONAL PARK
Abstract: 4 figures. ["Ther has been no loss of lichen species at any locality over the past ten years and haze conditions have not changed much. It is concluded that no significant increase in air pollution has occurred within the park over the past 10 years."]
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