Nutrient-driven poleward expansion of the Northeast Atlantic mackerel (Scomber scombrus) stock: A new hypothesis
The Northeast Atlantic mackerel (Scomber scombrus) stock has increased and expanded its summer feeding migration west- and northwards since 2006, entailing large geopolitical challenges for the countries harvesting this species. A common perspective is that climatic warming opens up new regions for...
Published in: | Elementa: Science of the Anthropocene |
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ftoslouniv:oai:www.duo.uio.no:10852/53073 2023-05-15T16:46:50+02:00 Nutrient-driven poleward expansion of the Northeast Atlantic mackerel (Scomber scombrus) stock: A new hypothesis Pacariz, Selma V. Hátún, Hjálmar Jacobsen, Jan Arge Johnson, Clare Eliasen, Solva Rey, Francisco 2016-10-25T12:37:08Z http://hdl.handle.net/10852/53073 http://urn.nb.no/URN:NBN:no-56382 https://doi.org/10.12952/journal.elementa.000105 EN eng BioOne http://urn.nb.no/URN:NBN:no-56382 Pacariz, Selma V. Hátún, Hjálmar Jacobsen, Jan Arge Johnson, Clare Eliasen, Solva Rey, Francisco . Nutrient-driven poleward expansion of the Northeast Atlantic mackerel (Scomber scombrus) stock: A new hypothesis. Elementa: Science of the Anthropocene. 2016, 2016 http://hdl.handle.net/10852/53073 1394347 info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Elementa: Science of the Anthropocene&rft.volume=2016&rft.spage=&rft.date=2016 Elementa: Science of the Anthropocene 4 13 http://dx.doi.org/10.12952/journal.elementa.000105 URN:NBN:no-56382 Fulltext https://www.duo.uio.no/bitstream/handle/10852/53073/1/journal.elementa.000105.pdf Attribution 3.0 United States https://creativecommons.org/licenses/by/3.0/us/ CC-BY 2325-1026 VDP::Fiskerifag: 920 Journal article Tidsskriftartikkel Peer reviewed PublishedVersion 2016 ftoslouniv https://doi.org/10.12952/journal.elementa.000105 2020-06-21T08:50:03Z The Northeast Atlantic mackerel (Scomber scombrus) stock has increased and expanded its summer feeding migration west- and northwards since 2006, entailing large geopolitical challenges for the countries harvesting this species. A common perspective is that climatic warming opens up new regions for biota in the north. It has also been suggested that the presently large pelagic fish stocks deplete prey resources in the eastern North Atlantic during their summer feeding phase, forcing the stocks west towards the Irminger Sea in their search for food. Here, we suggest that the declining nutrient (silicate) concentrations observed along the northern European continental slope reduce primary and thus secondary production, exacerbating food scarceness in the east and adding to the incentive to migrate westward. The new westward feeding route requires that the fish cross the Iceland Basin, which during the summer season quickly becomes nutrient-depleted and thus might act as a barrier to migration after the spring bloom. Using mackerel and zooplankton abundance data from the International Ecosystem Summer Surveys in the Nordic Seas, we suggest that the oligotrophic waters in the central Iceland Basin force the fish to migrate through a narrow ‘corridor’ along the south Iceland shelf, where nutrients are replenished and both primary and secondary production are higher. Article in Journal/Newspaper Iceland Nordic Seas North Atlantic Northeast Atlantic Universitet i Oslo: Digitale utgivelser ved UiO (DUO) Irminger Sea ENVELOPE(-34.041,-34.041,63.054,63.054) Elementa: Science of the Anthropocene 4 000105 |
institution |
Open Polar |
collection |
Universitet i Oslo: Digitale utgivelser ved UiO (DUO) |
op_collection_id |
ftoslouniv |
language |
English |
topic |
VDP::Fiskerifag: 920 |
spellingShingle |
VDP::Fiskerifag: 920 Pacariz, Selma V. Hátún, Hjálmar Jacobsen, Jan Arge Johnson, Clare Eliasen, Solva Rey, Francisco Nutrient-driven poleward expansion of the Northeast Atlantic mackerel (Scomber scombrus) stock: A new hypothesis |
topic_facet |
VDP::Fiskerifag: 920 |
description |
The Northeast Atlantic mackerel (Scomber scombrus) stock has increased and expanded its summer feeding migration west- and northwards since 2006, entailing large geopolitical challenges for the countries harvesting this species. A common perspective is that climatic warming opens up new regions for biota in the north. It has also been suggested that the presently large pelagic fish stocks deplete prey resources in the eastern North Atlantic during their summer feeding phase, forcing the stocks west towards the Irminger Sea in their search for food. Here, we suggest that the declining nutrient (silicate) concentrations observed along the northern European continental slope reduce primary and thus secondary production, exacerbating food scarceness in the east and adding to the incentive to migrate westward. The new westward feeding route requires that the fish cross the Iceland Basin, which during the summer season quickly becomes nutrient-depleted and thus might act as a barrier to migration after the spring bloom. Using mackerel and zooplankton abundance data from the International Ecosystem Summer Surveys in the Nordic Seas, we suggest that the oligotrophic waters in the central Iceland Basin force the fish to migrate through a narrow ‘corridor’ along the south Iceland shelf, where nutrients are replenished and both primary and secondary production are higher. |
format |
Article in Journal/Newspaper |
author |
Pacariz, Selma V. Hátún, Hjálmar Jacobsen, Jan Arge Johnson, Clare Eliasen, Solva Rey, Francisco |
author_facet |
Pacariz, Selma V. Hátún, Hjálmar Jacobsen, Jan Arge Johnson, Clare Eliasen, Solva Rey, Francisco |
author_sort |
Pacariz, Selma V. |
title |
Nutrient-driven poleward expansion of the Northeast Atlantic mackerel (Scomber scombrus) stock: A new hypothesis |
title_short |
Nutrient-driven poleward expansion of the Northeast Atlantic mackerel (Scomber scombrus) stock: A new hypothesis |
title_full |
Nutrient-driven poleward expansion of the Northeast Atlantic mackerel (Scomber scombrus) stock: A new hypothesis |
title_fullStr |
Nutrient-driven poleward expansion of the Northeast Atlantic mackerel (Scomber scombrus) stock: A new hypothesis |
title_full_unstemmed |
Nutrient-driven poleward expansion of the Northeast Atlantic mackerel (Scomber scombrus) stock: A new hypothesis |
title_sort |
nutrient-driven poleward expansion of the northeast atlantic mackerel (scomber scombrus) stock: a new hypothesis |
publisher |
BioOne |
publishDate |
2016 |
url |
http://hdl.handle.net/10852/53073 http://urn.nb.no/URN:NBN:no-56382 https://doi.org/10.12952/journal.elementa.000105 |
long_lat |
ENVELOPE(-34.041,-34.041,63.054,63.054) |
geographic |
Irminger Sea |
geographic_facet |
Irminger Sea |
genre |
Iceland Nordic Seas North Atlantic Northeast Atlantic |
genre_facet |
Iceland Nordic Seas North Atlantic Northeast Atlantic |
op_source |
2325-1026 |
op_relation |
http://urn.nb.no/URN:NBN:no-56382 Pacariz, Selma V. Hátún, Hjálmar Jacobsen, Jan Arge Johnson, Clare Eliasen, Solva Rey, Francisco . Nutrient-driven poleward expansion of the Northeast Atlantic mackerel (Scomber scombrus) stock: A new hypothesis. Elementa: Science of the Anthropocene. 2016, 2016 http://hdl.handle.net/10852/53073 1394347 info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Elementa: Science of the Anthropocene&rft.volume=2016&rft.spage=&rft.date=2016 Elementa: Science of the Anthropocene 4 13 http://dx.doi.org/10.12952/journal.elementa.000105 URN:NBN:no-56382 Fulltext https://www.duo.uio.no/bitstream/handle/10852/53073/1/journal.elementa.000105.pdf |
op_rights |
Attribution 3.0 United States https://creativecommons.org/licenses/by/3.0/us/ |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.12952/journal.elementa.000105 |
container_title |
Elementa: Science of the Anthropocene |
container_volume |
4 |
container_start_page |
000105 |
_version_ |
1766036939762302976 |