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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Helgoland marine research 43 (1989), S. 489-499 
    ISSN: 1438-3888
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The mean values on hydrographical parameters in the Wadden Sea of Sylt taken weekly over a period of seven years (1975, 1976 and 1984 to 1988) were compared in order to detect trends in concentrations of nutrients or plankton. An increase in NO2, NO3, PO4 and Si could be found in summer. NH4 showed a negative trend. Corresponding with the rising nutrient-level, Chlorophyll-a and pH show a positive trend. Salinity decreased significantly. Changes in NH4 and NO2 were correlated with rainfall.
    Type of Medium: Electronic Resource
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