|Production of Crangon crangon in the tidal zone of the Dutch Wadden Sea|
Kuipers, B.; Dapper, R. (1981). Production of Crangon crangon in the tidal zone of the Dutch Wadden Sea. Neth. J. Sea Res. 15(1): 33-53
In: Netherlands Journal of Sea Research. Netherlands Institute for Sea Research (NIOZ): Groningen; Den Burg. ISSN 0077-7579, more
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The density and size of shrimps on an extensive tidal flat in the western Wadden Sea was followed through 4 successive years. The population consists of juvenile shrimps (<35 mm) that enter the area in May and remain in the tidal zone till October-Nobember. During these months there is a constant shift of shrimps that reached a length of 30 to 35 mm towards the subtidal, whereas at the same time new larvae setlle on the tidal flats throughout the warmer part of the year with peak setllement during May and June. Shrimps that did not reach 30 to 35 mm by October do enter the tidal zone again the next spring. With aid of independant growth data the production of juvenile shrimps in the tidal zone was estimated at 2.35 g ADW .m -2. a-1, of which about 60% is consumed within the area by crabs and fishes. The average food consumption of the juvenile shrimps was estimated at 6.7 g ADW .m-2.a-1, which makes them the most important carnivore population of the Wadden Sea's tidal area.