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Long-term field observations on seasonality in chlorophyll-a concentrations in a shallow coastal marine ecosystem, the Wadden Sea Philippart, C.J.M.; van Iperen, J.M.; Cadée, G.C. (2010). Long-term field observations on seasonality in chlorophyll-a concentrations in a shallow coastal marine ecosystem, the Wadden Sea. Est. Coast. 33(2): 286-294. http://dx.doi.org/10.1007/s12237-009-9236-y In: Estuaries and Coasts. Estuarine Research Federation: Port Republic, Md.. ISSN 1559-2723; e-ISSN 1559-2731

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Beschikbaar in	Auteurs
VLIZ: Open Marine Archive 158057 [ download pdf ]

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Trefwoorden

ANE, Wadden Sea Aquatic communities > Plankton > Phytoplankton Coastal environments Ecosystems Organic compounds > Carbohydrates > Glycosides > Pigments > Photosynthetic pigments > Chlorophylls Phenology Waddenzee [Marine Regions] Marien/Kust

Author keywords

Long-term dynamics; Phytoplankton; Chlorophyll-a; Phenology; Coastalmarine ecosystems

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Auteurs		Top
Philippart, C.J.M. van Iperen, J.M. Cadée, G.C.

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Abstract

Analyses of long-term field observations (1974–2007) on chlorophyll-a concentrations in the western Wadden Sea showed no long-term trends in the timing of the wax and wane of phytoplankton spring blooms. There is weak evidence, however, that the height of the autumn bloom has decreased since the early 1990s. This fading of the autumn bloom may have had consequences for the carbon transfer to higher trophic levels, currently hampering primary consumer species that mostly rely on food supply during late summer. Current and other findings suggest a shortening of the growing season due to the fading of the autumn bloom in the Wadden Sea and a lengthening of the growing season due to an advancement of the spring bloom in the North Sea. These regionally different changes in seasonality may have contributed to the coinciding decrease in bivalve filtering capacity in the western Wadden Sea and the large-scale offshore shift of juvenile plaice from the Wadden Sea to the adjacent North Sea.

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