Roughness and color of artificial substratum particles as possible factors in colonization of stream invertebrates Hugh F. CliffordVytenis GotceitasRichard J. Casey OriginalPaper Pages: 89 - 95
The life cycle and growth ofIsoperla grammatica andI. difformis (Plecoptera) in southernmost Sweden: intra- and interspecific considerations Björn MalmqvistPer Sjöström OriginalPaper Pages: 97 - 108
Chronic toxicity of cadmium toChironomus riparius Meigen — effects upon larval development and adult emergence David PascoeKendall A. WilliamsDavid W. J. Green OriginalPaper Pages: 109 - 115
DoesAgapetus fuscipes cultivate algae in its case? Eileen J. CoxRüdiger Wagner OriginalPaper Pages: 117 - 120
Diurnal changes in zooplankton respiration rates and the phytoplankton activity in two Chilean lakes T. E. AndrewS. CabreraV. Montecino OriginalPaper Pages: 121 - 135
Aggregation of littoral macrobenthic species: some theoretical and practical considerations P. M. MeireJ. P. J. DereuD. W. G. Develter OriginalPaper Pages: 137 - 148
The distribution of species of the genusThermocyclops (Copepoda, Cyclopoida) in the western hemisphere, with description ofT. parvus, new species Janet W. Reid OriginalPaper Pages: 149 - 174