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Big things come in small packages. Biomass contribution of the krill Thysanoessa macrura to the marine ecosystem in the Kerguelen Plateau region

Citation

Wallis, JR and Kawaguchi, S and Matsuno, K and Swadling, KM, Big things come in small packages. Biomass contribution of the krill Thysanoessa macrura to the marine ecosystem in the Kerguelen Plateau region, The Kerguelen Plateau: marine ecosystem and fisheries. Proceedings of the Second Symposium, November 2017, Hobart, Tasmania, pp. 55-58. ISBN 9781876934309 (2019) [Refereed Conference Paper]


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Official URL: http://heardisland.antarctica.gov.au/research/kerg...

Abstract

Southern Ocean krill (Thysanoessa macrura) are a small and abundant species of krill in the Southern Ocean. It is considered the second most abundant krill species, with Antarctic krill (Euphausia superba) the biomass dominant species in Antarctic waters (Makarov, 1979; Hosie, 1991; Nordhausen, 1992). Euphausia superba is generally found south of the Polar Front, while T. macrura has a range that extends from the Antarctic coast to north of the sub-Antarctic front (Kirkwood, 1982; Cuzin-Roudy, et al. 2014). Consequently, T. macrura is likely the second most abundant euphausiid in the Antarctic, however estimates of its abundance in the Southern Ocean are largely lacking. Thysanoessa macrura play a vital role in the diet of many flying seabirds, fish and penguins. In the sub-Antarctic, the dietary contribution of T. macrura outweighs the contribution of other krill species and forms up to 80% of the diet of some sub-Antarctic bird species (Raymond et al., 2011).

Item Details

Item Type:Refereed Conference Paper
Keywords:krill, biomass estimates, Kerguelen Plateau, carbon, calyptopis, furcilia
Research Division:Biological Sciences
Research Group:Ecology
Research Field:Marine and Estuarine Ecology (incl. Marine Ichthyology)
Objective Division:Environment
Objective Group:Climate and Climate Change
Objective Field:Effects of Climate Change and Variability on Australia (excl. Social Impacts)
UTAS Author:Wallis, JR (Mr Jake Wallis)
UTAS Author:Kawaguchi, S (Dr So Kawaguchi)
UTAS Author:Swadling, KM (Dr Kerrie Swadling)
ID Code:134316
Year Published:2019
Deposited By:Ecology and Biodiversity
Deposited On:2019-08-07
Last Modified:2019-09-12
Downloads:0

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