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Unexpected fish and squid in the central Arctic deep scattering layer

Snoeijs-Leijonmalm, Pauline and Flores, Hauke and Sakinan, Serdar and Hildebrandt, Nicole and Svenson, Anders and Castellani, Giulia and Vane, Kim and Mark, Felix C. and Heuze, Celine and Tippenhauer, Sandra and Niehoff, Barbara and Hjelm, Joakim and Hentati Sundberg, Jonas and Schaafsma, Fokje and Engelmann, Ronny (2022). Unexpected fish and squid in the central Arctic deep scattering layer. Science Advances. 8 :7 , eabj7536
[Research article]

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Abstract

The retreating ice cover of the Central Arctic Ocean (CAO) fuels speculations on future fisheries. However, very little is known about the existence of harvestable fish stocks in this 3.3 million-square kilometer ecosystem around the North Pole. Crossing the Eurasian Basin, we documented an uninterrupted 3170-kilometer-long deep scattering layer (DSL) with zooplankton and small fish in the Atlantic water layer at 100- to 500-meter depth. Diel vertical migration of this central Arctic DSL was lacking most of the year when daily light variation was absent. Unexpectedly, the DSL also contained low abundances of Atlantic cod, along with lanternfish, armhook squid, and Arctic endemic ice cod. The Atlantic cod originated from Norwegian spawning grounds and had lived in Arctic water temperature for up to 6 years.The potential fish abundance was far below commercially sustainable levels and is expected to remain so because of the low productivity of the CAO.

Authors/Creators:Snoeijs-Leijonmalm, Pauline and Flores, Hauke and Sakinan, Serdar and Hildebrandt, Nicole and Svenson, Anders and Castellani, Giulia and Vane, Kim and Mark, Felix C. and Heuze, Celine and Tippenhauer, Sandra and Niehoff, Barbara and Hjelm, Joakim and Hentati Sundberg, Jonas and Schaafsma, Fokje and Engelmann, Ronny
Title:Unexpected fish and squid in the central Arctic deep scattering layer
Series Name/Journal:Science Advances
Year of publishing :2022
Volume:8
Number:7
Article number:eabj7536
Number of Pages:17
Publisher:AMER ASSOC ADVANCEMENT SCIENCE
ISSN:2375-2548
Language:English
Publication Type:Research article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution-Noncommercial 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Fish and Aquacultural Science
(A) Swedish standard research categories 2011 > 1 Natural sciences > 105 Earth and Related Environmental Sciences > Climate Research
URN:NBN:urn:nbn:se:slu:epsilon-p-116496
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-116496
Additional ID:
Type of IDID
DOI10.1126/sciadv.abj7536
Web of Science (WoS)000760189000013
ID Code:28420
Faculty:NJ - Fakulteten för naturresurser och jordbruksvetenskap
Department:(NL, NJ) > Department of Aquatic Resources
Deposited By: SLUpub Connector
Deposited On:01 Jul 2022 08:39
Metadata Last Modified:01 Jul 2022 08:41

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