Nitrogen fixation by Nodularia spumigena Mertens (Cyanobacteriaceae). 1: Field studies and the contribution of blooms to the nitrogen budget of the Peel-Harvey Estuary, Western Australia A. L. Huber OriginalPaper Pages: 193 - 203
The distribution of Heterotrissocladius oliveri Saether (Diptera: Chironomidae) in Lake Michigan Michael H. WinnellDavid S. White OriginalPaper Pages: 205 - 214
Decomposition and nutrient dynamics of litter from four species of freshwater emergent macrophytes James T. MorrisKate Lajtha OriginalPaper Pages: 215 - 223
The distribution and abundance of benthic cyclopoid copepods in Esthwaite Water, Cumbria Stuart TinsonJohanna Laybourn-Parry OriginalPaper Pages: 225 - 234
Winter phytoplankton communities of Utah Lake, Utah, USA Lorin E. SquiresSamuel R. Rushforth OriginalPaper Pages: 235 - 248
Effect of a single residual chlorine pulse upon subsequent in vitro protein synthesis by rainbow trout (Salmo gairdneri) liver David R. OrvosCletus M. Sellers Jr.Norman E. Garrison OriginalPaper Pages: 249 - 255
Growth of water hyacinth (Eichhornia crassipes (Mart.) Solms) in the middle Paraná River (Argentina) Ricardo E. FitzsimonsRubén H. Vallejos OriginalPaper Pages: 257 - 260
The nature of zooplankton spatial heterogeneity in a nonriverine impoundment Robert S. HaywardMichael J. Van Den Avyle OriginalPaper Pages: 261 - 271
Trace element composition of Pistia stratiotes L. in a polluted lake in Nigeria M. K. C. Sridhar OriginalPaper Pages: 273 - 276
Effect of habitable space on substrate selection by Paragnetina media (Walker) (Plecoptera: Perlidae) Blair W. FeltmatePhilip J. Pointing OriginalPaper Pages: 277 - 279
Nematodes as a possible cause of rhizome damage in three species of Potamogeton Krystyna Prejs OriginalPaper Pages: 281 - 286