||Seasonal Abundance Patterns of Diatoms on 'Cladophora' in Lake Huron.
Stevenson, R. Jan ;
Stoermer, E. F. ;
||Michigan Univ., Ann Arbor. Great Lakes Research Div.;Environmental Research Lab.-Duluth, MN.
Lake Huron ;
Seasonal variations ;
Sewage treatment ;
Sewage disposal ;
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
Rocks bearing Cladophora were collected from May to November 1979 at two locations near Harbor Beach, Michigan, in Lake Huron to document seasonal patterns of epiphytic diatom abundance and diatom proportion of the Cladophora-epiphyte assemblage biomass in an area receiving effluent from a municipal wastewater treatment plant. Data were examined for evidence of interactions between epiphytic diatoms and Cladophora. Cladophora first appeared in May at which time epiphytic diatoms comprised about 30% of the Cladophora-epiphytic assemblage biomass. Cladophora growth was greatest in June and July accumulating much faster than diatoms. Peak Cladophora-epiphyte assemblage biomass was maintained from July to September. Cladophora biomass apparently decreased after August while diatom abundance increased to a September maximum. (Copyright (c) Internat. Assoc. Great Lakes Res., 1982.)