Changes in the plankton of the estuarine area of the Haringvliet-Hollands Diep-Biesbosch in the S.W. Netherlands caused by the dams through Volkerak and Haringvliet
Peelen, R. (1974). Changes in the plankton of the estuarine area of the Haringvliet-Hollands Diep-Biesbosch in the S.W. Netherlands caused by the dams through Volkerak and Haringvliet. Hydrobiol. Bull. 8(1-2): 190-200. https://dx.doi.org/10.1007/BF02254919
In: Hydrobiological Bulletin. Netherlands Hydrobiological Society: Amsterdam. ISSN 0165-1404; e-ISSN 2214-708X, more
Also appears in:(1974). Proceedings of the International Symposium on Ecology and Physiology of the Brackish Environment, Amsterdam, September 4-7, 1973. Organized by the Netherlands Hydrobiological Society in honour of the Dutch hydrobiologist Dr. H.C. Redeke (1873-1945). Hydrobiological Bulletin, 8(1-2). Netherlands Hydrobiological Society: Amsterdam. 252 pp., more
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| Abstract |
(1) Owing to its, partially, man-made character, the former Hollands Diep-Haringvliet area was a digital estuary with rather unique characters. The ß-mesohaline protruded beyond the coast line. The fairly large, glacier-fed Rhine discharge in summer reduces the residual times in this estuary to low values, with a poor development of the plankton as a result. 2) After the closure of the Volkerak and the Haringvliet (1970) residual times increased to 30–40 days in summer and in 1971 a diatom plankton, with Asterionella Formosa and Fragillaria crotonensis developed. In 1972 the blue-green algae Microcystis aeruginosa and Aphanizomenon flos-aquae made their entrance. (3) Developments of biota within the biotope are in full progress at the moment, and, in view of the heavy phosphate level, blue-green algae stand a good chance to dominate the plankton, as they already do in Lake Brielle. |
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