Density‐ and size‐dependent mortality in fish early life stages
The importance of survival and growth variations early in life for population dynamics depends on the degrees of compensatory density dependence and size dependence in survival at later life stages. Quantifying density‐ and size‐dependent mortality at different juvenile stages is therefore important...
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2019
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Online Access: | http://hdl.handle.net/11250/2637765 https://doi.org/10.1111/faf.12391 |
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ftimr:oai:imr.brage.unit.no:11250/2637765 2024-09-09T19:26:16+00:00 Density‐ and size‐dependent mortality in fish early life stages Stige, Leif Christian Rogers, Lauren Neuheimer, Anna B. Hunsicker, Mary E. Yaragina, Natalia A. Ottersen, Geir Ciannelli, Lorenzo Langangen, Øystein Durant, Joel Marcel 2019 application/pdf http://hdl.handle.net/11250/2637765 https://doi.org/10.1111/faf.12391 eng eng Norges forskningsråd: 255460 EC/FP7/609033 Norges forskningsråd: 280468 Norges forskningsråd: 267577 Fish and Fisheries. 2019, 20 (5), 962-976. urn:issn:1467-2960 http://hdl.handle.net/11250/2637765 https://doi.org/10.1111/faf.12391 cristin:1729490 962-976 20 Fish and Fisheries 5 Journal article Peer reviewed 2019 ftimr https://doi.org/10.1111/faf.12391 2024-07-31T03:37:25Z The importance of survival and growth variations early in life for population dynamics depends on the degrees of compensatory density dependence and size dependence in survival at later life stages. Quantifying density‐ and size‐dependent mortality at different juvenile stages is therefore important to understand and potentially predict the recruitment to the population. We applied a statistical state‐space modelling approach to analyse time series of abundance and mean body size of larval and juvenile fish. The focus was to identify the importance of abundance and body size for growth and survival through successive larval and juvenile age intervals, and to quantify how the dynamics propagate through the early life to influence recruitment. We thus identified both relevant ages and mechanisms (i.e. density dependence and size dependence in survival and growth) linking recruitment variability to early life dynamics. The analysis was conducted on six economically and ecologically important fish populations from cold temperate and sub‐arctic marine ecosystems. Our results underscore the importance of size for survival early in life. The comparative analysis suggests that size‐dependent mortality and density‐dependent growth frequently occur at a transition from pelagic to demersal habitats, which may be linked to competition for suitable habitat. The generality of this hypothesis warrants testing in future research. publishedVersion Article in Journal/Newspaper Arctic Institute for Marine Research: Brage IMR Arctic Fish and Fisheries 20 5 962 976 |
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Open Polar |
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Institute for Marine Research: Brage IMR |
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ftimr |
language |
English |
description |
The importance of survival and growth variations early in life for population dynamics depends on the degrees of compensatory density dependence and size dependence in survival at later life stages. Quantifying density‐ and size‐dependent mortality at different juvenile stages is therefore important to understand and potentially predict the recruitment to the population. We applied a statistical state‐space modelling approach to analyse time series of abundance and mean body size of larval and juvenile fish. The focus was to identify the importance of abundance and body size for growth and survival through successive larval and juvenile age intervals, and to quantify how the dynamics propagate through the early life to influence recruitment. We thus identified both relevant ages and mechanisms (i.e. density dependence and size dependence in survival and growth) linking recruitment variability to early life dynamics. The analysis was conducted on six economically and ecologically important fish populations from cold temperate and sub‐arctic marine ecosystems. Our results underscore the importance of size for survival early in life. The comparative analysis suggests that size‐dependent mortality and density‐dependent growth frequently occur at a transition from pelagic to demersal habitats, which may be linked to competition for suitable habitat. The generality of this hypothesis warrants testing in future research. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Stige, Leif Christian Rogers, Lauren Neuheimer, Anna B. Hunsicker, Mary E. Yaragina, Natalia A. Ottersen, Geir Ciannelli, Lorenzo Langangen, Øystein Durant, Joel Marcel |
spellingShingle |
Stige, Leif Christian Rogers, Lauren Neuheimer, Anna B. Hunsicker, Mary E. Yaragina, Natalia A. Ottersen, Geir Ciannelli, Lorenzo Langangen, Øystein Durant, Joel Marcel Density‐ and size‐dependent mortality in fish early life stages |
author_facet |
Stige, Leif Christian Rogers, Lauren Neuheimer, Anna B. Hunsicker, Mary E. Yaragina, Natalia A. Ottersen, Geir Ciannelli, Lorenzo Langangen, Øystein Durant, Joel Marcel |
author_sort |
Stige, Leif Christian |
title |
Density‐ and size‐dependent mortality in fish early life stages |
title_short |
Density‐ and size‐dependent mortality in fish early life stages |
title_full |
Density‐ and size‐dependent mortality in fish early life stages |
title_fullStr |
Density‐ and size‐dependent mortality in fish early life stages |
title_full_unstemmed |
Density‐ and size‐dependent mortality in fish early life stages |
title_sort |
density‐ and size‐dependent mortality in fish early life stages |
publishDate |
2019 |
url |
http://hdl.handle.net/11250/2637765 https://doi.org/10.1111/faf.12391 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
962-976 20 Fish and Fisheries 5 |
op_relation |
Norges forskningsråd: 255460 EC/FP7/609033 Norges forskningsråd: 280468 Norges forskningsråd: 267577 Fish and Fisheries. 2019, 20 (5), 962-976. urn:issn:1467-2960 http://hdl.handle.net/11250/2637765 https://doi.org/10.1111/faf.12391 cristin:1729490 |
op_doi |
https://doi.org/10.1111/faf.12391 |
container_title |
Fish and Fisheries |
container_volume |
20 |
container_issue |
5 |
container_start_page |
962 |
op_container_end_page |
976 |
_version_ |
1809895924439187456 |