Washburn, S. J./ Culley, T. M. 2006: Epiphytic macrolichens of the greater Cincinnati metropolitan area — part II: distribution, diversity and urban ecology. - The Bryologist109(4): 516-526. [RLL List # 206 / Rec.# 29333] Keywords: CINCINNATI/ URBAN ECOLOGY/ BIODIVERSITY/ OHIO/ IAP/ KENTUCKY
Abstract: ["It was found that the diversity of the epiphytic lichens examined in this study was associated with tree species, tree size and annual vehicle traffic, but not with human population density ... or side of the tree observed (cardinal direction)."