Population growth across heterogeneous environments: effects of harvesting and age structure
Population growth is affected by several factors such as climate, species interaction and harvesting pressure. However, additional complexity can arise if fishing increases the sensitivity to environmental variability. To predict the effects of fisheries and climate on marine populations, there is a...
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Online Access: | http://hdl.handle.net/10508/8586 http://hdl.handle.net/10261/323814 https://doi.org/10.3354/meps10308 |
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ftcsic:oai:digital.csic.es:10261/323814 2024-02-11T09:59:51+01:00 Population growth across heterogeneous environments: effects of harvesting and age structure Durant, J.M. Hidalgo, Manuel Rouyer, T.A. Hjermann, D.Ø. Ciannelli, Lorenzo Eikeset, Anne Maria Yaragina, Natalia Stenseth, Nils Christian Arctic Ocean Barents Sea Mediterranean Sea 2013 http://hdl.handle.net/10508/8586 http://hdl.handle.net/10261/323814 https://doi.org/10.3354/meps10308 en eng Centro Oceanográfico de Baleares http://www.int-res.com/abstracts/meps/v480/p277-287/ Marine Ecology-Progress Series, 480. 2013: 277-287 http://hdl.handle.net/10508/8586 http://hdl.handle.net/10261/323814 doi:10.3354/meps10308 6242 open Centro Oceanográfico de Baleares Barents Sea Pesquerías Mediterranean Sea Bering Sea Cod Gadus morhua European hake Merluccius merluccius Pollock Theragra chalcogramma Leslie matrix Fisheries research article 2013 ftcsic https://doi.org/10.3354/meps10308 2024-01-16T11:47:21Z Population growth is affected by several factors such as climate, species interaction and harvesting pressure. However, additional complexity can arise if fishing increases the sensitivity to environmental variability. To predict the effects of fisheries and climate on marine populations, there is a need for improved understanding of how they affect key ecological processes such as population growth. In this study, we used a comparative approach investigating commercially fished species across different ecosystems: the Norwegian Sea−Barents Sea (Northeast Arctic cod), the North Sea (North Sea cod), the Atlantic Ocean (European hake), the Mediterranean Sea (European hake), and the Gulf of Alaska and Bering Sea (walleye pollock). Our objective was to compare the effects of commercial fisheries, age structure and environmental variability on population growth rate. We show that although all stocks experienced a decline in abundance, only 3 of them showed a concomitant decreasing trend in generation time (South Atlantic hake, North Atlantic hake and Northeast Arctic cod), suggesting a fishing-induced erosion in their age structure. Intra-specific analysis shows that changes in generation time triggered an increase in the relative contribution of recruitment to population growth. Furthermore, the contribution from recruitment to population growth changes due to large-scale climate indices or regional-scale environmental covariates, such as sea temperature. This study illustrates how and where the interaction between large-scale ecological patterns and regional/short-scale processes are important for designing management regulations Sí Article in Journal/Newspaper Arctic cod Arctic Arctic Ocean Barents Sea Bering Sea Gadus morhua North Atlantic Northeast Arctic cod Norwegian Sea Theragra chalcogramma Alaska Digital.CSIC (Spanish National Research Council) Arctic Arctic Ocean Barents Sea Bering Sea Gulf of Alaska Hake ENVELOPE(15.612,15.612,66.797,66.797) Norwegian Sea Marine Ecology Progress Series 480 277 287 |
institution |
Open Polar |
collection |
Digital.CSIC (Spanish National Research Council) |
op_collection_id |
ftcsic |
language |
English |
topic |
Centro Oceanográfico de Baleares Barents Sea Pesquerías Mediterranean Sea Bering Sea Cod Gadus morhua European hake Merluccius merluccius Pollock Theragra chalcogramma Leslie matrix Fisheries |
spellingShingle |
Centro Oceanográfico de Baleares Barents Sea Pesquerías Mediterranean Sea Bering Sea Cod Gadus morhua European hake Merluccius merluccius Pollock Theragra chalcogramma Leslie matrix Fisheries Durant, J.M. Hidalgo, Manuel Rouyer, T.A. Hjermann, D.Ø. Ciannelli, Lorenzo Eikeset, Anne Maria Yaragina, Natalia Stenseth, Nils Christian Population growth across heterogeneous environments: effects of harvesting and age structure |
topic_facet |
Centro Oceanográfico de Baleares Barents Sea Pesquerías Mediterranean Sea Bering Sea Cod Gadus morhua European hake Merluccius merluccius Pollock Theragra chalcogramma Leslie matrix Fisheries |
description |
Population growth is affected by several factors such as climate, species interaction and harvesting pressure. However, additional complexity can arise if fishing increases the sensitivity to environmental variability. To predict the effects of fisheries and climate on marine populations, there is a need for improved understanding of how they affect key ecological processes such as population growth. In this study, we used a comparative approach investigating commercially fished species across different ecosystems: the Norwegian Sea−Barents Sea (Northeast Arctic cod), the North Sea (North Sea cod), the Atlantic Ocean (European hake), the Mediterranean Sea (European hake), and the Gulf of Alaska and Bering Sea (walleye pollock). Our objective was to compare the effects of commercial fisheries, age structure and environmental variability on population growth rate. We show that although all stocks experienced a decline in abundance, only 3 of them showed a concomitant decreasing trend in generation time (South Atlantic hake, North Atlantic hake and Northeast Arctic cod), suggesting a fishing-induced erosion in their age structure. Intra-specific analysis shows that changes in generation time triggered an increase in the relative contribution of recruitment to population growth. Furthermore, the contribution from recruitment to population growth changes due to large-scale climate indices or regional-scale environmental covariates, such as sea temperature. This study illustrates how and where the interaction between large-scale ecological patterns and regional/short-scale processes are important for designing management regulations Sí |
format |
Article in Journal/Newspaper |
author |
Durant, J.M. Hidalgo, Manuel Rouyer, T.A. Hjermann, D.Ø. Ciannelli, Lorenzo Eikeset, Anne Maria Yaragina, Natalia Stenseth, Nils Christian |
author_facet |
Durant, J.M. Hidalgo, Manuel Rouyer, T.A. Hjermann, D.Ø. Ciannelli, Lorenzo Eikeset, Anne Maria Yaragina, Natalia Stenseth, Nils Christian |
author_sort |
Durant, J.M. |
title |
Population growth across heterogeneous environments: effects of harvesting and age structure |
title_short |
Population growth across heterogeneous environments: effects of harvesting and age structure |
title_full |
Population growth across heterogeneous environments: effects of harvesting and age structure |
title_fullStr |
Population growth across heterogeneous environments: effects of harvesting and age structure |
title_full_unstemmed |
Population growth across heterogeneous environments: effects of harvesting and age structure |
title_sort |
population growth across heterogeneous environments: effects of harvesting and age structure |
publishDate |
2013 |
url |
http://hdl.handle.net/10508/8586 http://hdl.handle.net/10261/323814 https://doi.org/10.3354/meps10308 |
op_coverage |
Arctic Ocean Barents Sea Mediterranean Sea |
long_lat |
ENVELOPE(15.612,15.612,66.797,66.797) |
geographic |
Arctic Arctic Ocean Barents Sea Bering Sea Gulf of Alaska Hake Norwegian Sea |
geographic_facet |
Arctic Arctic Ocean Barents Sea Bering Sea Gulf of Alaska Hake Norwegian Sea |
genre |
Arctic cod Arctic Arctic Ocean Barents Sea Bering Sea Gadus morhua North Atlantic Northeast Arctic cod Norwegian Sea Theragra chalcogramma Alaska |
genre_facet |
Arctic cod Arctic Arctic Ocean Barents Sea Bering Sea Gadus morhua North Atlantic Northeast Arctic cod Norwegian Sea Theragra chalcogramma Alaska |
op_relation |
Centro Oceanográfico de Baleares http://www.int-res.com/abstracts/meps/v480/p277-287/ Marine Ecology-Progress Series, 480. 2013: 277-287 http://hdl.handle.net/10508/8586 http://hdl.handle.net/10261/323814 doi:10.3354/meps10308 6242 |
op_rights |
open |
op_doi |
https://doi.org/10.3354/meps10308 |
container_title |
Marine Ecology Progress Series |
container_volume |
480 |
container_start_page |
277 |
op_container_end_page |
287 |
_version_ |
1790595591151026176 |