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...
Published in: | Marine Ecology Progress Series |
---|---|
Main Authors: | , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Centro Oceanográfico de Baleares
2013
|
Subjects: | |
Online Access: | http://hdl.handle.net/10508/8586 https://doi.org/10.3354/meps10308 |
id |
ftieo:oai:repositorio.ieo.es:10508/8586 |
---|---|
record_format |
openpolar |
spelling |
ftieo:oai:repositorio.ieo.es:10508/8586 2023-05-15T14:30:25+02:00 Population growth across heterogeneous environments: effects of harvesting and age structure Durant, J.M. (Joël M.) Hidalgo, M. (Manuel) Rouyer, T.A. (Tristan A.) Hjermann, D.Ø. (Dag Ø.) Ciannelli, L. (Lorenzo) Eikeset, A.M. (Anne Maria) Yaragina, N. (Natalia) Stenseth, N.C. (Nils Christian) Arctic Ocean Barents Sea Mediterranean Sea 2013 http://hdl.handle.net/10508/8586 https://doi.org/10.3354/meps10308 eng eng Centro Oceanográfico de Baleares http://www.int-res.com/abstracts/meps/v480/p277-287/ http://hdl.handle.net/10508/8586 Marine Ecology-Progress Series, 480. 2013: 277-287 doi:10.3354/meps10308 Atribución-NoComercial-SinDerivadas 3.0 España http://creativecommons.org/licenses/by-nc-nd/3.0/es/ openAccess CC-BY-NC-ND Barents Sea Mediterranean Sea Bering Sea Cod Gadus morhua European hake Merluccius merluccius Pollock Theragra chalcogramma Leslie matrix Fisheries article 2013 ftieo https://doi.org/10.3354/meps10308 2022-08-30T23:47:21Z 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 2 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 Instituto Español de Oceanografía: e-IEO 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 |
Instituto Español de Oceanografía: e-IEO |
op_collection_id |
ftieo |
language |
English |
topic |
Barents Sea Mediterranean Sea Bering Sea Cod Gadus morhua European hake Merluccius merluccius Pollock Theragra chalcogramma Leslie matrix Fisheries |
spellingShingle |
Barents Sea Mediterranean Sea Bering Sea Cod Gadus morhua European hake Merluccius merluccius Pollock Theragra chalcogramma Leslie matrix Fisheries Durant, J.M. (Joël M.) Hidalgo, M. (Manuel) Rouyer, T.A. (Tristan A.) Hjermann, D.Ø. (Dag Ø.) Ciannelli, L. (Lorenzo) Eikeset, A.M. (Anne Maria) Yaragina, N. (Natalia) Stenseth, N.C. (Nils Christian) Population growth across heterogeneous environments: effects of harvesting and age structure |
topic_facet |
Barents Sea 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 2 |
format |
Article in Journal/Newspaper |
author |
Durant, J.M. (Joël M.) Hidalgo, M. (Manuel) Rouyer, T.A. (Tristan A.) Hjermann, D.Ø. (Dag Ø.) Ciannelli, L. (Lorenzo) Eikeset, A.M. (Anne Maria) Yaragina, N. (Natalia) Stenseth, N.C. (Nils Christian) |
author_facet |
Durant, J.M. (Joël M.) Hidalgo, M. (Manuel) Rouyer, T.A. (Tristan A.) Hjermann, D.Ø. (Dag Ø.) Ciannelli, L. (Lorenzo) Eikeset, A.M. (Anne Maria) Yaragina, N. (Natalia) Stenseth, N.C. (Nils Christian) |
author_sort |
Durant, J.M. (Joël 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 |
publisher |
Centro Oceanográfico de Baleares |
publishDate |
2013 |
url |
http://hdl.handle.net/10508/8586 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 |
http://www.int-res.com/abstracts/meps/v480/p277-287/ http://hdl.handle.net/10508/8586 Marine Ecology-Progress Series, 480. 2013: 277-287 doi:10.3354/meps10308 |
op_rights |
Atribución-NoComercial-SinDerivadas 3.0 España http://creativecommons.org/licenses/by-nc-nd/3.0/es/ openAccess |
op_rightsnorm |
CC-BY-NC-ND |
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_ |
1766304260013686784 |