Fishing, predation, and temperature drive herring decline in a large marine ecosystem
Abstract Since 1960, landings of Atlantic herring have been the greatest of any marine species in Canada, surpassing Atlantic cod and accounting for 24% of the total seafood harvested in Atlantic Canada. The Scotian Shelf‐Bay of Fundy herring fisheries (NAFO Division 4VWX) is among Canada's old...
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ftdoajarticles:oai:doaj.org/article:000004687a3a411cb466625281f2ceb0 2023-05-15T15:27:40+02:00 Fishing, predation, and temperature drive herring decline in a large marine ecosystem Daniel G. Boyce Brian Petrie Kenneth T. Frank 2021-12-01T00:00:00Z https://doi.org/10.1002/ece3.8411 https://doaj.org/article/000004687a3a411cb466625281f2ceb0 EN eng Wiley https://doi.org/10.1002/ece3.8411 https://doaj.org/toc/2045-7758 2045-7758 doi:10.1002/ece3.8411 https://doaj.org/article/000004687a3a411cb466625281f2ceb0 Ecology and Evolution, Vol 11, Iss 24, Pp 18136-18150 (2021) Atlantic herring climate change ecosystem ecosystem‐based egg predation exploitation Ecology QH540-549.5 article 2021 ftdoajarticles https://doi.org/10.1002/ece3.8411 2022-12-31T04:38:32Z Abstract Since 1960, landings of Atlantic herring have been the greatest of any marine species in Canada, surpassing Atlantic cod and accounting for 24% of the total seafood harvested in Atlantic Canada. The Scotian Shelf‐Bay of Fundy herring fisheries (NAFO Division 4VWX) is among Canada's oldest and drives this productivity, accounting for up to 75% of the total herring catch in some years. The stocks’ productivity and overall health have declined since 1965. Despite management measures to promote recovery implemented since 2003, biomass remains low and is declining. The factors that drive the productivity of 4VWX herring are primarily unresolved, likely impeding the effectiveness of management actions on this stock. We evaluated potential drivers of herring variability by analyzing 52 time‐series that describe the temporal and spatial evolution of the 4VWX herring population and the physical, ecological, and anthropogenic factors that could affect them using structural equation models. Variation in herring biomass was best accounted for by the exploitation rate's negative effect and the geographic distribution of fishing and recruitment. Thermal phenology and temperature adversely and egg predation positively impacted the early life stage mortality rate and, ultimately, adult biomass. These findings are broadly relevant to fisheries management, but particularly for 4VWX herring, where the current management approach does not consider their early life stage dynamics or assess them within the ecosystem or climate change contexts. Article in Journal/Newspaper atlantic cod Directory of Open Access Journals: DOAJ Articles Canada Ecology and Evolution 11 24 18136 18150 |
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Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Atlantic herring climate change ecosystem ecosystem‐based egg predation exploitation Ecology QH540-549.5 |
spellingShingle |
Atlantic herring climate change ecosystem ecosystem‐based egg predation exploitation Ecology QH540-549.5 Daniel G. Boyce Brian Petrie Kenneth T. Frank Fishing, predation, and temperature drive herring decline in a large marine ecosystem |
topic_facet |
Atlantic herring climate change ecosystem ecosystem‐based egg predation exploitation Ecology QH540-549.5 |
description |
Abstract Since 1960, landings of Atlantic herring have been the greatest of any marine species in Canada, surpassing Atlantic cod and accounting for 24% of the total seafood harvested in Atlantic Canada. The Scotian Shelf‐Bay of Fundy herring fisheries (NAFO Division 4VWX) is among Canada's oldest and drives this productivity, accounting for up to 75% of the total herring catch in some years. The stocks’ productivity and overall health have declined since 1965. Despite management measures to promote recovery implemented since 2003, biomass remains low and is declining. The factors that drive the productivity of 4VWX herring are primarily unresolved, likely impeding the effectiveness of management actions on this stock. We evaluated potential drivers of herring variability by analyzing 52 time‐series that describe the temporal and spatial evolution of the 4VWX herring population and the physical, ecological, and anthropogenic factors that could affect them using structural equation models. Variation in herring biomass was best accounted for by the exploitation rate's negative effect and the geographic distribution of fishing and recruitment. Thermal phenology and temperature adversely and egg predation positively impacted the early life stage mortality rate and, ultimately, adult biomass. These findings are broadly relevant to fisheries management, but particularly for 4VWX herring, where the current management approach does not consider their early life stage dynamics or assess them within the ecosystem or climate change contexts. |
format |
Article in Journal/Newspaper |
author |
Daniel G. Boyce Brian Petrie Kenneth T. Frank |
author_facet |
Daniel G. Boyce Brian Petrie Kenneth T. Frank |
author_sort |
Daniel G. Boyce |
title |
Fishing, predation, and temperature drive herring decline in a large marine ecosystem |
title_short |
Fishing, predation, and temperature drive herring decline in a large marine ecosystem |
title_full |
Fishing, predation, and temperature drive herring decline in a large marine ecosystem |
title_fullStr |
Fishing, predation, and temperature drive herring decline in a large marine ecosystem |
title_full_unstemmed |
Fishing, predation, and temperature drive herring decline in a large marine ecosystem |
title_sort |
fishing, predation, and temperature drive herring decline in a large marine ecosystem |
publisher |
Wiley |
publishDate |
2021 |
url |
https://doi.org/10.1002/ece3.8411 https://doaj.org/article/000004687a3a411cb466625281f2ceb0 |
geographic |
Canada |
geographic_facet |
Canada |
genre |
atlantic cod |
genre_facet |
atlantic cod |
op_source |
Ecology and Evolution, Vol 11, Iss 24, Pp 18136-18150 (2021) |
op_relation |
https://doi.org/10.1002/ece3.8411 https://doaj.org/toc/2045-7758 2045-7758 doi:10.1002/ece3.8411 https://doaj.org/article/000004687a3a411cb466625281f2ceb0 |
op_doi |
https://doi.org/10.1002/ece3.8411 |
container_title |
Ecology and Evolution |
container_volume |
11 |
container_issue |
24 |
container_start_page |
18136 |
op_container_end_page |
18150 |
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1766358093934886912 |