Open WL Archief (OWA)

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Het OWA, het open archief van het Waterbouwkundig Laboratorium heeft tot doel alle vrij toegankelijke onderzoeksresultaten van dit instituut in digitale vorm aan te bieden. Op die manier wil het de zichtbaarheid, verspreiding en gebruik van deze onderzoeksresultaten, alsook de wetenschappelijke communicatie maximaal bevorderen.

Dit archief wordt uitgebouwd en beheerd volgens de principes van de Open Access Movement, en het daaruit ontstane Open Archives Initiative.

Basisinformatie over ‘Open Access to scholarly information'.

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Expected changes in the Wadden Sea benthos in a warmer world: lessons from periods with mild winters Beukema, J.J. (1992). Expected changes in the Wadden Sea benthos in a warmer world: lessons from periods with mild winters. Neth. J. Sea Res. 30: 73-79. https://dx.doi.org/10.1016/0077-7579(92)90047-I In: Netherlands Journal of Sea Research. Netherlands Institute for Sea Research (NIOZ): Groningen; Den Burg. ISSN 0077-7579; e-ISSN 1873-1406, meer Ook verschenen in: Heip, C.H.R.; Nienhuis, P.H.; Pollen-Lindeboom, P.R. (Ed.) (1992). Proceedings of the 26th European Marine Biology Symposium: Biological effects of disturbances on estuarine and coastal marine environments, 17-21 September 1991, Yerseke, The Netherlands. European Marine Biology Symposia, 26. Netherlands Journal of Sea Research, 30. 299 pp., meer

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Beukema, J.J., meer

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Abstract

Changes observed in the macrozoobenthos at tidal flats in the westernmost part of the Wadden Sea during the 1969-1991 period were used to evaluate effects of mild winters. At least one third of the macrobenthic species in this area is sensitive to low winter temperatures. This has resulted in higher species richness and higher abundance of these species following mild as opposed to normal or cold winters. Negative effects of mild winters include greater weight loss in all bivalves during the winter and low reproductive success in the subsequent summer for various important (bivalve) species. A recent series of three mild winters in close succession (1988-1990, including the two mildest of the century) had profound effects: repeated recruitment failure in the bivalves Mya arenaria and the heavily fished Mytilus edulis and Cerastoderma edule resulted in low standing stocks of these species in the course of 1990. Effects were noted on algal stocks (elevation), other bivalves (higher weights) and predators (food shortage); problems arose particularly in the mussel and cockle fisheries as well as among the eiders (Somateria mollissima).

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