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Antarctic krill under sea ice: elevated abundance in a narrow band just south of ice edge

Antarctic krill under sea ice: elevated abundance in a narrow band just south of ice edge
Antarctic krill under sea ice: elevated abundance in a narrow band just south of ice edge
We surveyed Antarctic krill (Euphausia superba) under sea ice using the autonomous underwater vehicle Autosub-2. Krill were concentrated within a band under ice between 1 and 13 kilometers south of the ice edge. Within this band, krill densities were fivefold greater than that of open water. The under-ice environment has long been considered an important habitat for krill, but sampling difficulties have previously prevented direct observations under ice over the scale necessary for robust krill density estimation. Autosub-2 enabled us to make continuous high-resolution measurements of krill density under ice reaching 27 kilometers beyond the ice edge.
0036-8075
1890-1892
Brierley, A.S.
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Fernandes, P.G.
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Brandon, M.A.
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Armstrong, F.
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Millard, N.W.
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McPhail, S.D.
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Steven, D.
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Stevenson, P.
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Pebody, M.
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Perrett, J.
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Squires, M.
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Bone, D.
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Griffiths, G.
2887c3c7-95f2-4834-b3f6-0284344d3580
Brierley, A.S.
845cbcc3-15ce-42b1-aed5-ff5c4a760f19
Fernandes, P.G.
d4dade97-823a-4729-88b8-b8eab8970561
Brandon, M.A.
ebede00e-6706-4880-9ecc-3364b9da6a5b
Armstrong, F.
82f7acc4-dccd-4381-9685-e6fbdbf2e96c
Millard, N.W.
49580a7b-9346-484e-80f9-c6ef62e73b65
McPhail, S.D.
58ac4bcd-26a6-4845-8e81-6d6a8f18aed7
Steven, D.
5977b109-989a-4c89-9f9b-f2d8c91f3425
Stevenson, P.
5e0b96d1-1429-4010-a493-ea23a849f46d
Pebody, M.
061eafd0-c200-4701-b465-274140a4602b
Perrett, J.
6392a5df-7574-4780-bb36-e5d4d3fd1d11
Squires, M.
77858f23-632b-4e95-b392-88a14e3309bd
Bone, D.
ca642fe5-8349-4dd9-81b7-89c5966541c4
Griffiths, G.
2887c3c7-95f2-4834-b3f6-0284344d3580

Brierley, A.S., Fernandes, P.G., Brandon, M.A., Armstrong, F., Millard, N.W., McPhail, S.D., Steven, D., Stevenson, P., Pebody, M., Perrett, J., Squires, M., Bone, D. and Griffiths, G. (2002) Antarctic krill under sea ice: elevated abundance in a narrow band just south of ice edge. Science, 295 (5561), 1890-1892. (doi:10.1126/science.1068574).

Record type: Article

Abstract

We surveyed Antarctic krill (Euphausia superba) under sea ice using the autonomous underwater vehicle Autosub-2. Krill were concentrated within a band under ice between 1 and 13 kilometers south of the ice edge. Within this band, krill densities were fivefold greater than that of open water. The under-ice environment has long been considered an important habitat for krill, but sampling difficulties have previously prevented direct observations under ice over the scale necessary for robust krill density estimation. Autosub-2 enabled us to make continuous high-resolution measurements of krill density under ice reaching 27 kilometers beyond the ice edge.

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Published date: 2002

Identifiers

Local EPrints ID: 5970
URI: http://eprints.soton.ac.uk/id/eprint/5970
ISSN: 0036-8075
PURE UUID: ed64eedc-c11a-4588-b6de-664f9078a394

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Date deposited: 07 Jun 2004
Last modified: 15 Jul 2019 19:38

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Contributors

Author: A.S. Brierley
Author: P.G. Fernandes
Author: M.A. Brandon
Author: F. Armstrong
Author: N.W. Millard
Author: S.D. McPhail
Author: D. Steven
Author: P. Stevenson
Author: M. Pebody
Author: J. Perrett
Author: M. Squires
Author: D. Bone
Author: G. Griffiths

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