Increased natural mortality at low abundance can generate an Allee effect in a marine fish
Negative density-dependent regulation of population dynamics promotes population growth at low abundance and is therefore vital for recovery following depletion. Inversely, any process that reduces the compensatory density-dependence of population growth can negatively affect recovery. Here, we show...
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Online Access: | http://dx.doi.org/10.1098/rsos.140075 https://royalsocietypublishing.org/doi/pdf/10.1098/rsos.140075 https://royalsocietypublishing.org/doi/full-xml/10.1098/rsos.140075 |
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crroyalsociety:10.1098/rsos.140075 2024-06-02T08:03:11+00:00 Increased natural mortality at low abundance can generate an Allee effect in a marine fish Kuparinen, Anna Hutchings, Jeffrey A. 2014 http://dx.doi.org/10.1098/rsos.140075 https://royalsocietypublishing.org/doi/pdf/10.1098/rsos.140075 https://royalsocietypublishing.org/doi/full-xml/10.1098/rsos.140075 en eng The Royal Society https://royalsociety.org/journals/ethics-policies/data-sharing-mining/ Royal Society Open Science volume 1, issue 2, page 140075 ISSN 2054-5703 journal-article 2014 crroyalsociety https://doi.org/10.1098/rsos.140075 2024-05-07T14:16:14Z Negative density-dependent regulation of population dynamics promotes population growth at low abundance and is therefore vital for recovery following depletion. Inversely, any process that reduces the compensatory density-dependence of population growth can negatively affect recovery. Here, we show that increased adult mortality at low abundance can reverse compensatory population dynamics into its opposite—a demographic Allee effect. Northwest Atlantic cod ( Gadus morhua ) stocks collapsed dramatically in the early 1990s and have since shown little sign of recovery. Many experienced dramatic increases in natural mortality, ostensibly attributable in some populations to increased predation by seals. Our findings show that increased natural mortality of a magnitude observed for overfished cod stocks has been more than sufficient to fundamentally alter the dynamics of density-dependent population regulation. The demographic Allee effect generated by these changes can slow down or even impede the recovery of depleted populations even in the absence of fishing. Article in Journal/Newspaper atlantic cod Gadus morhua Northwest Atlantic The Royal Society Royal Society Open Science 1 2 140075 |
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English |
description |
Negative density-dependent regulation of population dynamics promotes population growth at low abundance and is therefore vital for recovery following depletion. Inversely, any process that reduces the compensatory density-dependence of population growth can negatively affect recovery. Here, we show that increased adult mortality at low abundance can reverse compensatory population dynamics into its opposite—a demographic Allee effect. Northwest Atlantic cod ( Gadus morhua ) stocks collapsed dramatically in the early 1990s and have since shown little sign of recovery. Many experienced dramatic increases in natural mortality, ostensibly attributable in some populations to increased predation by seals. Our findings show that increased natural mortality of a magnitude observed for overfished cod stocks has been more than sufficient to fundamentally alter the dynamics of density-dependent population regulation. The demographic Allee effect generated by these changes can slow down or even impede the recovery of depleted populations even in the absence of fishing. |
format |
Article in Journal/Newspaper |
author |
Kuparinen, Anna Hutchings, Jeffrey A. |
spellingShingle |
Kuparinen, Anna Hutchings, Jeffrey A. Increased natural mortality at low abundance can generate an Allee effect in a marine fish |
author_facet |
Kuparinen, Anna Hutchings, Jeffrey A. |
author_sort |
Kuparinen, Anna |
title |
Increased natural mortality at low abundance can generate an Allee effect in a marine fish |
title_short |
Increased natural mortality at low abundance can generate an Allee effect in a marine fish |
title_full |
Increased natural mortality at low abundance can generate an Allee effect in a marine fish |
title_fullStr |
Increased natural mortality at low abundance can generate an Allee effect in a marine fish |
title_full_unstemmed |
Increased natural mortality at low abundance can generate an Allee effect in a marine fish |
title_sort |
increased natural mortality at low abundance can generate an allee effect in a marine fish |
publisher |
The Royal Society |
publishDate |
2014 |
url |
http://dx.doi.org/10.1098/rsos.140075 https://royalsocietypublishing.org/doi/pdf/10.1098/rsos.140075 https://royalsocietypublishing.org/doi/full-xml/10.1098/rsos.140075 |
genre |
atlantic cod Gadus morhua Northwest Atlantic |
genre_facet |
atlantic cod Gadus morhua Northwest Atlantic |
op_source |
Royal Society Open Science volume 1, issue 2, page 140075 ISSN 2054-5703 |
op_rights |
https://royalsociety.org/journals/ethics-policies/data-sharing-mining/ |
op_doi |
https://doi.org/10.1098/rsos.140075 |
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Royal Society Open Science |
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2 |
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140075 |
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1800747656962637824 |