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Seasonality of the pelagic ichthyofauna in the Lazarev Sea Van de Putte, A.; Flores, H.; Risch, S.; Volckaert, F.A.M.J. (2007). Seasonality of the pelagic ichthyofauna in the Lazarev Sea, in: Mees, J. et al. (Ed.) VLIZ Young Scientists' Day, Brugge, Belgium 2 March 2007: book of abstracts. VLIZ Special Publication, 39: pp. 59 In: Mees, J.; Seys, J. (Ed.) (2007). VLIZ Young Scientists' Day, Brugge, Belgium 2 March 2007: book of abstracts. VLIZ Special Publication, 39. Vlaams Instituut voor de Zee (VLIZ): Oostende. IX, 82 pp., meer In: VLIZ Special Publication. Vlaams Instituut voor de Zee (VLIZ): Oostende. ISSN 1377-0950, meer

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Beschikbaar in	Auteurs
VLIZ: Open access 118330 [ download pdf ]
Documenttype: Samenvatting

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Trefwoorden

Developmental stages > Larvae > Fish larvae Periodicity > Seasonality Electrona antarctica (Günther, 1878) [WoRMS] PSW, Lazarev Sea Marien/Kust

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Auteurs		Top
Van de Putte, A., meer Flores, H., meer Risch, S. Volckaert, F.A.M.J., meer

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Abstract

The Southern Ocean is characterised by an extreme seasonality which is best observed by the huge variation in sea ice extent. It expands from a minimum extent of 4 million square kilometres in February to a maximum of 19 million square kilometres in September and influences the physics and chemistry of the surface layers and the corresponding life histories of organisms. Reduced light condition and sea ice cover have a pronounced impact on primary production and predation risk in the pelagic zone. Here we present comparison of the distribution of fish in the Lazarev Sea correlated to biotic an abiotic features. Samples were collected in the framework of three LAKRIS (Lazarev Krill Study) campaigns onboard RV Polarstern during summer, fall and winter. The main focus was on factors affecting krill distribution. As such a wide variety of biotic and abiotic measures were made. Fish and fish larvae were collected from trawls from the upper 200m during both seasons. Both during summer and winter larval composition was dominated by pre-metamorphic Electrona antarctica and Notolepis coatsi. Post-metamorphic E. antarctica showed a pronounced seasonal difference in occurrence.

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