Hydrobiologia

Part I; SEDIMENT–WATER INTERACTION 11
pp. 1-2(2)

Editorial – a call for help; The Prespa Lakes – a call for help in a distressing situation
pp. 3-4(2)

The occurrence and behaviour of phosphate fractions in Izmir Bay, Aegean Sea
pp. 5-18(14)
Authors: Bizsel N.; Bizsel K.C.

Seasonal variation of nitrogen transformations in the pelagial of selected nearshore waters of the Baltic Sea with emphasis on the particulate pool
pp. 19-30(12)
Authors: Estrum-Yousef S.R.; Schoor A.

Entrapment of pollutants in Mediterranean sediments and biogeochemical indicators of their impact
pp. 31-46(16)
Authors: Fernex F.E.; Migon C.; Chisholm J.R.M.

Fractional phosphate composition in sediments from a tropical river (Catatumbo River, Venezuela)
pp. 47-55(9)
Authors: Elena Romero-González M.; Zambrano E.; Mesa J.; Ledo de Medina H.

Relation between phosphate and organic matter in fish-pond sediments of the Deroua fish farm (Béni-Mellal, Morocco): implications for pond management
pp. 57-70(14)
Authors: Kassila J.; Hasnaoui M.; Droussi M.; Loudiki M.; Yahyaoui A.

Effects of EDTA, FeEDTA and soils on the phosphorus bioavailability for diatom and blue-green algal growth in oligotrophic waters studied by transplant biotests
pp. 71-81(11)
Authors: Løvstad Ø.; Krogstad T.

Multivariate analysis of heavy metal and nutrient concentrations in sediments of Taihu Lake, China*
pp. 83-89(7)
Authors: Wenchuan Q.; Dickman M.; Sumin W.

Vertical variations in kinetics of alkaline phosphatase and P species in sediments of a shallow Chinese eutrophic lake (Lake Donghu)
pp. 91-98(8)
Authors: Yiyong Z.; Jianqiu L.; Min Z.

Phosphate release from anoxic sediments or `What did Mortimer really write?'
pp. 99-106(8)
Author: Golterman H.L.

Guidelines for authors for the sediment issues of Hydrobiologia
pp. 107-108(2)

Part II; REGULAR ARTICLES
pp. 109-110(2)

On the Cyprideis species flock (Crustacea, Ostracoda) in Lake Tanganyika, with the description of four new species
pp. 111-127(17)
Authors: Wouters K.; Martens K.

Four new species of Gomphocythere (Crustacea, Ostracoda) from Lake Tanganyika, East Africa
pp. 129-147(19)
Authors: Park L.E.; Martens K.

Useful characters in identifying copepods of the genus Ergasilus from plankton, with the description of male and female of E. sergipensis n. sp.
pp. 149-157(9)
Authors: Auxiliadora Pinto da Motta Amado M.; Falavigna da Rocha C.E.

Littoral microcrustaceans (Cladocera and Copepoda) as indices of recovery of a limed water system
pp. 159-172(14)
Authors: Walseng B.; Halvorsen G.; Sloreid S-E.

Morphological diversity of the resting eggs in the anostracan genus Chirocephalus (Crustacea, Branchiopoda)
pp. 173-185(13)
Author: Mura G.

Nutrient induced changes in the species composition of epiphytes on Cladophora glomerata Kütz. (Chlorophyta)
pp. 187-196(10)
Authors: Marks J.C.; Power M.E.

Resolution of spatial patterns in three reservoirs with rapid profiling instrumentation
pp. 197-208(12)
Authors: Effler S.W.; O'Donnell D.M.

Comparison of oxygen consumption in freshwater mussels (Unionidae) from different habitats during declining dissolved oxygen concentration
pp. 209-214(6)
Authors: Chen L-Y.; Heath A.G.; Neves R.J.

Diatoms and their relationship to environmental variables from lakes and ponds on Bathurst Island, Nunavut, Canadian High Arctic
pp. 215-230(16)
Authors: Lim D.S.S.; Douglas M.S.V.; Smol J.P.

Some factors affecting size distribution and density of grass shrimp (Palaemonetes pugio) populations in two New Jersey estuaries
pp. 231-241(11)
Authors: Bass C.S.; Bhan S.; Smith G.M.; Weis J.S.