Freshwater macrophyte communities in lakes of variable landscape position and development in northern Wisconsin, U.S.A.

摘要: Using multivariate analyses, we evaluated the roles of landscape position and human development in presence, composition, abundance freshwater macrophyte communities among 60 study lakes located Vilas County, Wisconsin. These varied their a drainage network surrounding land use as well size, maximum depth, chemistry, clarity. We used non-metric multidimensional scaling ordination, cluster classification tree analyses to assess relationships environmental variables including an index development. Macrophyte high were found be dominated by isoetids while low elodeids due difference bicarbonate concentrations. The presence human-introduced crayfish, Orconectes rusticus, had significant correlation with absence macrophytes. An increase correlated decrease abundance.