Some aspects of osmotic biology of the freshwater leech, Poecilobdella viridis (Blanchard) G. K. KulkarniM. M. HanumanteR. Nagabhushanam OriginalPaper Pages: 103 - 108
Effects of a spate on the macrophyte vegetation of a stream pool Robert Bilby OriginalPaper Pages: 109 - 112
Blackfly (Diptera: Simuliidae) abundance in a lake outlet: test of a predictive model Andrew L. SheldonMark W. Oswood OriginalPaper Pages: 113 - 120
Daily timing of hatching of a rotifer, Keratella cochlearis Robert KeenTodd Miller OriginalPaper Pages: 127 - 128
The occurrence of internal phosphorus loading in two small, eutrophic, glacial lakes in Northeastern Ohio G. Dennis CookeMurray R. McComasRobert H. Kennedy OriginalPaper Pages: 129 - 135
Preliminary observations of the aquatic insects of the smoky mountains: altitudinal zonation in the spring D. L. Stoneburner OriginalPaper Pages: 137 - 143
Relationships between phytoplankton and periphyton communities in a central Iowa stream Donald R. Roeder OriginalPaper Pages: 145 - 151
Sublethal effects of heavy metal contaminated sediment on midge larvae (Chironomus tentans) R. WentselA. McIntoshG. Atchison OriginalPaper Pages: 153 - 156
Biological, chemical and hydrological characters of coastal lagoons of Ghana, West Africa Eric A. Kwei OriginalPaper Pages: 157 - 174
Enzymatic release of phosphate in water from subarctic lakes in Northern Sweden Mats Jansson OriginalPaper Pages: 175 - 180
Effect of some extrinsic factors on the respiratory metabolism of the freshwater Leech, Poecilobdella viridis: Oxygen tension, pH and salt concentrations R. NagabhushanamG. K. Kulkarni OriginalPaper Pages: 181 - 186
The taxonomic and ecological status of the environmentally restricted spongillid species of North America. III. Corvomeyenia carolinensis Harrison 1971 Frederick W. Harrison OriginalPaper Pages: 187 - 190