Coexistence in North Sea fish communities: implications for growth and natural mortality
For a fish community to persist over time, all species must be able on average to replace themselves on a one-for-one basis over their lifetime. We use this principle and a size-based equilibrium model where asymptotic length is used as a functional trait to investigate how natural mortality should...
Published in: | ICES Journal of Marine Science |
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ftunivwagenin:oai:library.wur.nl:wurpubs/366033 2024-01-14T10:06:57+01:00 Coexistence in North Sea fish communities: implications for growth and natural mortality Gislason, H. Pope, J.G. Rice, J.C. Daan, N. 2008 application/pdf https://research.wur.nl/en/publications/coexistence-in-north-sea-fish-communities-implications-for-growth https://doi.org/10.1093/icesjms/fsn035 en eng https://edepot.wur.nl/19556 https://research.wur.nl/en/publications/coexistence-in-north-sea-fish-communities-implications-for-growth doi:10.1093/icesjms/fsn035 info:eu-repo/semantics/restrictedAccess Wageningen University & Research ICES Journal of Marine Science 65 (2008) 4 ISSN: 1054-3139 biology cod gadus-morhua environmental-temperature life-history marine fishes population predation teleost fishes trade-off west-coast info:eu-repo/semantics/article Article/Letter to editor info:eu-repo/semantics/publishedVersion 2008 ftunivwagenin https://doi.org/10.1093/icesjms/fsn035 2023-12-20T23:19:24Z For a fish community to persist over time, all species must be able on average to replace themselves on a one-for-one basis over their lifetime. We use this principle and a size-based equilibrium model where asymptotic length is used as a functional trait to investigate how natural mortality should scale with size within and across pelagic and demersal species of North Sea teleosts. The model predicts natural mortality to scale with body length raised to a power of ¿1.66 at current levels of exploitation. Additionally, natural mortality of demersal species should be proportional to asymptotic length raised to a power of 0.80, so generating a higher natural mortality at a given length for large species than for small ones. The model also suggests that the exponent in the scaling of the von Bertalanffy growth parameter K with asymptotic length should be more negative for pelagic than for demersal species. We test our results by analysing independent estimates of predation mortality, the scaling of maximum recruitment per unit of spawning-stock biomass with asymptotic length, and the general relationship between K and asymptotic length for demersal and pelagic families of fish. All tests are consistent with our modelling results. Article in Journal/Newspaper Gadus morhua Wageningen UR (University & Research Centre): Digital Library ICES Journal of Marine Science 65 4 514 530 |
institution |
Open Polar |
collection |
Wageningen UR (University & Research Centre): Digital Library |
op_collection_id |
ftunivwagenin |
language |
English |
topic |
biology cod gadus-morhua environmental-temperature life-history marine fishes population predation teleost fishes trade-off west-coast |
spellingShingle |
biology cod gadus-morhua environmental-temperature life-history marine fishes population predation teleost fishes trade-off west-coast Gislason, H. Pope, J.G. Rice, J.C. Daan, N. Coexistence in North Sea fish communities: implications for growth and natural mortality |
topic_facet |
biology cod gadus-morhua environmental-temperature life-history marine fishes population predation teleost fishes trade-off west-coast |
description |
For a fish community to persist over time, all species must be able on average to replace themselves on a one-for-one basis over their lifetime. We use this principle and a size-based equilibrium model where asymptotic length is used as a functional trait to investigate how natural mortality should scale with size within and across pelagic and demersal species of North Sea teleosts. The model predicts natural mortality to scale with body length raised to a power of ¿1.66 at current levels of exploitation. Additionally, natural mortality of demersal species should be proportional to asymptotic length raised to a power of 0.80, so generating a higher natural mortality at a given length for large species than for small ones. The model also suggests that the exponent in the scaling of the von Bertalanffy growth parameter K with asymptotic length should be more negative for pelagic than for demersal species. We test our results by analysing independent estimates of predation mortality, the scaling of maximum recruitment per unit of spawning-stock biomass with asymptotic length, and the general relationship between K and asymptotic length for demersal and pelagic families of fish. All tests are consistent with our modelling results. |
format |
Article in Journal/Newspaper |
author |
Gislason, H. Pope, J.G. Rice, J.C. Daan, N. |
author_facet |
Gislason, H. Pope, J.G. Rice, J.C. Daan, N. |
author_sort |
Gislason, H. |
title |
Coexistence in North Sea fish communities: implications for growth and natural mortality |
title_short |
Coexistence in North Sea fish communities: implications for growth and natural mortality |
title_full |
Coexistence in North Sea fish communities: implications for growth and natural mortality |
title_fullStr |
Coexistence in North Sea fish communities: implications for growth and natural mortality |
title_full_unstemmed |
Coexistence in North Sea fish communities: implications for growth and natural mortality |
title_sort |
coexistence in north sea fish communities: implications for growth and natural mortality |
publishDate |
2008 |
url |
https://research.wur.nl/en/publications/coexistence-in-north-sea-fish-communities-implications-for-growth https://doi.org/10.1093/icesjms/fsn035 |
genre |
Gadus morhua |
genre_facet |
Gadus morhua |
op_source |
ICES Journal of Marine Science 65 (2008) 4 ISSN: 1054-3139 |
op_relation |
https://edepot.wur.nl/19556 https://research.wur.nl/en/publications/coexistence-in-north-sea-fish-communities-implications-for-growth doi:10.1093/icesjms/fsn035 |
op_rights |
info:eu-repo/semantics/restrictedAccess Wageningen University & Research |
op_doi |
https://doi.org/10.1093/icesjms/fsn035 |
container_title |
ICES Journal of Marine Science |
container_volume |
65 |
container_issue |
4 |
container_start_page |
514 |
op_container_end_page |
530 |
_version_ |
1788061374791811072 |