The rise of a marine generalist predator and the fall of beta diversity
Determining the importance of physical and biological drivers in shaping biodiversity in diverse ecosystems remains a global challenge. Advancements have been made towards this end in large marine ecosystems with several studies suggesting environmental forcing as the primary driver. However, both e...
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Online Access: | https://hdl.handle.net/10037/19187 https://doi.org/10.1111/gcb.15027 |
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ftunivtroemsoe:oai:munin.uit.no:10037/19187 2023-05-15T15:39:10+02:00 The rise of a marine generalist predator and the fall of beta diversity Ellingsen, Kari Yoccoz, Nigel Tveraa, Torkild Frank, Kenneth T. Johannesen, Edda Anderson, Marti J. Dolgov, Andrey V. Shackell, Nancy L. 2020-03-17 https://hdl.handle.net/10037/19187 https://doi.org/10.1111/gcb.15027 eng eng Wiley Global Change Biology Norges forskningsråd: 234359 Egen institusjon: Norwegian institute for nature research Andre: Framsenteret info:eu-repo/grantAgreement/RCN/MARINFORSK/234359/Norway/How do a dominant predator and climate shape fish biodiversity over space and time in large marine ecosystems?// https://doi.org/10.1111/gcb.15027 Ellingsen KE, Yoccoz NG, Tveraa T, Frank KT, Johannesen E, Anderson MJ, Dolgov AV, Shackell. The rise of a marine generalist predator and the fall of beta diversity. Global Change Biology. 2020;26(5):2897-2907 FRIDAID 1802264 doi:10.1111/gcb.15027 1354-1013 1365-2486 https://hdl.handle.net/10037/19187 openAccess Copyright 2020 The Author(s) VDP::Matematikk og naturvitenskap: 400::Zoologiske og botaniske fag: 480 VDP::Mathematics and natural scienses: 400::Zoology and botany: 480 Journal article Tidsskriftartikkel Peer reviewed publishedVersion 2020 ftunivtroemsoe https://doi.org/10.1111/gcb.15027 2021-06-25T17:57:37Z Determining the importance of physical and biological drivers in shaping biodiversity in diverse ecosystems remains a global challenge. Advancements have been made towards this end in large marine ecosystems with several studies suggesting environmental forcing as the primary driver. However, both empirical and theoretical studies point to additional drivers of changes in diversity involving trophic interactions and, in particular, predation. Moreover, a more integrated but less common approach to the assessment of biodiversity changes involves analyses of spatial β diversity, whereas most studies to date assess only changes in species richness (α diversity). Recent research has established that when cod, a dominant generalist predator, was overfished and collapsed in a northwest Atlantic food web, spatial β diversity increased; that is, the spatial structure of the fish assemblage became increasingly heterogeneous. If cod were to recover, would this situation be reversible, given the inherent complexity and non‐linear dynamics that typify such systems? A dramatic increase of cod in an ecologically similar large marine ecosystem may provide an answer. Here we show that spatial β diversity of fish assemblages in the Barents Sea decreased with increasing cod abundance, while decadal scale changes in temperature did not play a significant role. These findings indicate a reversibility of the fish assemblage structure in response to changing levels of an apex predator and highlight the frequently overlooked importance of trophic interactions in determining large‐scale biodiversity patterns. As increased cod abundance was largely driven by changes in fisheries management, our study also shows that management policies and practices, particularly those involving apex predators, can have a strong effect in shaping spatial diversity patterns, and one should not restrict the focus to effects of climate change alone. Article in Journal/Newspaper Barents Sea Northwest Atlantic University of Tromsø: Munin Open Research Archive Barents Sea Global Change Biology 26 5 2897 2907 |
institution |
Open Polar |
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University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
topic |
VDP::Matematikk og naturvitenskap: 400::Zoologiske og botaniske fag: 480 VDP::Mathematics and natural scienses: 400::Zoology and botany: 480 |
spellingShingle |
VDP::Matematikk og naturvitenskap: 400::Zoologiske og botaniske fag: 480 VDP::Mathematics and natural scienses: 400::Zoology and botany: 480 Ellingsen, Kari Yoccoz, Nigel Tveraa, Torkild Frank, Kenneth T. Johannesen, Edda Anderson, Marti J. Dolgov, Andrey V. Shackell, Nancy L. The rise of a marine generalist predator and the fall of beta diversity |
topic_facet |
VDP::Matematikk og naturvitenskap: 400::Zoologiske og botaniske fag: 480 VDP::Mathematics and natural scienses: 400::Zoology and botany: 480 |
description |
Determining the importance of physical and biological drivers in shaping biodiversity in diverse ecosystems remains a global challenge. Advancements have been made towards this end in large marine ecosystems with several studies suggesting environmental forcing as the primary driver. However, both empirical and theoretical studies point to additional drivers of changes in diversity involving trophic interactions and, in particular, predation. Moreover, a more integrated but less common approach to the assessment of biodiversity changes involves analyses of spatial β diversity, whereas most studies to date assess only changes in species richness (α diversity). Recent research has established that when cod, a dominant generalist predator, was overfished and collapsed in a northwest Atlantic food web, spatial β diversity increased; that is, the spatial structure of the fish assemblage became increasingly heterogeneous. If cod were to recover, would this situation be reversible, given the inherent complexity and non‐linear dynamics that typify such systems? A dramatic increase of cod in an ecologically similar large marine ecosystem may provide an answer. Here we show that spatial β diversity of fish assemblages in the Barents Sea decreased with increasing cod abundance, while decadal scale changes in temperature did not play a significant role. These findings indicate a reversibility of the fish assemblage structure in response to changing levels of an apex predator and highlight the frequently overlooked importance of trophic interactions in determining large‐scale biodiversity patterns. As increased cod abundance was largely driven by changes in fisheries management, our study also shows that management policies and practices, particularly those involving apex predators, can have a strong effect in shaping spatial diversity patterns, and one should not restrict the focus to effects of climate change alone. |
format |
Article in Journal/Newspaper |
author |
Ellingsen, Kari Yoccoz, Nigel Tveraa, Torkild Frank, Kenneth T. Johannesen, Edda Anderson, Marti J. Dolgov, Andrey V. Shackell, Nancy L. |
author_facet |
Ellingsen, Kari Yoccoz, Nigel Tveraa, Torkild Frank, Kenneth T. Johannesen, Edda Anderson, Marti J. Dolgov, Andrey V. Shackell, Nancy L. |
author_sort |
Ellingsen, Kari |
title |
The rise of a marine generalist predator and the fall of beta diversity |
title_short |
The rise of a marine generalist predator and the fall of beta diversity |
title_full |
The rise of a marine generalist predator and the fall of beta diversity |
title_fullStr |
The rise of a marine generalist predator and the fall of beta diversity |
title_full_unstemmed |
The rise of a marine generalist predator and the fall of beta diversity |
title_sort |
rise of a marine generalist predator and the fall of beta diversity |
publisher |
Wiley |
publishDate |
2020 |
url |
https://hdl.handle.net/10037/19187 https://doi.org/10.1111/gcb.15027 |
geographic |
Barents Sea |
geographic_facet |
Barents Sea |
genre |
Barents Sea Northwest Atlantic |
genre_facet |
Barents Sea Northwest Atlantic |
op_relation |
Global Change Biology Norges forskningsråd: 234359 Egen institusjon: Norwegian institute for nature research Andre: Framsenteret info:eu-repo/grantAgreement/RCN/MARINFORSK/234359/Norway/How do a dominant predator and climate shape fish biodiversity over space and time in large marine ecosystems?// https://doi.org/10.1111/gcb.15027 Ellingsen KE, Yoccoz NG, Tveraa T, Frank KT, Johannesen E, Anderson MJ, Dolgov AV, Shackell. The rise of a marine generalist predator and the fall of beta diversity. Global Change Biology. 2020;26(5):2897-2907 FRIDAID 1802264 doi:10.1111/gcb.15027 1354-1013 1365-2486 https://hdl.handle.net/10037/19187 |
op_rights |
openAccess Copyright 2020 The Author(s) |
op_doi |
https://doi.org/10.1111/gcb.15027 |
container_title |
Global Change Biology |
container_volume |
26 |
container_issue |
5 |
container_start_page |
2897 |
op_container_end_page |
2907 |
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1766370621241950208 |