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The contiguous domains of Arctic Ocean advection: Trails of life and death

The contiguous domains of Arctic Ocean advection: Trails of life and death
The contiguous domains of Arctic Ocean advection: Trails of life and death
The central Arctic Ocean is not isolated, but tightly connected to the northern Pacific and Atlantic Oceans. Advection of nutrient-, detritus- and plankton-rich waters into the Arctic Ocean forms lengthy contiguous domains that connect subarctic with the arctic biota, supporting both primary production and higher trophic level consumers. In turn, the Arctic influences the physical, chemical and biological oceanography of adjacent subarctic waters through southward fluxes. However, exports of biomass out of the Arctic Ocean into both the Pacific and Atlantic Oceans are thought to be far smaller than the northward influx. Thus, Arctic Ocean ecosystems are net biomass beneficiaries through advection. The biotic impact of Atlantic- and Pacific-origin taxa in arctic waters depends on the total supply of allochthonously-produced biomass, their ability to survive as adults and their (unsuccessful) reproduction in the new environment. Thus, advective transport can be thought of as trails of life and death in the Arctic Ocean. Through direct and indirect (mammal stomachs, models) observations this overview presents information about the advection and fate of zooplankton in the Arctic Ocean, now and in the future. The main zooplankton organisms subjected to advection into and inside the Arctic Ocean are (a) oceanic expatriates of boreal Atlantic and Pacific origin, (b) oceanic Arctic residents and (c) neritic Arctic expatriates. As compared to the Pacific gateway the advective supply of zooplankton biomass through the Atlantic gateways is 2–3 times higher. Advection characterises how the main planktonic organisms interact along the contiguous domains and shows how the subarctic production regimes fuel life in the Arctic Ocean. The main differences in the advective regimes through the Pacific and Atlantic gateways are presented. The Arctic Ocean is, at least in some regions, a net heterotrophic ocean that – during the foreseeable global warming trend – will more and more rely on an increasing local primary production while the advection of zooplankton, as revealed by models, will cease.
0079-6611
42-65
Wassmann, P.
3846fe39-f367-445a-8cda-3ac9a0ca6014
Kosobokova, K.N.
b0159b6b-e030-4a85-94cb-fa3d7e7cf85c
Slagstad, D.
c787df63-5af3-4f64-8ede-9e9744418bdd
Drinkwater, K.F.
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Hopcroft, R.R.
58ee8144-5fb7-4ab4-91c2-1213911f3b01
Moore, S.E.
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Ellingsen, I.
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Nelson, R.J.
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Carmack, E.
3c654a55-b246-46e9-b5ed-5538b9b23d36
Popova, E.
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Berge, J.
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Wassmann, P.
3846fe39-f367-445a-8cda-3ac9a0ca6014
Kosobokova, K.N.
b0159b6b-e030-4a85-94cb-fa3d7e7cf85c
Slagstad, D.
c787df63-5af3-4f64-8ede-9e9744418bdd
Drinkwater, K.F.
6a76b07c-81a5-47cc-9683-e35e645f69ee
Hopcroft, R.R.
58ee8144-5fb7-4ab4-91c2-1213911f3b01
Moore, S.E.
aa11a728-62dd-4aaa-ad0a-d55c99ebefd9
Ellingsen, I.
01cd2c24-0f27-4d09-9afe-c018b07a1c1e
Nelson, R.J.
633ffc1d-40fd-4e4b-b470-efe9a399a6cb
Carmack, E.
3c654a55-b246-46e9-b5ed-5538b9b23d36
Popova, E.
3ea572bd-f37d-4777-894b-b0d86f735820
Berge, J.
9d3dd758-f62d-49c2-96a0-ec41c22cdaa2

Wassmann, P., Kosobokova, K.N., Slagstad, D., Drinkwater, K.F., Hopcroft, R.R., Moore, S.E., Ellingsen, I., Nelson, R.J., Carmack, E., Popova, E. and Berge, J. (2015) The contiguous domains of Arctic Ocean advection: Trails of life and death. Progress in Oceanography, 139, 42-65. (doi:10.1016/j.pocean.2015.06.011).

Record type: Article

Abstract

The central Arctic Ocean is not isolated, but tightly connected to the northern Pacific and Atlantic Oceans. Advection of nutrient-, detritus- and plankton-rich waters into the Arctic Ocean forms lengthy contiguous domains that connect subarctic with the arctic biota, supporting both primary production and higher trophic level consumers. In turn, the Arctic influences the physical, chemical and biological oceanography of adjacent subarctic waters through southward fluxes. However, exports of biomass out of the Arctic Ocean into both the Pacific and Atlantic Oceans are thought to be far smaller than the northward influx. Thus, Arctic Ocean ecosystems are net biomass beneficiaries through advection. The biotic impact of Atlantic- and Pacific-origin taxa in arctic waters depends on the total supply of allochthonously-produced biomass, their ability to survive as adults and their (unsuccessful) reproduction in the new environment. Thus, advective transport can be thought of as trails of life and death in the Arctic Ocean. Through direct and indirect (mammal stomachs, models) observations this overview presents information about the advection and fate of zooplankton in the Arctic Ocean, now and in the future. The main zooplankton organisms subjected to advection into and inside the Arctic Ocean are (a) oceanic expatriates of boreal Atlantic and Pacific origin, (b) oceanic Arctic residents and (c) neritic Arctic expatriates. As compared to the Pacific gateway the advective supply of zooplankton biomass through the Atlantic gateways is 2–3 times higher. Advection characterises how the main planktonic organisms interact along the contiguous domains and shows how the subarctic production regimes fuel life in the Arctic Ocean. The main differences in the advective regimes through the Pacific and Atlantic gateways are presented. The Arctic Ocean is, at least in some regions, a net heterotrophic ocean that – during the foreseeable global warming trend – will more and more rely on an increasing local primary production while the advection of zooplankton, as revealed by models, will cease.

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Published date: December 2015
Organisations: Marine Systems Modelling

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Local EPrints ID: 385289
URI: http://eprints.soton.ac.uk/id/eprint/385289
ISSN: 0079-6611
PURE UUID: dfd68ed0-9845-4257-825e-4ae1b857f232

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Date deposited: 22 Dec 2015 09:52
Last modified: 14 Mar 2024 22:13

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Contributors

Author: P. Wassmann
Author: K.N. Kosobokova
Author: D. Slagstad
Author: K.F. Drinkwater
Author: R.R. Hopcroft
Author: S.E. Moore
Author: I. Ellingsen
Author: R.J. Nelson
Author: E. Carmack
Author: E. Popova
Author: J. Berge

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