A comparison of vascular vegetation and protozoan communities in some freshwater wetlands of Northern Lower Michigan M. S. HenebryJ. Cairns Jr.W. H. Yongue Jr. OriginalPaper Pages: 353 - 375
Electron probe analysis of strontium in mussel (Bivalvia, Mytilidae) shells: Feasibility of estimating water temperature Richard A. Lutz OriginalPaper Pages: 377 - 382
A miniature laboratory stream powered by air bubbles Rosemary J. Mackay OriginalPaper Pages: 383 - 385
Data acquisition and evaluation in biological monitoring systems David GruberJohn Cairns Jr. OriginalPaper Pages: 387 - 393
Effect of long term starvation on the biochemical composition of the muscles and hepatopancreas in the crab Menippe rumphii (Fabricius) (Crustacea: Brachyura) D. Erri BabuK. ShyamasundariK. Hanumantha Rao OriginalPaper Pages: 395 - 401
Effets à long terme de 4 détersifs chez le pulmoné d'eau douce Lymnaea stagnalis L.: Intoxication des adultes Roger BluzatJacqueline Seugé OriginalPaper Pages: 403 - 409
Occurrence of filtering crustacea in the near-bottom and pelagial waters of the Mikolajskie Lake Katarzyna Papińska OriginalPaper Pages: 411 - 418
Temperature dependence of filament length of Anabaena spiroides Klebahn var. crassa Lemm. Humitake SekiHonami OzawaShun-ei Ichimura OriginalPaper Pages: 419 - 423
Impact of acidification on diatoms and chemistry of Dutch moorland pools Herman van DamGillis SuurmondCajo J. F. ter Braak OriginalPaper Pages: 425 - 459
The temperature dependence of the acute toxicity of copper to a freshwater pond snail, Viviparus bengalensis L. P. K. GuptaB. S. KhangarotV. S. Durve OriginalPaper Pages: 461 - 464
Trace metals in edible marine molluscs and crustaceans from Lebanon J. G. Shiber OriginalPaper Pages: 465 - 476
The decline of Salvinia molesta on Lake Kariba B. E. MarshallF. J. R. Junor OriginalPaper Pages: 477 - 484
Surfacing frequency as an index of bioenergetics components of air breathing fishes A. G. PonniahT. J. Pandian OriginalPaper Pages: 491 - 497
Ingestion rate of the burrowing mayfly Hexagenia limbata as determined with14C R. Dermott OriginalPaper Pages: 499 - 503
Factors influencing the species composition, distribution and abundance of benthic invertebrates in the profundal zone of a eutrophic northern lake James W. Moore OriginalPaper Pages: 505 - 510
On the effects of Dikonirt (sodium salt of 2.4-Dichlorophenoxi-acetic acid) on the mortality and reproduction of Daphnia magna Mátyás Présing OriginalPaper Pages: 511 - 516
The effect of ionic form and level of nitrogen on the growth and composition of Eichhornia crassipes (Mart.) Solms Craig S. Tucker OriginalPaper Pages: 517 - 522
