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Copepods link quahog growth to climate
Witbaard, R.; Jansma, E.; Klaassen, U.S. (2003). Copepods link quahog growth to climate. J. Sea Res. 50(1): 77-83.
In: Journal of Sea Research. Elsevier/Netherlands Institute for Sea Research: Amsterdam; Den Burg. ISSN 1385-1101, more
Peer reviewed article  

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    Climate; Food availability; Growth; Interspecific relationships; Size; Time series; Arctica islandica (Linnaeus, 1767) [WoRMS]; Copepoda [WoRMS]; ANE, North Sea [Marine Regions]; Marine

Authors  Top 
  • Witbaard, R., more
  • Jansma, E.
  • Klaassen, U.S.

    From samples collected in 1983, 1991 and 2000, a long-term growth record for the bivalve Arctica islandica from the northern North Sea was constructed with methods derived from dendrochronology. Subsequent response-function analyses demonstrated that shell growth was mainly influenced by the abundance of copepods as recorded by the CPR survey. In years with dense copepod populations a major part of the downward flux of food particles is intercepted by the copepods before it reaches the seafloor. This may lead to a shortage of food for A. islandica resulting in a depression of shell growth. Although the abundance of copepods in the northern North Sea is linked to climate there is only a weak statistical relation between shell growth and climate.

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