Estimating ecotoxicological risk and impact using indigenous aquatic microbial communities John Cairns Jr.Paul V. McCormickB. R. Niederlehner OriginalPaper Pages: 131 - 145
Seasonal temperature patterns in an arctic and two subarctic Alaskan (USA) headwater streams John G. Irons IIIMark W. Oswood OriginalPaper Pages: 147 - 157
Fish populations of lentic environments of the ParanĂ¡ River Elly de Yuan Cordiviola OriginalPaper Pages: 159 - 173
Littoral and limnetic zooplankton communities in Lake Mead, Nevada-Arizona, USA Patrick J. SollbergerLarry J. Paulson OriginalPaper Pages: 175 - 184
Differentiation of North American and European forms of Fredericella sultana (Blumenbach) (Ectoprocta: Phylactolaemata) Timothy S. WoodByron T. Backus OriginalPaper Pages: 185 - 193