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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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one publication added to basket [127355]

The effect of Fucus vesiculosus on the grazing of harpacticoid copepods on diatom biofilms De Troch, M.; Chepurnov, V.A.; Vincx, M.; Ólafsson, E. (2008). The effect of Fucus vesiculosus on the grazing of harpacticoid copepods on diatom biofilms. J. Sea Res. 60(3): 139-143. dx.doi.org/10.1016/j.seares.2008.05.005 In: Journal of Sea Research. Elsevier/Netherlands Institute for Sea Research: Amsterdam; Den Burg. ISSN 1385-1101; e-ISSN 1873-1414, meer

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Beschikbaar in	Auteurs
VLIZ: Open Marine Archive 140417 [ download pdf ]

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Trefwoorden

Algae > Diatoms Biofilms Bacillariophyceae [WoRMS]; Fucus vesiculosus Linnaeus, 1753 [WoRMS]; Fucus vesiculosus Linnaeus, 1753 [WoRMS]; Harpacticoida [WoRMS] Marien/Kust

Author keywords

Harpacticoida; Diatoms; Fucus vesiculosus

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Auteurs		Top
De Troch, M., meer Chepurnov, V.A., meer Vincx, M., meer Ólafsson, E.

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Abstract

The effect of Fucus vesiculosus on the functional traits of three harpacticoid copepod species (Tigriopus brevicornis, Paramphiascella fulvofasciata and Microarthridion littorale) was studied. These copepods are likely to be important grazers on biofilms consisting mainly of diatoms. Several microcosms were created using diatom cultures (Navicula phyllepta and Seminavis robusta) and vegetative thalli of Fucus, with the biofilm associated, collected from the field. The diatoms were enriched in the stable carbon 13C to facilitate tracing in the harpacticoids. The biofilm on the Fucus was labeled through impregnation of the Fucus leaves in 13C enriched seawater. In all treatments a measurable uptake of diatoms was found for the three copepod species. All copepods showed a low uptake of labeled material when only Fucus thalli were available. The grazing on the benthic diatoms was negatively affected by the presence of the Fucus thalli in the case of P. fulvofasciata. One species, T. brevicornis, grazed efficiently both on sedimentary and epiphytic biofilms. We hereby proved experimentally that benthic harpacticoid copepods are able to switch their food uptake under different habitat/food circumstances. This variety of food uptake is an illustration of the so-called ‘niche complementarity effect’ that lies at the basis of diverse communities.

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