Heterotrophic bacterial activity and primary production in a hypertrophic African lake Richard D. Robarts OriginalPaper Pages: 97 - 107
A comparison of periphyton community structural and functional responses to heavy metals Michael J. CrosseyThomas W. La Point OriginalPaper Pages: 109 - 121
Temporal dynamics and spatial variation of algae in relation to hydrology and sediment characteristics in the Okefenokee Swamp, Georgia Steven A. SchoenbergJ. Douglas Oliver OriginalPaper Pages: 123 - 133
Two new species of Ergasilidae (Copepoda: Poecilostomatoida) parasitic on Mugil cephalus L. from southern Africa W. H. OldewageJ. G. van As OriginalPaper Pages: 135 - 139
The biological effects of nitrate fertilization and water replacement in an oligotrophic cold water pond Walter K. DoddsRichard W. Castenholz OriginalPaper Pages: 141 - 146
Zooplankton abundance and transport in a tropical white-water river James F. Saunders IIIWilliam M. Lewis Jr. OriginalPaper Pages: 147 - 155
Seasonal variations in the production of antifungal substances by some dictyotales (brown algae) from the french mediterranean coast J. MoreauD. PesandoJ. C. Pionnat OriginalPaper Pages: 157 - 162
Secchi disk — chlorophyll relationships in a lake with highly variable phytoplankton biomass Max M. Tilzer OriginalPaper Pages: 163 - 171
Niche congruency of aquatic macrophytes in central North America with respect to 5 water chemistry parameters Eva Pip OriginalPaper Pages: 173 - 182
Correlations between species richness and exposure: Freshwater molluscs and macrophytes Robert C. Bailey OriginalPaper Pages: 183 - 191