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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.
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Occurrence of Hydromedusae in the plankton off Northumberland (western central North Sea) and the role of planktonic predators
Nicholas, K.R.; Frid, C.L.J. (1999). Occurrence of Hydromedusae in the plankton off Northumberland (western central North Sea) and the role of planktonic predators. J. Mar. Biol. Ass. U.K. 79(6): 979-992
In: Journal of the Marine Biological Association of the United Kingdom. Cambridge University Press/Marine Biological Association of the United Kingdom: Cambridge. ISSN 0025-3154; e-ISSN 1469-7769, meer
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| Auteurs | | Top |
- Nicholas, K.R.
- Frid, C.L.J., meer
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| Abstract |
The pattern of occurrence of medusae off the north-east coast of England are described for the period 1990–1996. The predatory role of the medusae, Aglanthadigitale, was examined by comparison of estimated predation rates with those of other planktonic predators. Aglanthedigitale was found to have the potential to considerably reduce copepod abundances, particularly in winter. Other important predators were the amphipod Themistocompressa and the chaetognath Sagittaelegans. There was a great deal of seasonal and interannual variability in predatory impact, with predators such as Pleurobrachiapileus and Meganyctiphanesnorvegica occasionally exerting a high predatory impact. Previous studies have identified an important community structuring role for predation in winter in this area, this study shows that planktonic predators can influence copepod abundances throughout the year.' |
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