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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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Seasonal carbon distribution of copepods in the eastern Weddell Sea, Antarctica Schnack-Schiel, S.B.; Hagen, W.; Mizdalski, E. (1998). Seasonal carbon distribution of copepods in the eastern Weddell Sea, Antarctica. J. Mar. Syst. 17(1-4): 305-311. https://dx.doi.org/10.1016/S0924-7963(98)00045-1 In: Journal of Marine Systems. Elsevier: Tokyo; Oxford; New York; Amsterdam. ISSN 0924-7963; e-ISSN 1879-1573, meer Ook verschenen in: Le Fèvre, J.; Tréguer, P. (Ed.) (1998). Carbon Fluxes and Dynamic Processes in the Southern Ocean: Present and Past. Selected papers from the International JGOFS Symposium, Brest, France, 28-31 August 1995. Journal of Marine Systems, 17(1-4). Elsevier: Amsterdam. 1-619 pp., meer

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Beschikbaar in	Auteurs
VLIZ: Non-open access 288517 [ aanvragen ]

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Trefwoorden

Aquatic communities > Plankton > Zooplankton Cycles > Life cycle Distribution > Geographical distribution > Vertical distribution Fauna > Aquatic organisms > Aquatic animals > Shellfish > Marine organisms > Marine crustaceans Organic matter > Carbon > Organic carbon Population characteristics > Biomass Profiles > Vertical profiles Taxa > Species > Dominant species Temporal variations > Periodic variations > Seasonal variations Calanoides acutus (Giesbrecht, 1902) [WoRMS]; Calanus propinquus Brady, 1883 [WoRMS]; Copepoda [WoRMS]; Euchaeta antarctica Giesbrecht, 1902 [WoRMS]; Metridia gerlachei Giesbrecht, 1902 [WoRMS]; Microcalanus pygmaeus (Sars G.O., 1900) [WoRMS] PSW, Weddell Sea [Marine Regions] Marien/Kust

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Schnack-Schiel, S.B. Hagen, W. Mizdalski, E.

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Abstract

Copepods were sampled by a multiple opening-closing net in the eastern Weddell Sea during various seasons (late winter/early spring, summer, autumn). Total copepod biomass integrated over the upper 1000 m varied seasonally between 1.7 mg C m−3 in late winter/early spring and 3.7 mg C m−3 in autumn. After the dark season the copepods were rather evenly distributed vertically and highest biomass levels were found in the mid-water layers between about 200 m and 500 m. By contrast, especially in summer but also in autumn copepod biomass concentrated in the uppermost water layer. A total of 64 calanoid species were identified in the upper 1000 m with maximum species numbers in the deepest layer. The large calanoids Calanus propinquus, Calanoides acutus, Metridia gerlachei, Euchaeta antarctica and the small calanoid Microcalanus pygmaeus prevailed and accounted for 60–70% of total copepod biomass, while the small poecilostomatoid Oncaea and the cyclopoid Oithona species comprised about 20%. Hence, the distribution pattern of the entire copepod biomass is strongly influenced by the life cycles of a few dominant species.

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