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.

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Basisinformatie over ‘Open Access to scholarly information'.

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one publication added to basket [130045]

Distribution, abundance and ecological relevance of pelagic fishes in the Lazarev Sea, Southern Ocean Flores, H.; Van De Putte, A.P.; Siegel, V.; Pakhomov, E.A.; van Franeker, J.A.; Meesters, H.W.G.; Volckaert, F.A.M. (2008). Distribution, abundance and ecological relevance of pelagic fishes in the Lazarev Sea, Southern Ocean. Mar. Ecol. Prog. Ser. 367: 271-282. dx.doi.org/10.3354/meps07530 In: Marine Ecology Progress Series. Inter-Research: Oldendorf/Luhe. ISSN 0171-8630; e-ISSN 1616-1599, meer

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Beschikbaar in	Auteurs
VLIZ: Open Marine Archive 143536 [ download pdf ]

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Trefwoorden

Abundance Composition > Community composition Developmental stages > Larvae > Fish larvae Distribution Energy Fisheries > Marine fisheries > Pelagic fisheries Food webs Sea surface temperature Copepoda [WoRMS]; Electrona antarctica (Günther, 1878) [WoRMS]; Euphausia superba Dana, 1850 [WoRMS]; Euphausiacea [WoRMS]; Euphausiidae Dana, 1850 [WoRMS]; Myctophidae Gill, 1893 [WoRMS]; Pisces [WoRMS]; Pleuragramma antarcticum Boulenger, 1902 [WoRMS] PS, Zuidelijke Oceaan [Marine Regions]; PSW, Lazarev Sea Marien/Kust

Author keywords

Antarctic; Southern Ocean; Fish abundance; Fish ecology; Fish larvae; Energy; Food web

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Auteurs		Top
Flores, H., meer Van De Putte, A.P., meer Siegel, V. Pakhomov, E.A.	van Franeker, J.A. Meesters, H.W.G., meer Volckaert, F.A.M., meer

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Abstract

The distribution and abundance of larval and postlarval fishes was investigated in the Lazarev Sea, Southern Ocean, in March and April 2004. The upper 200 m of the water column were sampled with an 8 m2 rectangular midwater trawl at 93 stations. The larval species community clustered in a diverse coastal community with high densities of Antarctic silverfish Pleuragramma antarcticum larvae and a less diverse offshore community dominated by Antarctic jonasfish Notolepis coatsi and the lanternfish Electrona antarctica. No postlarval fish were caught in coastal areas. The offshore community of postlarval fishes consisted of the deep-sea smelt Bathylagus antarcticus, and the lanternfishes Gymnoscopelus braueri, G. nicholsi and E. antarctica. The latter species clearly dominated, occurring at mean individual and wet mass densities of 0.17 individuals m–2 and 0.26 g m–2, respectively. A generalized additive model significantly related the density of postlarval E. antarctica to the abundance of Antarctic krill Euphausia superba, ocean depth and sea surface temperature. The diet of E. antarctica was dominated by copepods and euphausiid larvae. Mean energy density of E. antarctica in the upper 200 m was 2.8 kJ m–2, which is equivalent to 36% of the energy stored in Antarctic krill stocks and probably would be considerably higher if a greater depth range were considered. This suggests that E. antarctica is a major energy transmitter in the food web of the Lazarev Sea, challenging the classical krill-dominated food web paradigm of the Southern Ocean.

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