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Changes in seasonal succession of phytoplankton induced by the storm-surge barrier in the Oosterschelde (S.W. Netherlands)
Bakker, C.; Herman, P.M.J.; Vink, M. (1990). Changes in seasonal succession of phytoplankton induced by the storm-surge barrier in the Oosterschelde (S.W. Netherlands). J. Plankton Res. 12(5): 947-972
In: Journal of Plankton Research. Oxford University Press: New York,. ISSN 0142-7873; e-ISSN 1464-3774, meer
Peer reviewed article  
Beschikbaar in  Auteurs 
Trefwoorden
    Netherlands, Grevelingen L.
    Grevelingen [Marine Regions]
    Marien/Kust; Brak water
Auteurs  Top 
  • Bakker, C.
  • Herman, P.M.J.
  • Vink, M.
Abstract
    Seasonal succession of the phytoplankton was followed weekly in the eastern and western parts of the Oosterschelde Estuary, before (1982-1983) and during (1984-1986) the construction of the storm-surge barrier. Construction of the barrier seriously influenced the hydrodynamics of the estuary. In the eastern part, decreased current velocities led to the emergence of a vertical salinity gradient, to an increasing sedimentation of suspended matter and to a rise in transparency during a prolonged period of the year. The relationship between species composition and biomass on the one hand and environmental variables on the other hand was analysed in a Canonical Correspondence Analysis, for both compartments separately. The analysis revealed that the phytoplankton assemblage more and more obtained a summer character, extending its growth season both earlier and later in the year. The transition of spring to summer phytoplankton assemblages proceeded parallel to the main light-turbidity gradient. The factor light did not only explain the seasonal pattern, but also the long-term trend from pre-barrier to barrier period.
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