586 air airpollution algae analysis antarctica ascomycetes atlases biomineralization britishisles bryophytes canada chemotaxonomy classification congresses control costarica ecology effectofairpollutionon europe ferns fungi geographicaldistribution greatbritain identification lichenology maps measurement microbialmetabolism nomenclature northamerica northeasternstates northwest norway pacific pertusaria physiology pictorialworks plantchemotaxonomy pollution prevention protozoa southgeorgia southgeorgiaandsouthsandwichislands unitedstates vegaherad wa754h395l1976