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Full-Text Articles in Life Sciences
Effect Of Sewage Effluent On Bird Abundance And Species Composition In A Northern Minnesota Wetland, Joann M. Hanowski, Gerald J. Niemi
Effect Of Sewage Effluent On Bird Abundance And Species Composition In A Northern Minnesota Wetland, Joann M. Hanowski, Gerald J. Niemi
Journal of the Minnesota Academy of Science
Bird abundance was monitored before (1985 and 1987) and after (1989) sewage wastewater effluent was added to a northern Minnesota wetland. Community parameters (i.e., number of individuals and species richness) varied annually, but, overall bird communities in 1985 and 1989 were more similar to each other than they were to the 1987 community. Relative abundance of 35 bird species was unchanged between years and species abundance ranks were not different between years. Distribution of numbers of individuals (relative percent) within nesting and foraging guilds (species that have similar nesting or feeding requirements) was similar among years. Numbers of species that …
Additions And Confirmations To The Algal Flora Of Itasca State Park Ii. Diatoms From Chambers Creek, Mark B. Edlund
Additions And Confirmations To The Algal Flora Of Itasca State Park Ii. Diatoms From Chambers Creek, Mark B. Edlund
Journal of the Minnesota Academy of Science
A survey of the summer diatom flora of Chambers Creek, Clearwater County, Minnesota, is presented, continuing an inventory of the algal flora from Itasca State Park. Chambers Creek is a short, second-order, hardwater stream with great habitat diversity and a rich algal flora. One hundred and twenty-six diatom taxa representing 45 genera are reported, with many new reports from the park. Recent taxonomic revisions have been incorporated into this study and seven new nomenclatural combinations proposed.