Data from: The role of a dominant predator in shaping biodiversity over space and time in a marine ecosystem
1. Exploitation of living marine resources has resulted in major changes to populations of targeted species and functional groups of large-bodied species in the ocean. However, the effects of overfishing and collapse of large top predators on the broad-scale biodiversity of oceanic ecosystems remain...
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ftdans:oai:easy.dans.knaw.nl:easy-dataset:89470 2023-07-02T03:31:39+02:00 Data from: The role of a dominant predator in shaping biodiversity over space and time in a marine ecosystem Ellingsen, Kari Elsa Anderson, Marti J. Shackell, Nancy L. Tveraa, Torkild Yoccoz, Nigel G. Frank, Kenneth T. 2015-05-18T18:58:29.000+02:00 http://nbn-resolving.org/urn:nbn:nl:ui:13-jc-8hck https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:89470 unknown doi:10.5061/dryad.76sv3/1 doi:10.1111/1365-2656.12396 PMID:25981204 http://nbn-resolving.org/urn:nbn:nl:ui:13-jc-8hck doi:10.5061/dryad.76sv3 https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:89470 OPEN_ACCESS: The data are archived in Easy, they are accessible elsewhere through the DOI https://dans.knaw.nl/en/about/organisation-and-policy/legal-information/DANSLicence.pdf Life sciences medicine and health care 2015 ftdans https://doi.org/10.5061/dryad.76sv3/110.1111/1365-2656.1239610.5061/dryad.76sv3 2023-06-13T13:19:18Z 1. Exploitation of living marine resources has resulted in major changes to populations of targeted species and functional groups of large-bodied species in the ocean. However, the effects of overfishing and collapse of large top predators on the broad-scale biodiversity of oceanic ecosystems remain largely unexplored. 2. Populations of the Atlantic cod (Gadus morhua) were overfished and several collapsed in the early 1990s across Atlantic Canada, providing a unique opportunity to study potential ecosystem-level effects of the reduction of a dominant predator on fish biodiversity, and to identify how such effects might interact with other environmental factors, such as changes in climate, over time. 3. We combined causal modelling with model selection and multimodel inference to analyse 41 years of fishery-independent survey data (1970–2010) and quantify ecosystem-level effects of overfishing and climate variation on the biodiversity of fishes across a broad area (172 000 km2) of the Scotian Shelf. 4. We found that alpha and beta diversity increased with decreases in cod occurrence; fish communities were less homogeneous and more variable in systems where cod no longer dominated. These effects were most pronounced in the colder north-eastern parts of the Scotian Shelf. 5. Our results provide strong evidence that intensive harvesting (and collapse) of marine apex predators can have large impacts on biodiversity, with far-reaching consequences for ecological stability across an entire ecosystem. Other/Unknown Material atlantic cod Gadus morhua Data Archiving and Networked Services (DANS): EASY (KNAW - Koninklijke Nederlandse Akademie van Wetenschappen) Canada |
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Open Polar |
collection |
Data Archiving and Networked Services (DANS): EASY (KNAW - Koninklijke Nederlandse Akademie van Wetenschappen) |
op_collection_id |
ftdans |
language |
unknown |
topic |
Life sciences medicine and health care |
spellingShingle |
Life sciences medicine and health care Ellingsen, Kari Elsa Anderson, Marti J. Shackell, Nancy L. Tveraa, Torkild Yoccoz, Nigel G. Frank, Kenneth T. Data from: The role of a dominant predator in shaping biodiversity over space and time in a marine ecosystem |
topic_facet |
Life sciences medicine and health care |
description |
1. Exploitation of living marine resources has resulted in major changes to populations of targeted species and functional groups of large-bodied species in the ocean. However, the effects of overfishing and collapse of large top predators on the broad-scale biodiversity of oceanic ecosystems remain largely unexplored. 2. Populations of the Atlantic cod (Gadus morhua) were overfished and several collapsed in the early 1990s across Atlantic Canada, providing a unique opportunity to study potential ecosystem-level effects of the reduction of a dominant predator on fish biodiversity, and to identify how such effects might interact with other environmental factors, such as changes in climate, over time. 3. We combined causal modelling with model selection and multimodel inference to analyse 41 years of fishery-independent survey data (1970–2010) and quantify ecosystem-level effects of overfishing and climate variation on the biodiversity of fishes across a broad area (172 000 km2) of the Scotian Shelf. 4. We found that alpha and beta diversity increased with decreases in cod occurrence; fish communities were less homogeneous and more variable in systems where cod no longer dominated. These effects were most pronounced in the colder north-eastern parts of the Scotian Shelf. 5. Our results provide strong evidence that intensive harvesting (and collapse) of marine apex predators can have large impacts on biodiversity, with far-reaching consequences for ecological stability across an entire ecosystem. |
author |
Ellingsen, Kari Elsa Anderson, Marti J. Shackell, Nancy L. Tveraa, Torkild Yoccoz, Nigel G. Frank, Kenneth T. |
author_facet |
Ellingsen, Kari Elsa Anderson, Marti J. Shackell, Nancy L. Tveraa, Torkild Yoccoz, Nigel G. Frank, Kenneth T. |
author_sort |
Ellingsen, Kari Elsa |
title |
Data from: The role of a dominant predator in shaping biodiversity over space and time in a marine ecosystem |
title_short |
Data from: The role of a dominant predator in shaping biodiversity over space and time in a marine ecosystem |
title_full |
Data from: The role of a dominant predator in shaping biodiversity over space and time in a marine ecosystem |
title_fullStr |
Data from: The role of a dominant predator in shaping biodiversity over space and time in a marine ecosystem |
title_full_unstemmed |
Data from: The role of a dominant predator in shaping biodiversity over space and time in a marine ecosystem |
title_sort |
data from: the role of a dominant predator in shaping biodiversity over space and time in a marine ecosystem |
publishDate |
2015 |
url |
http://nbn-resolving.org/urn:nbn:nl:ui:13-jc-8hck https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:89470 |
geographic |
Canada |
geographic_facet |
Canada |
genre |
atlantic cod Gadus morhua |
genre_facet |
atlantic cod Gadus morhua |
op_relation |
doi:10.5061/dryad.76sv3/1 doi:10.1111/1365-2656.12396 PMID:25981204 http://nbn-resolving.org/urn:nbn:nl:ui:13-jc-8hck doi:10.5061/dryad.76sv3 https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:89470 |
op_rights |
OPEN_ACCESS: The data are archived in Easy, they are accessible elsewhere through the DOI https://dans.knaw.nl/en/about/organisation-and-policy/legal-information/DANSLicence.pdf |
op_doi |
https://doi.org/10.5061/dryad.76sv3/110.1111/1365-2656.1239610.5061/dryad.76sv3 |
_version_ |
1770271029105524736 |