Can regime shifts in reproduction be explained by changing climate and food availability?
Marine populations often show considerable variation in their productivity, including regime shifts. Of special interest are prolonged shifts to low recruitment and low abundance which occur in many fish populations despite reductions in fishing pressure. One of the possible causes for the lack of r...
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ftjyvaeskylaenun:oai:jyx.jyu.fi:123456789/90012 2024-05-19T07:37:09+00:00 Can regime shifts in reproduction be explained by changing climate and food availability? Tirronen, Maria Depestele, Jochen Kuparinen, Anna 2023 application/pdf fulltext http://urn.fi/URN:NBN:fi:jyu-202310166050 eng eng Frontiers Media SA Frontiers in Marine Science 2296-7745 10 770884 317495 info:eu-repo/grantAgreement/EC/H2020/770884/EU//COMPLEX-FISH 10.3389/fmars.2023.1167354 European Commission Research Council of Finland Euroopan komissio Suomen Akatemia Tirronen, M., Depestele, J., & Kuparinen, A. (2023). Can regime shifts in reproduction be explained by changing climate and food availability?. Frontiers in Marine Science , 10 , Article 1167354. https://doi.org/10.3389/fmars.2023.1167354 CONVID_193448256 URN:NBN:fi:jyu-202310166050 http://urn.fi/URN:NBN:fi:jyu-202310166050 CC BY 4.0 © 2023 Tirronen, Depestele and Kuparinen openAccess https://creativecommons.org/licenses/by/4.0/ ilmastonmuutokset kalakannat allee effect environmental forcing non-linear recruitment dynamics regime shifts population recovery article http://purl.org/eprint/type/JournalArticle http://purl.org/coar/resource_type/c_2df8fbb1 publishedVersion A1 2023 ftjyvaeskylaenun 2024-04-23T23:38:28Z Marine populations often show considerable variation in their productivity, including regime shifts. Of special interest are prolonged shifts to low recruitment and low abundance which occur in many fish populations despite reductions in fishing pressure. One of the possible causes for the lack of recovery has been suggested to be the Allee effect (depensation). Nonetheless, both regime shifts and the Allee effect are empirically emerging patterns but provide no explanation about the underlying mechanisms. Environmental forcing, on the other hand, is known to induce population fluctuations and has also been suggested as one of the primary challenges for recovery. In the present study, we build upon recently developed Bayesian change-point models to explore the contribution of food and climate as external drivers in recruitment regime shifts, while accounting for density-dependent mechanisms (compensation and depensation). Food availability is approximated by the copepod community. Temperature is included as a climatic driver. Three demersal fish populations in the Irish Sea are studied: Atlantic cod (Gadus morhua), whiting (Merlangius merlangus) and common sole (Solea solea). We demonstrate that, while spawning stock biomass undoubtedly impacts recruitment, abiotic and biotic drivers can have substantial additional impacts, which can explain regime shifts in recruitment dynamics or low recruitment at low population abundances. Our results stress the importance of environmental forcing to capture variability in fish recruitment. peerReviewed Article in Journal/Newspaper atlantic cod Gadus morhua JYX - Jyväskylä University Digital Archive |
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Open Polar |
collection |
JYX - Jyväskylä University Digital Archive |
op_collection_id |
ftjyvaeskylaenun |
language |
English |
topic |
ilmastonmuutokset kalakannat allee effect environmental forcing non-linear recruitment dynamics regime shifts population recovery |
spellingShingle |
ilmastonmuutokset kalakannat allee effect environmental forcing non-linear recruitment dynamics regime shifts population recovery Tirronen, Maria Depestele, Jochen Kuparinen, Anna Can regime shifts in reproduction be explained by changing climate and food availability? |
topic_facet |
ilmastonmuutokset kalakannat allee effect environmental forcing non-linear recruitment dynamics regime shifts population recovery |
description |
Marine populations often show considerable variation in their productivity, including regime shifts. Of special interest are prolonged shifts to low recruitment and low abundance which occur in many fish populations despite reductions in fishing pressure. One of the possible causes for the lack of recovery has been suggested to be the Allee effect (depensation). Nonetheless, both regime shifts and the Allee effect are empirically emerging patterns but provide no explanation about the underlying mechanisms. Environmental forcing, on the other hand, is known to induce population fluctuations and has also been suggested as one of the primary challenges for recovery. In the present study, we build upon recently developed Bayesian change-point models to explore the contribution of food and climate as external drivers in recruitment regime shifts, while accounting for density-dependent mechanisms (compensation and depensation). Food availability is approximated by the copepod community. Temperature is included as a climatic driver. Three demersal fish populations in the Irish Sea are studied: Atlantic cod (Gadus morhua), whiting (Merlangius merlangus) and common sole (Solea solea). We demonstrate that, while spawning stock biomass undoubtedly impacts recruitment, abiotic and biotic drivers can have substantial additional impacts, which can explain regime shifts in recruitment dynamics or low recruitment at low population abundances. Our results stress the importance of environmental forcing to capture variability in fish recruitment. peerReviewed |
format |
Article in Journal/Newspaper |
author |
Tirronen, Maria Depestele, Jochen Kuparinen, Anna |
author_facet |
Tirronen, Maria Depestele, Jochen Kuparinen, Anna |
author_sort |
Tirronen, Maria |
title |
Can regime shifts in reproduction be explained by changing climate and food availability? |
title_short |
Can regime shifts in reproduction be explained by changing climate and food availability? |
title_full |
Can regime shifts in reproduction be explained by changing climate and food availability? |
title_fullStr |
Can regime shifts in reproduction be explained by changing climate and food availability? |
title_full_unstemmed |
Can regime shifts in reproduction be explained by changing climate and food availability? |
title_sort |
can regime shifts in reproduction be explained by changing climate and food availability? |
publisher |
Frontiers Media SA |
publishDate |
2023 |
url |
http://urn.fi/URN:NBN:fi:jyu-202310166050 |
genre |
atlantic cod Gadus morhua |
genre_facet |
atlantic cod Gadus morhua |
op_relation |
Frontiers in Marine Science 2296-7745 10 770884 317495 info:eu-repo/grantAgreement/EC/H2020/770884/EU//COMPLEX-FISH 10.3389/fmars.2023.1167354 European Commission Research Council of Finland Euroopan komissio Suomen Akatemia Tirronen, M., Depestele, J., & Kuparinen, A. (2023). Can regime shifts in reproduction be explained by changing climate and food availability?. Frontiers in Marine Science , 10 , Article 1167354. https://doi.org/10.3389/fmars.2023.1167354 CONVID_193448256 URN:NBN:fi:jyu-202310166050 http://urn.fi/URN:NBN:fi:jyu-202310166050 |
op_rights |
CC BY 4.0 © 2023 Tirronen, Depestele and Kuparinen openAccess https://creativecommons.org/licenses/by/4.0/ |
_version_ |
1799476394337501184 |