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Enige aspecten van de fosforcyclus in de Nederlandse Waddenzee
De Jonge, V.N. (1972). Enige aspecten van de fosforcyclus in de Nederlandse Waddenzee. NIOZ-rapport, 1972(9). Nederlands Instituut voor Onderzoek der Zee: Texel. 21 pp.
Part of: NIOZ-rapport. Netherlands Institute for Sea Research (NIOZ): Den Burg. ISSN 0923-3210
Peer reviewed article  
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Keyword
    Marine/Coastal
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  • De Jonge, V.N.
Abstract
    During the period July 1970- July 1971 phosphorus concentrations (phosphate, dissolved organic phosphorus and phosphorus in suspended matter) are measured on 64 stations in the Dutch Wadden Sea between Den Helder and the Eems. Phosphate concentrations were in general much higher than in the North Sea. Highest concentrations occur in summer in the inner parts as a result of accumulation and mineralisation of organic material. In winter differences are small. Phosphate concentrations increased 3x since 1950 parallel to a similar increase in the river Rhine. Over the same period the suspended matter, measured by its P contents, doubled. Very low phosphate values are only found in Spring and Summer between the islands Vlieland and Terschelling where phosphorus probably becomes limiting for plankton growth.
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