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A mass-balanced ecosystem model for the Kerguelen Plateau

Citation

Subramaniam, RS and Pinkerton, MH and Melbourne-Thomas, J and Corney, SP and Swadling, KM and Pruvost, P, A mass-balanced ecosystem model for the Kerguelen Plateau, The Kerguelen Plateau: marine ecosystem and fisheries. Proceedings of the Second Symposium, November 2017, Hobart, Tasmania, pp. 81-91. ISBN 9781876934309 (2019) [Refereed Conference Paper]


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Copyright Statement

Copyright 2017 The Department of the Environment and Energy, Australian Antarctic Division

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

Abstract

Ecosystem models are useful tools for making informed management decisions regarding the potential effects of environmental change and fishing activity on Southern Ocean ecosystems. Recent work has successfully updated an existing Ecopath model for the Kerguelen exclusive economic zone from an unbalanced to a balanced model state (where energy inputs equal outputs). This balanced model details food-web dynamics in the Kerguelen Island region using species biomass and diet information. In this paper we present this balanced model as well as an evaluation of food-web structure and function using tools found in Ecopath. Energy flows in the model suggest that the Kerguelen Island food web is smaller and more mature than other sub-Antarctic food webs and the impacts of direct and indirect interactions on functional groups highlighted the importance of cephalopods in the food web. This model is currently undergoing an expansion to include the entire northern region of the Kerguelen Plateau.

Item Details

Item Type:Refereed Conference Paper
Keywords:Kerguelen Plateau, Ecopath, ecosystem model, food web, fishing
Research Division:Biological Sciences
Research Group:Ecology
Research Field:Marine and Estuarine Ecology (incl. Marine Ichthyology)
Objective Division:Environment
Objective Group:Ecosystem Assessment and Management
Objective Field:Ecosystem Assessment and Management of Antarctic and Sub-Antarctic Environments
UTAS Author:Subramaniam, RS (Miss Roshni Subramaniam)
UTAS Author:Melbourne-Thomas, J (Dr Jessica Melbourne-Thomas)
UTAS Author:Corney, SP (Dr Stuart Corney)
UTAS Author:Swadling, KM (Associate Professor Kerrie Swadling)
ID Code:134699
Year Published:2019
Deposited By:Oceans and Cryosphere
Deposited On:2019-08-29
Last Modified:2019-10-23
Downloads:1 View Download Statistics

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