Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 368964
Title Distribution, abundance and ecological relevance of pelagic fishes in the Lazarev Sea, Southern Ocean
Author(s) Florentino De Souza Silva, A.P.; Putte, A.P. van de; Siegel, V.; Pakhomov, E.A.; Franeker, J.A. van; Meesters, H.W.G.; Colckaert, F.A.M.
Source Marine Ecology Progress Series 367 (2008). - ISSN 0171-8630 - p. 271 - 282.
DOI https://doi.org/10.3354/meps07530
Department(s) Wageningen Marine Research
Publication type Refereed Article in a scientific journal
Publication year 2008
Keyword(s) antarctic mesopelagic fishes - marine food-web - nw weddell sea - euphausia-superba - shetland islands - proximate composition - community structure - foraging behavior - feeding ecology - open waters
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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