Oscillations in density and diversity ofPisidium communities in two biotopes in Southern Poland Anna Dyduch-falniowska OriginalPaper Pages: 123 - 132
Microdistribution of macroinvertebrates in lowland streams Harry H. Tolkamp OriginalPaper Pages: 133 - 148
A qualitative analysis of macrofaunasampling in ditches W. RietveldB. Beltman OriginalPaper Pages: 149 - 157
Note on the distribution ofSigara selecta (Fieber) in the brackish inland waters of the south-west Netherlands B. P. M. Krebs OriginalPaper Pages: 159 - 164
A distinct temporal separation of maximum bacterial numbers and phytoplankton biomass in the open-water zone of Lake Maarsseveen I: Results and literature review Kees KoningJaap Dorgelo ReviewPaper Pages: 181 - 190
Release of sediment-phosphorus and the influence of algal growth on this process Louis Van LiereJosje PetersLuuc R. Mur OriginalPaper Pages: 191 - 200
Seasonal variations in the growth and amino acid pattern ofCaulerpa prolifera (Foerskal) Lamouroux A. F. KhaleafaA. F. MohsenS. H. Shaalan OriginalPaper Pages: 201 - 206
Effect of different light intensities on growth, amino-acid, fat and sugar concentrations inCaulerpa prolifera (Foerskal) Lamouroux A. F. KhaleafaA. F. MohsenS. H. Shaalan OriginalPaper Pages: 207 - 212
Effect of desiccation on internal changes with respect to survival ofHydrilla verticillata Rup Kumar KarMonojit A. Choudhuri OriginalPaper Pages: 213 - 221
Heavy metals inUlva lactuca collected within Tolo Harbour, an almost landlocked sea M. H. WongT. T. KwokK. C. Ho OriginalPaper Pages: 223 - 230
Some ecological consequences of a projected deep reservoir in the Kabalebo River in Suriname J. A. Van PageeS. GrootJ. H. G. Verhagen OriginalPaper Pages: 241 - 254
A preliminary comparison of two turbid coastal ecosystems: The Dollard (Netherlands-FRG) and the Cumberland Basin (Canada) Donald C. Gordon Jr.Job W. Baretta OriginalPaper Pages: 255 - 267
The growth of bream (Abramis brama L.) in relation to habitat and population density W. G. Cazemier OriginalPaper Pages: 269 - 277
Changes in the fish fauna of the former Grevelingen estuary, before and after the clousure in 1971 G. Doornbos OriginalPaper Pages: 279 - 283
A simulation model of production, seasonal changes in biomass and distribution of eelgrass (Zostera marina) in Lake Grevelingen P. H. Nienhuis Report Pages: 286 - 286
On the use of measures of structure and diversity in applied diatom ecology Herman Van Dam Report Pages: 288 - 288
N2-fixing cyanobacteria: Why they do not become dominant in shallow hypertrophic lakes Wanda Zevenboom Report Pages: 289 - 290
The effects of mechanical and manual digging for lugworms (Arenicola marina L.) on the benthic fauna of the tidal flats in the Dutch Wadden Sea Taco Van Den Heiligenberg Report Pages: 291 - 292
