Histochemical observations on the salmonids Salmo salar L. and Salmo trutta L. and the ephemeropterans Baetis rhodani (Pict.) and Ecdyonurus venosus (Fabr.) following a simulated episode of acidity in an upland stream C. P. Mc CahonD. PascoeC. Mc Kavanagh OriginalPaper Pages: 3 - 12
Rare species of Bulbochaete (Chlorophyceae: Oedogoniales) from Birbhum and Murshidabad districts of West Bengal, India A. N. KarguptaP. Sarma OriginalPaper Pages: 13 - 21
Two new interesting genera of Gastrotricha (Macrodasyida and Chaetonotida) from the Brazilian freshwater psammon Jacek Kisielewski OriginalPaper Pages: 23 - 30
Phytoplankton of a recently landlocked brackish-water lagoon of Lake Tanganyika: a systematic account A. G. Caljon OriginalPaper Pages: 31 - 54
A recently landlocked brackish-water lagoon of Lake Tanganyika: physical and chemical characteristics, and spatio-temporal distribution of phytoplankton A. G. Caljon OriginalPaper Pages: 55 - 70
Syrticola mediterraneus n. sp., a harpacticoid copepod from the Bay of Calvi, Corsica K. A. WillemsD. ClaeysF. Fiers OriginalPaper Pages: 71 - 78
Removal of floodwater nitrogen in a cypress swamp receiving primary wastewater effluent W. F. DeBuskK. R. Reddy OriginalPaper Pages: 79 - 86
Problems associated with selecting the most sensitive species for toxicity testing John Cairns Jr.B. R. Niederlehner OriginalPaper Pages: 87 - 94