Evaluating Ecosystem‐Based Reference Points for Atlantic Menhaden
Abstract Implementation of an ecosystem approach to fisheries management (EAFM) for forage fish requires methods to evaluate tradeoffs associated with competing management objectives that focus on supporting fishery yields or providing food for predators. We developed an Ecopath with Ecosim ecosyste...
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crwiley:10.1080/19425120.2017.1360420 2024-09-09T19:59:57+00:00 Evaluating Ecosystem‐Based Reference Points for Atlantic Menhaden Buchheister, Andre Miller, Thomas J. Houde, Edward D. Lenfest Ocean Program 2017 http://dx.doi.org/10.1080/19425120.2017.1360420 https://afspubs.onlinelibrary.wiley.com/doi/pdf/10.1080/19425120.2017.1360420 en eng Wiley http://creativecommons.org/licenses/by/4.0/ Marine and Coastal Fisheries volume 9, issue 1, page 457-478 ISSN 1942-5120 1942-5120 journal-article 2017 crwiley https://doi.org/10.1080/19425120.2017.1360420 2024-08-06T04:14:27Z Abstract Implementation of an ecosystem approach to fisheries management (EAFM) for forage fish requires methods to evaluate tradeoffs associated with competing management objectives that focus on supporting fishery yields or providing food for predators. We developed an Ecopath with Ecosim ecosystem model of the U.S. Northwest Atlantic continental shelf (NWACS) for the period 1982–2013 to inform an EAFM for Atlantic Menhaden Brevoortia tyrannus . The model (with 61 trophic groups and 8 fishing fleets) was parameterized and fitted to time series using data from stock assessments, surveys, and literature. Fifty‐year simulations evaluated how Atlantic Menhaden fishing mortality rates ( F ) influenced different ecosystem indicators, including population biomasses, fishery yields, prey‐to‐predator ratios, and the proportion of trophic groups that were positively or negatively affected. We quantified tradeoffs associated with a range of alternative ecosystem‐based reference points for Atlantic Menhaden F and biomass ( B ), including F for maximum sustainable yield ( F MSY ), 0.5 F MSY , proxies for current single‐species F reference points, 75% of virgin unfished biomass ( B 0 ), and 40% B 0 . Striped Bass Morone saxatilis were most sensitive to increases in Atlantic Menhaden fishing, largely due to their strong dietary reliance on this prey species, but other higher‐trophic‐level groups (birds, highly migratory species, sharks, and marine mammals) were also negatively impacted. Other commercially important predators of Atlantic Menhaden (e.g., Bluefish Pomatomus saltatrix and Weakfish Cynoscion regalis ) had moderate to negligible responses at the highest levels of Atlantic Menhaden F . The alternative reference points considered resulted in (1) variable Atlantic Menhaden biomasses (40–75% of B 0 ) and yields (54–100% of MSY), (2) up to a 60% decline in Striped Bass B and yield, (3) negative impacts on the B of ≤13% of modeled groups, and (4) positive impacts on the B of ≤6% of modeled groups. Simulations ... Article in Journal/Newspaper Northwest Atlantic Wiley Online Library Marine and Coastal Fisheries 9 1 457 478 |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract Implementation of an ecosystem approach to fisheries management (EAFM) for forage fish requires methods to evaluate tradeoffs associated with competing management objectives that focus on supporting fishery yields or providing food for predators. We developed an Ecopath with Ecosim ecosystem model of the U.S. Northwest Atlantic continental shelf (NWACS) for the period 1982–2013 to inform an EAFM for Atlantic Menhaden Brevoortia tyrannus . The model (with 61 trophic groups and 8 fishing fleets) was parameterized and fitted to time series using data from stock assessments, surveys, and literature. Fifty‐year simulations evaluated how Atlantic Menhaden fishing mortality rates ( F ) influenced different ecosystem indicators, including population biomasses, fishery yields, prey‐to‐predator ratios, and the proportion of trophic groups that were positively or negatively affected. We quantified tradeoffs associated with a range of alternative ecosystem‐based reference points for Atlantic Menhaden F and biomass ( B ), including F for maximum sustainable yield ( F MSY ), 0.5 F MSY , proxies for current single‐species F reference points, 75% of virgin unfished biomass ( B 0 ), and 40% B 0 . Striped Bass Morone saxatilis were most sensitive to increases in Atlantic Menhaden fishing, largely due to their strong dietary reliance on this prey species, but other higher‐trophic‐level groups (birds, highly migratory species, sharks, and marine mammals) were also negatively impacted. Other commercially important predators of Atlantic Menhaden (e.g., Bluefish Pomatomus saltatrix and Weakfish Cynoscion regalis ) had moderate to negligible responses at the highest levels of Atlantic Menhaden F . The alternative reference points considered resulted in (1) variable Atlantic Menhaden biomasses (40–75% of B 0 ) and yields (54–100% of MSY), (2) up to a 60% decline in Striped Bass B and yield, (3) negative impacts on the B of ≤13% of modeled groups, and (4) positive impacts on the B of ≤6% of modeled groups. Simulations ... |
author2 |
Lenfest Ocean Program |
format |
Article in Journal/Newspaper |
author |
Buchheister, Andre Miller, Thomas J. Houde, Edward D. |
spellingShingle |
Buchheister, Andre Miller, Thomas J. Houde, Edward D. Evaluating Ecosystem‐Based Reference Points for Atlantic Menhaden |
author_facet |
Buchheister, Andre Miller, Thomas J. Houde, Edward D. |
author_sort |
Buchheister, Andre |
title |
Evaluating Ecosystem‐Based Reference Points for Atlantic Menhaden |
title_short |
Evaluating Ecosystem‐Based Reference Points for Atlantic Menhaden |
title_full |
Evaluating Ecosystem‐Based Reference Points for Atlantic Menhaden |
title_fullStr |
Evaluating Ecosystem‐Based Reference Points for Atlantic Menhaden |
title_full_unstemmed |
Evaluating Ecosystem‐Based Reference Points for Atlantic Menhaden |
title_sort |
evaluating ecosystem‐based reference points for atlantic menhaden |
publisher |
Wiley |
publishDate |
2017 |
url |
http://dx.doi.org/10.1080/19425120.2017.1360420 https://afspubs.onlinelibrary.wiley.com/doi/pdf/10.1080/19425120.2017.1360420 |
genre |
Northwest Atlantic |
genre_facet |
Northwest Atlantic |
op_source |
Marine and Coastal Fisheries volume 9, issue 1, page 457-478 ISSN 1942-5120 1942-5120 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1080/19425120.2017.1360420 |
container_title |
Marine and Coastal Fisheries |
container_volume |
9 |
container_issue |
1 |
container_start_page |
457 |
op_container_end_page |
478 |
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1809931056698097664 |