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Mesopelagic community structure on the southern Kerguelen Axis

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Trebilco, R ORCID: 0000-0001-9712-8016, Walters, A ORCID: 0000-0002-7166-5689, Melbourne-Thomas, J, Bestley, S, Cox, M, Gastauer, S ORCID: 0000-0001-9676-9946 and Constable, A 2019 , 'Mesopelagic community structure on the southern Kerguelen Axis', in DC Welsford and J Dell and G Duhamel (eds.), The Kerguelen Plateau: marine ecosystem and fisheries. Proceedings of the Second Symposium , Australian Antarctic Division, Kingston, Tasmania, pp. 49-54 .

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Abstract

From January to March 2016, the Antarctic Climateand Ecosystems Corporate Research Centre (ACECRC) led an integrated ecosystem survey voyage onthe Southern Kerguelen Axis (the region spanningBANZARE Bank and the Princess Elizabeth Trough(PET), south toward the Antarctic continental shelfand Prydz Bay). The voyage track spanned 8 850 km,comprised of eight sampling transects, which weredesigned to encompass major environmental transitionsin the area (Figure 1). Overarching goals of thisvoyage were to characterise pelagic food-web structureand major energy pathways in the region, and to pilotmethodologies for future ecosystem observation andmonitoring. A key component of the study was samplingthe mesopelagic community to resolve key drivers ofthe abundance and biomass of major mesopelagic taxa(fishes, crustaceans, squids and gelatinous zooplankton),which are key prey for higher-trophic levels, and representan important alternative energy pathway to krill.

Item Type: Conference Publication
Authors/Creators:Trebilco, R and Walters, A and Melbourne-Thomas, J and Bestley, S and Cox, M and Gastauer, S and Constable, A
Keywords: mesopelagic, community structure, biomass, abundance, Indian Ocean sector, energy pathways
Journal or Publication Title: The Kerguelen Plateau: marine ecosystem and fisheries. Proceedings of the Second Symposium
Publisher: Australian Antarctic Division
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