Strength and consistency of density dependence in marine fish productivity
The correct prediction of the shape and strength of density dependence in productivity is key to predicting future stock development and providing the best possible long-term fisheries management advice. Here, we identify unbiased estimators of the relationship between somatic growth, recruitment an...
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ftunivwagenin:oai:library.wur.nl:wurpubs/595040 2024-04-28T08:30:58+00:00 Strength and consistency of density dependence in marine fish productivity Rindorf, Anna van Deurs, Mikael Howell, Daniel Andonegi, Eider Berger, Aaron Bogstad, Bjarte Cadigan, Noel Elvarsson, Bjarki Þór Hintzen, Niels Savina Roland, Marie Taylor, Marc Trijoulet, Vanessa van Kooten, Tobias Zhang, Fan Collie, Jeremy 2022 application/pdf https://research.wur.nl/en/publications/strength-and-consistency-of-density-dependence-in-marine-fish-pro https://doi.org/10.1111/faf.12650 en eng https://edepot.wur.nl/566090 https://research.wur.nl/en/publications/strength-and-consistency-of-density-dependence-in-marine-fish-pro doi:10.1111/faf.12650 https://creativecommons.org/licenses/by-nc/4.0/ Wageningen University & Research Fish and Fisheries 23 (2022) 4 ISSN: 1467-2960 Benthic fish North Atlantic demersal fish fisheries pelagic fish stability Article/Letter to editor 2022 ftunivwagenin https://doi.org/10.1111/faf.12650 2024-04-03T14:54:52Z The correct prediction of the shape and strength of density dependence in productivity is key to predicting future stock development and providing the best possible long-term fisheries management advice. Here, we identify unbiased estimators of the relationship between somatic growth, recruitment and density, and apply these to 80 stocks in the Northeast Atlantic. The analyses revealed density-dependent recruitment in 68% of the stocks. Excluding pelagic stocks exhibiting significant trends in spawning stock biomass, the probability of significant density dependence was even higher at 78%. The relationships demonstrated that at the commonly used biomass limit of 0.2 times maximum spawning stock size, only 32% of the stocks attained three quarters of their maximum recruitment. This leaves 68% of the stocks with less than three quarters of their maximum recruitment at this biomass limit. Significantly lower recruitment at high stock size than at intermediate stock size was seen in 38% of the stocks. Density dependence in late growth occurred in 54% of the stocks, whereas early growth was generally density-independent. Pelagic stocks were less likely to exhibit density dependence in recruitment than demersal and benthic stocks. We recommend that both the degree to which productivity is related to density and the degree to which the relationship changes over time should be investigated. Both of these aspects should be considered in evaluations of whether sustainability and yield can be improved by including density dependence in forecasts of the effects of different management actions. Article in Journal/Newspaper North Atlantic Northeast Atlantic Wageningen UR (University & Research Centre): Digital Library Fish and Fisheries |
institution |
Open Polar |
collection |
Wageningen UR (University & Research Centre): Digital Library |
op_collection_id |
ftunivwagenin |
language |
English |
topic |
Benthic fish North Atlantic demersal fish fisheries pelagic fish stability |
spellingShingle |
Benthic fish North Atlantic demersal fish fisheries pelagic fish stability Rindorf, Anna van Deurs, Mikael Howell, Daniel Andonegi, Eider Berger, Aaron Bogstad, Bjarte Cadigan, Noel Elvarsson, Bjarki Þór Hintzen, Niels Savina Roland, Marie Taylor, Marc Trijoulet, Vanessa van Kooten, Tobias Zhang, Fan Collie, Jeremy Strength and consistency of density dependence in marine fish productivity |
topic_facet |
Benthic fish North Atlantic demersal fish fisheries pelagic fish stability |
description |
The correct prediction of the shape and strength of density dependence in productivity is key to predicting future stock development and providing the best possible long-term fisheries management advice. Here, we identify unbiased estimators of the relationship between somatic growth, recruitment and density, and apply these to 80 stocks in the Northeast Atlantic. The analyses revealed density-dependent recruitment in 68% of the stocks. Excluding pelagic stocks exhibiting significant trends in spawning stock biomass, the probability of significant density dependence was even higher at 78%. The relationships demonstrated that at the commonly used biomass limit of 0.2 times maximum spawning stock size, only 32% of the stocks attained three quarters of their maximum recruitment. This leaves 68% of the stocks with less than three quarters of their maximum recruitment at this biomass limit. Significantly lower recruitment at high stock size than at intermediate stock size was seen in 38% of the stocks. Density dependence in late growth occurred in 54% of the stocks, whereas early growth was generally density-independent. Pelagic stocks were less likely to exhibit density dependence in recruitment than demersal and benthic stocks. We recommend that both the degree to which productivity is related to density and the degree to which the relationship changes over time should be investigated. Both of these aspects should be considered in evaluations of whether sustainability and yield can be improved by including density dependence in forecasts of the effects of different management actions. |
format |
Article in Journal/Newspaper |
author |
Rindorf, Anna van Deurs, Mikael Howell, Daniel Andonegi, Eider Berger, Aaron Bogstad, Bjarte Cadigan, Noel Elvarsson, Bjarki Þór Hintzen, Niels Savina Roland, Marie Taylor, Marc Trijoulet, Vanessa van Kooten, Tobias Zhang, Fan Collie, Jeremy |
author_facet |
Rindorf, Anna van Deurs, Mikael Howell, Daniel Andonegi, Eider Berger, Aaron Bogstad, Bjarte Cadigan, Noel Elvarsson, Bjarki Þór Hintzen, Niels Savina Roland, Marie Taylor, Marc Trijoulet, Vanessa van Kooten, Tobias Zhang, Fan Collie, Jeremy |
author_sort |
Rindorf, Anna |
title |
Strength and consistency of density dependence in marine fish productivity |
title_short |
Strength and consistency of density dependence in marine fish productivity |
title_full |
Strength and consistency of density dependence in marine fish productivity |
title_fullStr |
Strength and consistency of density dependence in marine fish productivity |
title_full_unstemmed |
Strength and consistency of density dependence in marine fish productivity |
title_sort |
strength and consistency of density dependence in marine fish productivity |
publishDate |
2022 |
url |
https://research.wur.nl/en/publications/strength-and-consistency-of-density-dependence-in-marine-fish-pro https://doi.org/10.1111/faf.12650 |
genre |
North Atlantic Northeast Atlantic |
genre_facet |
North Atlantic Northeast Atlantic |
op_source |
Fish and Fisheries 23 (2022) 4 ISSN: 1467-2960 |
op_relation |
https://edepot.wur.nl/566090 https://research.wur.nl/en/publications/strength-and-consistency-of-density-dependence-in-marine-fish-pro doi:10.1111/faf.12650 |
op_rights |
https://creativecommons.org/licenses/by-nc/4.0/ Wageningen University & Research |
op_doi |
https://doi.org/10.1111/faf.12650 |
container_title |
Fish and Fisheries |
_version_ |
1797588659987283968 |