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.

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one publication added to basket [62730]

Interspecific and intraspecific variation of δ13C and δ15N in deposit- and suspension-feeding bivalves (Macoma balthica and Cerastoderma edule): evidence of ontogenetic changes in feeding mode of Macoma balthica Rossi, F.; Herman, P.M.J.; Middelburg, J.J. (2004). Interspecific and intraspecific variation of δ13C and δ15N in deposit- and suspension-feeding bivalves (Macoma balthica and Cerastoderma edule): evidence of ontogenetic changes in feeding mode of Macoma balthica. Limnol. Oceanogr. 49(2): 408-414 In: Limnology and Oceanography. American Society of Limnology and Oceanography: Waco, Tex., etc. ISSN 0024-3590; e-ISSN 1939-5590, meer

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Beschikbaar in	Auteurs
VLIZ: Open access 247144 [ download pdf ]

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Trefwoorden

Algae Aquatic communities > Benthos > Phytobenthos Aquatic communities > Plankton > Phytoplankton Behaviour > Feeding behaviour Biogeny > Ontogeny Composition > Chemical composition > Food composition Food webs Isotopes > Carbon isotopes Isotopes > Nitrogen isotopes Population dynamics Suspension Cerastoderma edule (Linnaeus, 1758) [WoRMS]; Macoma balthica (Linnaeus, 1758) [WoRMS] ANE, Nederland, Westerschelde [Marine Regions] Marien/Kust

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Auteurs		Top
Rossi, F., meer Herman, P.M.J., meer Middelburg, J.J., meer

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Abstract

Deposit and suspension feeders can switch feeding behavior and show variations in feeding mode as individuals pass through life-cycle stages. Stable carbon and nitrogen isotopes were used to trace changes in diet of the tellinid bivalves M. balthica facultative deposit feeder) and C. edule (obligatory suspension feeder), according to their size class. Analyses of variance showed differences in the δ13C between the species. C. edule showed a diet composed of microphytoplankton, whereas M. balthica could feed on a mixed diet of microalgae from benthos and plankton. Values of δ13C depended significantly on body size in M. balthica, providing evidence of ontogenetic variation in diet with small juveniles feeding entirely on microphytobenthos, while there was a gradual tendency for larger sizes to feed more on microphytoplankton. Therefore, although these species rely on different sources of food, large animals of M. balthica can overlap the trophic niche of C. edule. Population dynamics of the animals should be considered in food-web studies.

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