The distribution of Actinocyclus normanii (Bacillariophyceae) in estuaries: field observations and laboratory investigations
Rehbehn, R.; Schuchardt, B.; Schirmer, M.; Kirst, G.O. (1993). The distribution of Actinocyclus normanii (Bacillariophyceae) in estuaries: field observations and laboratory investigations. Neth. J. Aquat. Ecol. 27(2-4): 205-214. https://dx.doi.org/10.1007/BF02334784
In: Netherlands Journal of Aquatic Ecology. Kluwer Academic Publishers/Netherlands Society of Aquatic Ecology: Bilthoven. ISSN 1380-8427; e-ISSN 2214-7098, meer
Ook verschenen in:
Meire, P.; Vincx, M. (Ed.) (1993). Marine and estuarine gradients: ECSA 21: Proceedings of the 21st symposium of the Estuarine and Coastal Sciences Association held in Gent, 9-14 september 1991. Netherlands Journal of Aquatic Ecology, 27(2-4). Netherlands Society of Aquatic Ecology: Bilthoven. 496 pp., meer
Combining the results of field observations from the Eider, Elbe, Weser and Ems estuaries and laboratory experiments it was found that: 1) in German North Sea estuaries the tidal freshwater reaches are the main habitat of the diatom Actinocyclus normanii;2) the residence time within the tidal freshwater reaches is a key factor controlling not only seasonal and spatial densities within one estuary, but also density differences between estuaries; 3) A. normanii is well adapted to strongly changing light situations and thus adapted to estuaries with high vertical turbulent mixing and low values of Zeu/Zmix; 4) the downstream limit of the habitat of A. normanii is mainly determined by light limitation rather than by hyperosmotic stress.
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