Migration and Fisheries of North East Atlantic Mackerel (Scomber scombrus) in Autumn and Winter

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Author(s) Jansen, Teunis, Campbell, Andrew, Kelly, Ciarán, Hátún, Hjálmar, Payne, Mark R.
Publication Type Journal Items, Publication Status: Published
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Title Migration and Fisheries of North East Atlantic Mackerel (Scomber scombrus) in Autumn and Winter
Author(s) Jansen, Teunis
Campbell, Andrew
Kelly, Ciarán
Hátún, Hjálmar
Payne, Mark R.
Description 9 p.
Journal or Series Title Plos One
Volume Number 7
Issue Number 12
Start Page e51541
ISSN 1932-6203
Publisher Public Library of Science
Publication Place Lawrence, Kan.
Publication Date 2012
Abstract It has been suggested that observed spatial variation in mackerel fisheries, extending over several hundreds of kilometers, is reflective of climate-driven changes in mackerel migration patterns. Previous studies have been unable to clearly demonstrate this link. In this paper we demonstrate correlation between temperature and mackerel migration/distribution as proxied by mackerel catch data from both scientific bottom trawl surveys and commercial fisheries. We show that mackerel aggregate and migrate distances of up to 500 km along the continental shelf edge from mid-November to early March. The path of this migration coincides with the location of the relatively warm shelf edge current and, as a consequence of this affinity, mackerel are guided towards the main spawning area in the south. Using a simulated time series of temperature of the shelf edge current we show that variations in the timing of the migration are significantly correlated to temperature fluctuations within the current. The proposed proxies for mackerel distribution were found to be significantly correlated. However, the correlations were weak and only significant during periods without substantial legislative or technical developments. Substantial caution should therefore be exercised when using such data as proxies for mackerel distribution. Our results include a new temperature record for the shelf edge current obtained by embedding the available hydrographic observations within a statistical model needed to understand the migration through large parts of the life of adult mackerel and for the management of this major international fishery.
DOI 10.1371/journal.pone.0051541
Additional Notes Published online 10 December 2012
Document Type Article
Publication Status Published
Language English
Assigned Organisational Unit(s) 03731
Organisational Unit(s)
NEBIS System Number 006206116
Source Database ID WOS-000312201900100
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@article{Jnsn2012,
  author = "Jansen, Teunis and Campbell, Andrew and Kelly, Ciar{\'{a}}n and H{\'{a}}t{\'{u}}n, Hj{\'{a}}lmar and Payne, Mark R.",
  title = "{M}igration and {F}isheries of {N}orth {E}ast {A}tlantic {M}ackerel ({S}comber scombrus) in {A}utumn and {W}inter",
  journal = "Plos One",
  year = 2012,
  volume = "7",
  number = "12",
  pages = "e51541--",
}


E-Citations record created: Mon, 14 Jan 2013, 07:26:16 CET