Spatial and seasonal distribution of phytoplankton in an African Rift Valley lake (L. Albert, Uganda, Zaire) J. H. Evans OriginalPaper Pages: 1 - 16
Phycoflora of the tropical high-mountain lake El Sol, Central Mexico, and some biogeographical relationships Alfonso G. Banderas-Tarabay OriginalPaper Pages: 17 - 40
Predation, competition, and co-occurrences of Boeckella and Calamoecia (Copepoda: Calanoida) in Western Australia Edward J. MalyMary P. Maly OriginalPaper Pages: 41 - 50
Density, production and life cycle of Brachycentrus subnubilus Curtis (Trichoptera: Brachycentridae) in a lowland river, Central Poland Janusz MajeckiMaria GrzybkowskaRavichandra Reddy OriginalPaper Pages: 51 - 56
Influence of photoperiod on tuber production in various races of Hydrilla (Hydrilla verticillata) Kerry K. Steward OriginalPaper Pages: 57 - 62
Occurrence of the rotifer, Habrotrocha cf. rosa Donner, in the purple pitcher plant, Sarracenia purpurea L., (Sarraceniaceae) along the eastern seaboard of North America R. L. PetersenL. HanleyR. M. Duffield OriginalPaper Pages: 63 - 66
Dietary overlap and coexistence of chironomid larvae in a detritus-based stream Annette F. Tavares-CromarD. Dudley Williams OriginalPaper Pages: 67 - 81
A special moult after the release of the embryo from the brood pouch of Anomopoda (Branchiopoda, Crustacea): a return to an old question Alexey A. Kotov OriginalPaper Pages: 83 - 87
Limnology of two lake systems of Katmai National Park and Preserve, Alaska: physical and chemical profiles, major ions, and trace elements Jacqueline D. LaPerriere OriginalPaper Pages: 89 - 99
Periphyton distribution and abundance on substrata of different size along a gradient of stream trophy de Montréal Antonella CattaneoTakie KerimianJéôme Marty OriginalPaper Pages: 101 - 110
Intra-clutch offspring size variability in the freshwater zooplankter Daphnia magna Dermot McKee OriginalPaper Pages: 111 - 117
A new species of Gastrosaccus (Crustacea, Mysidacea) from beaches in Madagascar Tris WooldridgeJan MeesPaul Webb OriginalPaper Pages: 119 - 126
Life history and secondary production of Cheumatopsyche spp. in a small Appalachian stream with two different land uses on its watershed Mario Sanchez R.Albert C. Hendricks OriginalPaper Pages: 127 - 139
Effects of zebra mussels on food webs: interactions with juvenile bluegill and water residence time William B. RichardsonLynn A. Bartsch OriginalPaper Pages: 141 - 150
Seasonal changes in chemistry, algal populations, chlorophyll a and photosynthetic activity in the R. Delimi, Jos Plateau, Nigeria M. A. KhanF. Kamuru OriginalPaper Pages: 151 - 156
Redescription and distribution of Boeckella gibbosa (Brehm, 1935) (Copepoda, Calanoida, Centropagidae) Cecilia Locascio de MitrovichSilvina Menu-Marque OriginalPaper Pages: 157 - 163
Contribution to a revision of Floscularia Cuvier, 1798 (Rotifera: Monogononta): notes on some Neotropical taxa Hendrik Segers OriginalPaper Pages: 165 - 175
Biological implications of a suggested Late Pleistocene desiccation of Lake Victoria Geoffrey Fryer OriginalPaper Pages: 177 - 182
Enochrus ater (Kuwert) and E. salomonis (Sahlberg) (Coleoptera: Hydrophilidae), two widespread but overlooked species new to the European fauna Ignacio RiberaStefan SchödlCarles Hernando OriginalPaper Pages: 183 - 188