Responses of ecological indicators to fishing pressure under environmental change: exploring non-linearity and thresholds
Type | Article | ||||||||||||
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Date | 2020-07 | ||||||||||||
Language | English | ||||||||||||
Author(s) | Fu Caihong1, Xu Yi2, Grüss Arnaud3, Bundy Alida4, Shannon Lynne5, 6, Heymans Johanna J7, 8, Halouani Ghassen![]() |
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Affiliation(s) | 1 : Pacific Biological Station, Fisheries and Oceans Canada, 3190 Hammond Bay Road, Nanaimo, BC V9T 6N7, Canada 2 : Fraser River and Interior Area Stock Assessment, Fisheries and Oceans Canada, 3-100 Annacis Parkway, Delta, BC V3M 6A2, Canada 3 : School of Aquatic and Fishery Sciences, University of Washington, Box 355020, Seattle, WA 98105-5020, USA 4 : Bedford Institute of Oceanography, Fisheries and Oceans Canada, PO Box 1006, Dartmouth, NS B2Y 4A2, Canada 5 : Department of Biological Sciences, University of Cape Town, Private Bag X3, Rondebosch 7701, South Africa 6 : Marine Research Institute, University of Cape Town, Private Bag X3, Rondebosch 7701, South Africa 7 : European Marine Board, Wandelaarkaai 7, Oostende 8400, Belgium 8 : Scottish Association for Marine Science, Scottish Marine Institute, Oban, Argyll PA371QA, UK 9 : Marine and Freshwater Research Centre (MFRC), Galway-Mayo Institute of Technology (GMIT), Dublin Road, Galway, Ireland 10 : Institute of Marine Sciences, Middle East Technical University, PO Box 28, Erdemli 33731, Turkey 11 : Lowestoft Laboratory, Centre for Environment, Fisheries and Aquaculture Science (Cefas), Pakefield Road, Lowestoft, Suffolk NR33 0HT, UK 12 : Institute of Marine Science (ICM-CSIC), Passeig Maritim de la Barceloneta, n° 37-49, 08003 Barcelona, Spain 13 : Ecopath International Initiative Research Association, Mestre Nicolau 8, Bellaterra, 08193 Barcelona, Spain 14 : CSIRO Oceans & Atmosphere, GPO Box 1538, Hobart, TAS 7001, Australia 15 : Centre for Marine Socioecology, University of Tasmania, Hobart, TAS 7000, Australia 16 : Institut de Recherche pour le Développement, MARBEC (IRD, University Montpellier, Ifremer, CNRS), Montpellier, France |
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Source | Ices Journal Of Marine Science (1054-3139) (Oxford University Press (OUP)), 2020-07 , Vol. 77 , N. 4 , P. 1516-1531 | ||||||||||||
DOI | 10.1093/icesjms/fsz182 | ||||||||||||
WOS© Times Cited | 13 | ||||||||||||
Keyword(s) | ecosystem-based fisheries management, generalized additive model, marine ecosystem model, non-linear response, primary productivity | ||||||||||||
Abstract | Marine ecosystems are influenced by multiple stressors in both linear and non-linear ways. Using generalized additive models (GAMs) fitted to outputs from a multi-ecosystem, multi-model simulation experiment, we investigated 14 major ecological indicators across ten marine ecosystems about their responses to fishing pressure under: (i) three different fishing strategies (focusing on low-, high-, or all-trophic-level taxa); and (ii) four different scenarios of directional or random primary productivity change, a proxy for environmental change. From this work, we draw four major conclusions: (i) responses of indicators to fishing mortality in shapes, directions, and thresholds depend on the fishing strategies considered; (ii) most of the indicators demonstrate decreasing trends with increasing fishing mortality, with a few exceptions depending on the type of fishing strategy; (iii) most of the indicators respond to fishing mortality in a linear way, particularly for community and biomass-based indicators; and (iv) occurrence of threshold for non-linear-mixed type (i.e. non-linear with inflection points) is not prevalent within the fishing mortality rates explored. The conclusions drawn from the present study provide a knowledge base in indicators’ dynamics under different fishing and primary productivity levels, thereby facilitating the application of ecosystem-based fisheries management worldwide. |
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