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From data compilation to model validation: a comprehensive analysis of a full deep-sea ecosystem model of the Chatham Rise

Citation

McGregor, VL and Horn, PL and Fulton, EA and Dunn, MR, From data compilation to model validation: a comprehensive analysis of a full deep-sea ecosystem model of the Chatham Rise, PeerJ, 7 Article e6517. ISSN 2167-8359 (2019) [Refereed Article]


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Copyright Statement

Copyright 2019 McGregor et al. Licensed under Creative Commons Attribution 4.0 International (CC BY 4.0) https://creativecommons.org/licenses/by/4.0/

DOI: doi:10.7717/peerj.6517

Abstract

The Chatham Rise is a highly productive deep-sea ecosystem that supports numerous substantial commercial fisheries, and is a likely candidate for an ecosystem based approach to fisheries management in New Zealand. We present the first end-to-end ecosystem model of the Chatham Rise, which is also to the best of our knowledge, the first end-to-end ecosystem model of any deep-sea ecosystem. We describe the process of data compilation through to model validation and analyse the importance of knowledge gaps with respect to model dynamics and results. The model produces very similar results to fisheries stock assessment models for key fisheries species, and the population dynamics and system interactions are realistic. Confidence intervals based on bootstrapping oceanographic variables are produced. The model components that have knowledge gaps and are most likely to influence model results were oceanographic variables, and the aggregate species groups ‘seabird’ and ‘cetacean other’. We recommend applications of the model, such as forecasting biomasses under various fishing regimes, include alternatives that vary these components.

Item Details

Item Type:Refereed Article
Keywords:ecosystem modelling, Chatham Rise, validation, end-to-end, fisheries, deep sea, Atlantis
Research Division:Environmental Sciences
Research Group:Ecological Applications
Research Field:Ecosystem Function
Objective Division:Animal Production and Animal Primary Products
Objective Group:Fisheries - Wild Caught
Objective Field:Wild Caught Fin Fish (excl. Tuna)
UTAS Author:Fulton, EA (Dr Elizabeth Fulton)
ID Code:131644
Year Published:2019
Web of Science® Times Cited:3
Deposited By:Directorate
Deposited On:2019-03-28
Last Modified:2019-06-11
Downloads:2 View Download Statistics

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