A millennium of trophic stability in Atlantic cod (Gadus morhua): transition to a lower and converging trophic niche in modern times
Abstract Stable isotope analyses of zooarchaeological material can be used to examine ecological variability in exploited species at centennial to millennial scales. Climate change is a notable driver of marine ecosystem change, although historical fishing is also likely to have impacted past marine...
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ftdoajarticles:oai:doaj.org/article:827c9a367ff34453928492d965a3e08a 2023-05-15T15:26:39+02:00 A millennium of trophic stability in Atlantic cod (Gadus morhua): transition to a lower and converging trophic niche in modern times Guðbjörg Ásta Ólafsdóttir Ragnar Edvardsson Sandra Timsic Ramona Harrison William P. Patterson 2021-06-01T00:00:00Z https://doi.org/10.1038/s41598-021-92243-7 https://doaj.org/article/827c9a367ff34453928492d965a3e08a EN eng Nature Portfolio https://doi.org/10.1038/s41598-021-92243-7 https://doaj.org/toc/2045-2322 doi:10.1038/s41598-021-92243-7 2045-2322 https://doaj.org/article/827c9a367ff34453928492d965a3e08a Scientific Reports, Vol 11, Iss 1, Pp 1-11 (2021) Medicine R Science Q article 2021 ftdoajarticles https://doi.org/10.1038/s41598-021-92243-7 2022-12-31T05:45:29Z Abstract Stable isotope analyses of zooarchaeological material can be used to examine ecological variability in exploited species at centennial to millennial scales. Climate change is a notable driver of marine ecosystem change, although historical fishing is also likely to have impacted past marine systems. Fishing removes the oldest and largest individuals and may thereby result in shorter trophic pathways and reduced niche width of predatory fish species. In the current study we examine the trophic niche of Atlantic cod, haddock and Atlantic wolffish, in the last millennium using δ13C and δ15N values of bone collagen. We report a lower trophic level of Atlantic cod and haddock but higher level of wolffish in present times, following centuries at consistent and higher trophic levels of Atlantic cod. This results in a concurrent converging trophic niche of the demersal fish. We suggest that the current data set provides a valuable historical baseline facilitating interpretation of current variability in the trophic ecology of northern demersal fish. Article in Journal/Newspaper atlantic cod Gadus morhua Directory of Open Access Journals: DOAJ Articles Scientific Reports 11 1 |
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Medicine R Science Q |
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Medicine R Science Q Guðbjörg Ásta Ólafsdóttir Ragnar Edvardsson Sandra Timsic Ramona Harrison William P. Patterson A millennium of trophic stability in Atlantic cod (Gadus morhua): transition to a lower and converging trophic niche in modern times |
topic_facet |
Medicine R Science Q |
description |
Abstract Stable isotope analyses of zooarchaeological material can be used to examine ecological variability in exploited species at centennial to millennial scales. Climate change is a notable driver of marine ecosystem change, although historical fishing is also likely to have impacted past marine systems. Fishing removes the oldest and largest individuals and may thereby result in shorter trophic pathways and reduced niche width of predatory fish species. In the current study we examine the trophic niche of Atlantic cod, haddock and Atlantic wolffish, in the last millennium using δ13C and δ15N values of bone collagen. We report a lower trophic level of Atlantic cod and haddock but higher level of wolffish in present times, following centuries at consistent and higher trophic levels of Atlantic cod. This results in a concurrent converging trophic niche of the demersal fish. We suggest that the current data set provides a valuable historical baseline facilitating interpretation of current variability in the trophic ecology of northern demersal fish. |
format |
Article in Journal/Newspaper |
author |
Guðbjörg Ásta Ólafsdóttir Ragnar Edvardsson Sandra Timsic Ramona Harrison William P. Patterson |
author_facet |
Guðbjörg Ásta Ólafsdóttir Ragnar Edvardsson Sandra Timsic Ramona Harrison William P. Patterson |
author_sort |
Guðbjörg Ásta Ólafsdóttir |
title |
A millennium of trophic stability in Atlantic cod (Gadus morhua): transition to a lower and converging trophic niche in modern times |
title_short |
A millennium of trophic stability in Atlantic cod (Gadus morhua): transition to a lower and converging trophic niche in modern times |
title_full |
A millennium of trophic stability in Atlantic cod (Gadus morhua): transition to a lower and converging trophic niche in modern times |
title_fullStr |
A millennium of trophic stability in Atlantic cod (Gadus morhua): transition to a lower and converging trophic niche in modern times |
title_full_unstemmed |
A millennium of trophic stability in Atlantic cod (Gadus morhua): transition to a lower and converging trophic niche in modern times |
title_sort |
millennium of trophic stability in atlantic cod (gadus morhua): transition to a lower and converging trophic niche in modern times |
publisher |
Nature Portfolio |
publishDate |
2021 |
url |
https://doi.org/10.1038/s41598-021-92243-7 https://doaj.org/article/827c9a367ff34453928492d965a3e08a |
genre |
atlantic cod Gadus morhua |
genre_facet |
atlantic cod Gadus morhua |
op_source |
Scientific Reports, Vol 11, Iss 1, Pp 1-11 (2021) |
op_relation |
https://doi.org/10.1038/s41598-021-92243-7 https://doaj.org/toc/2045-2322 doi:10.1038/s41598-021-92243-7 2045-2322 https://doaj.org/article/827c9a367ff34453928492d965a3e08a |
op_doi |
https://doi.org/10.1038/s41598-021-92243-7 |
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Scientific Reports |
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11 |
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1 |
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1766357128369405952 |