Ontogenetic deepening of Northeast Atlantic fish stocks is not driven by fishing exploitation
For many marine fish species, the average size of individuals increases with depth. This phenomenon, first described a century ago, is known as ontogenetic deepening (1, 2). Several mechanisms have been proposed to explain it: optimal foraging; predation avoidance; and different optimal growth tempe...
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Online Access: | https://doi.org/10.1073/pnas.1817295116 http://www.ncbi.nlm.nih.gov/pubmed/30674685 http://ecite.utas.edu.au/130482 |
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ftunivtasecite:oai:ecite.utas.edu.au:130482 2023-05-15T15:27:30+02:00 Ontogenetic deepening of Northeast Atlantic fish stocks is not driven by fishing exploitation Baudron, AR Pecl, G Gardner, C Fernandes, PG Audzijonyte, A 2019 https://doi.org/10.1073/pnas.1817295116 http://www.ncbi.nlm.nih.gov/pubmed/30674685 http://ecite.utas.edu.au/130482 en eng Natl Acad Sciences http://dx.doi.org/10.1073/pnas.1817295116 Baudron, AR and Pecl, G and Gardner, C and Fernandes, PG and Audzijonyte, A, Ontogenetic deepening of Northeast Atlantic fish stocks is not driven by fishing exploitation, Proceedings of the National Academy of Sciences of The United States of America, 116, (7) pp. 2390-2392. ISSN 1091-6490 (2019) [Refereed Article] http://www.ncbi.nlm.nih.gov/pubmed/30674685 http://ecite.utas.edu.au/130482 Environmental Sciences Ecological Applications Ecological Impacts of Climate Change Refereed Article PeerReviewed 2019 ftunivtasecite https://doi.org/10.1073/pnas.1817295116 2020-01-20T23:16:16Z For many marine fish species, the average size of individuals increases with depth. This phenomenon, first described a century ago, is known as ontogenetic deepening (1, 2). Several mechanisms have been proposed to explain it: optimal foraging; predation avoidance; and different optimal growth temperature for larger individuals, causing them to seek deeper and cooler waters to optimize growth and reproduction (3). In their recent paper in PNAS, Frank et al. (4) suggest an alternative explanation. They examined age-structured data from Atlantic cod ( Gadus morhua ) on the eastern Scotian Shelf, a stock that has experienced successive periods of intense, and absence of, fishing. In their study, fishing explained 72% of the variation in the observed age-related deepening, with the remaining variability attributed to ontogenetic deepening. They conclude that higher abundances of large fish in deeper waters is an artifact of greater fishing intensity at shallower depths and question whether ontogenetic deepening is a real ecological phenomenon. Article in Journal/Newspaper atlantic cod Gadus morhua Northeast Atlantic eCite UTAS (University of Tasmania) Proceedings of the National Academy of Sciences 116 7 2390 2392 |
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eCite UTAS (University of Tasmania) |
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ftunivtasecite |
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English |
topic |
Environmental Sciences Ecological Applications Ecological Impacts of Climate Change |
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Environmental Sciences Ecological Applications Ecological Impacts of Climate Change Baudron, AR Pecl, G Gardner, C Fernandes, PG Audzijonyte, A Ontogenetic deepening of Northeast Atlantic fish stocks is not driven by fishing exploitation |
topic_facet |
Environmental Sciences Ecological Applications Ecological Impacts of Climate Change |
description |
For many marine fish species, the average size of individuals increases with depth. This phenomenon, first described a century ago, is known as ontogenetic deepening (1, 2). Several mechanisms have been proposed to explain it: optimal foraging; predation avoidance; and different optimal growth temperature for larger individuals, causing them to seek deeper and cooler waters to optimize growth and reproduction (3). In their recent paper in PNAS, Frank et al. (4) suggest an alternative explanation. They examined age-structured data from Atlantic cod ( Gadus morhua ) on the eastern Scotian Shelf, a stock that has experienced successive periods of intense, and absence of, fishing. In their study, fishing explained 72% of the variation in the observed age-related deepening, with the remaining variability attributed to ontogenetic deepening. They conclude that higher abundances of large fish in deeper waters is an artifact of greater fishing intensity at shallower depths and question whether ontogenetic deepening is a real ecological phenomenon. |
format |
Article in Journal/Newspaper |
author |
Baudron, AR Pecl, G Gardner, C Fernandes, PG Audzijonyte, A |
author_facet |
Baudron, AR Pecl, G Gardner, C Fernandes, PG Audzijonyte, A |
author_sort |
Baudron, AR |
title |
Ontogenetic deepening of Northeast Atlantic fish stocks is not driven by fishing exploitation |
title_short |
Ontogenetic deepening of Northeast Atlantic fish stocks is not driven by fishing exploitation |
title_full |
Ontogenetic deepening of Northeast Atlantic fish stocks is not driven by fishing exploitation |
title_fullStr |
Ontogenetic deepening of Northeast Atlantic fish stocks is not driven by fishing exploitation |
title_full_unstemmed |
Ontogenetic deepening of Northeast Atlantic fish stocks is not driven by fishing exploitation |
title_sort |
ontogenetic deepening of northeast atlantic fish stocks is not driven by fishing exploitation |
publisher |
Natl Acad Sciences |
publishDate |
2019 |
url |
https://doi.org/10.1073/pnas.1817295116 http://www.ncbi.nlm.nih.gov/pubmed/30674685 http://ecite.utas.edu.au/130482 |
genre |
atlantic cod Gadus morhua Northeast Atlantic |
genre_facet |
atlantic cod Gadus morhua Northeast Atlantic |
op_relation |
http://dx.doi.org/10.1073/pnas.1817295116 Baudron, AR and Pecl, G and Gardner, C and Fernandes, PG and Audzijonyte, A, Ontogenetic deepening of Northeast Atlantic fish stocks is not driven by fishing exploitation, Proceedings of the National Academy of Sciences of The United States of America, 116, (7) pp. 2390-2392. ISSN 1091-6490 (2019) [Refereed Article] http://www.ncbi.nlm.nih.gov/pubmed/30674685 http://ecite.utas.edu.au/130482 |
op_doi |
https://doi.org/10.1073/pnas.1817295116 |
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Proceedings of the National Academy of Sciences |
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116 |
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7 |
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2390 |
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2392 |
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1766357930932699136 |