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Published (Version of record)CC BY V4.0, Open Access
Published (Version of record)CC BY V4.0, Open
Journal article
An analytical solution to ecosystem based FMSY using trophic transfer efficiency of prey consumption to predator biological production
PLOS ONE, Vol.17(11), e0276370
Spring 2022
PMID: 36355918
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Source: InCites
Abstract
A theoretical basis for Ecosystem-based Fisheries Management (EBFM) was derived for pelagic fish by applying marine ecology theory of analytical relationships of predator-prey biological production transfers between trophic levels to FAO guidelines for an ecosystem approach to fisheries. The aim is to describe a simple method for data-limited fisheries to estimate ecosystem-based F MSY and how EBFM modellers could mimic the way natural fish communities function for maintaining ecological processes of biological production, biomass and ecosystem stability. Ecosystem stability (ES) F MSY were estimated by proportion of biological production allocated to predators, giving ES F MSY of 0.23 for small pelagic and 0.27 for pelagic finfish, prioritising ecosystem over economics. To maintain both stability and bio-mass (SB) a full pelagic EBFM SB F MSY of about 0.08 was obtained for both small pelagic and pelagic finfish, having mostly ecosystem considerations. As the F MSY are single-species averages of catchable species targeted in a specific trophic level, multispecies fishing mor-talities were proportioned by the biological production of each species in the trophic level. This way catches for each species are consistent with the average ecosystem F MSY for a trophic level. The theoretical estimates gave similar results to other fisheries for sustainable fish catches that maintain the fishery ecosystem processes. They were also tested using six tropical Ecopath Models and showed the effects of imposing commercial fishing mortalities on predominantly EBFM conditions. The ecosystem stability ES F MSY is suggested to be investigated for sustainable fish catches and the full EBFM SB F MSY for protected areas or recovery of heavily depleted stocks.
Details
- Title
- An analytical solution to ecosystem based FMSY using trophic transfer efficiency of prey consumption to predator biological production
- Creators
- Bruce Hodgson - Southern Cross University, Faculty of Science and Engineering
- Publication Details
- PLOS ONE, Vol.17(11), e0276370
- Publisher
- Public Library of Science
- Identifiers
- 991013059213802368
- Copyright
- Copyright: © 2022 Bruce R. Hodgson. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
- Academic Unit
- Faculty of Science and Engineering
- Language
- English
- Resource Type
- Journal article