Work and life of Albert van der Werff (1903–1991) H. De WolfM. A. M. Van HoornE. Zevenhuizen Announcement Pages: 1 - 10
Temporal and spatial patterns of water mites in Lake Maarsseveen I C. DavidsE. H. Ten WinkelC. J. De Groot OriginalPaper Pages: 11 - 17
Distribution and seasonality of desmids in the Maarsseveen Lakes area Peter CoeselHanny Kooijman-Van Blokland OriginalPaper Pages: 19 - 24
Field ecology of freshwater macroalgae in pools and ditches, with special attention to eutrophication J. Simons OriginalPaper Pages: 25 - 33
The benthic algal vegetation of the Mjóifjörđur, Eastern Iceland Ivka M. Munda OriginalPaper Pages: 35 - 49
The dieback ofZostera marina in the 1930's in the Waddensea; An eye-witness account by A. van der Werff C. Den Hartog OriginalPaper Pages: 51 - 54
Causes of the eelgrass wasting disease: Van der Werff's changing theories P. H. Nienhuis OriginalPaper Pages: 55 - 61
Terpsinoe musica Ehrenberg (Bacillariophyceae, centrales), with emphasis on protoplast and cell division F. A. S. Sterrenburg OriginalPaper Pages: 63 - 69
Resting cysts of someChaetoceros species, identified and figured by A. Van der Werff C. Bakker OriginalPaper Pages: 71 - 75
Marine tube-dwelling diatoms and their occurrence in the Netherlands P. M. Houpt OriginalPaper Pages: 77 - 84
Diatom assemblages along a former intertidal gradient: A palaeoecological study of a subboreal clay layer (Western coastal plain, Belgium) Luc Denys OriginalPaper Pages: 85 - 96
Palaeoenvironmental research on diatoms in early and middle Holocene deposits in central North Holland (The Netherlands) Peter C. VosHein De Wolf OriginalPaper Pages: 97 - 115
A coded checklist and ecological indicator values of freshwater diatoms from The Netherlands Herman Van DamAdrienne MertensJos Sinkeldam OriginalPaper Pages: 117 - 133