Untersuchungen über nekrozönosen und taxozönosen der testacea (protozoa) im zirbenwaldmoor (Obergurgl, Tirol/Austria) H. LamingerM. SchopperP. Mantl OriginalPaper Pages: 193 - 202
Observations on a new species of Symphyonemopsis Tiwari & Mitra, viz. S. Pantii n. sp. (Cyanophyta, Stigonematales) Asha ChadhaD. C. Pandey OriginalPaper Pages: 209 - 215
Successional events following simazine application Shirley A. Crawford OriginalPaper Pages: 217 - 223
Aquatic insect drift through a final-cut strip mine pit, with emphasis on drift distances William S. Vinikour OriginalPaper Pages: 225 - 232
Cladocera of Malaysia and Singapore with new records, redescriptions, and remarks on some species B. A. G. IdrisC. H. Fernando OriginalPaper Pages: 233 - 256
Scanning electron microscopy of taxonomic diagnostic criteria of the freshwater sponge, Heteromeyenia tubisperma (Potts, 1881) (Porifera : Spongillidae) Frederick W. Harrison OriginalPaper Pages: 257 - 259
Fish populations in the Parana River. 2. Santa Fe and Corrientes areas Elly de Yuan CordiviolaClarice Pignalberi OriginalPaper Pages: 261 - 272
An automatic system to study the responses of respiration and photosynthesis by submerged macrophytes to environmental variables F. Hugh DawsonDerek F. WestlakeGordon I. Williams OriginalPaper Pages: 277 - 285