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Abundances of Metridia lucens in the western Irish Sea

Published online by Cambridge University Press:  24 May 2004

William Ll. Rowlands ,
Mark Dickey-Collas ,
Audrey J. Geffen  and
Richard D.M. Nash
William Ll. Rowlands
Affiliation:
University of Liverpool, Port Erin Marine Laboratory, Port Erin, Isle of Man, IM9 6JA, British Isles
Mark Dickey-Collas
Affiliation:
Department of Agriculture and Rural Development, Agriculture and Environmental Sciences Division, Newforge Lane, Belfast, BT9 5PX, UK Present address: RIVO, Postbus 68, 1970 AB IJmuiden, The Netherlands
Audrey J. Geffen
Affiliation:
University of Liverpool, Port Erin Marine Laboratory, Port Erin, Isle of Man, IM9 6JA, British Isles Present address: Department of Fisheries and Marine Biology, Postbox 7800, University of Bergen, 5020 Bergen, Norway
Richard D.M. Nash
Affiliation:
University of Liverpool, Port Erin Marine Laboratory, Port Erin, Isle of Man, IM9 6JA, British Isles
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Abstract

Interannual and spatial differences in the abundance of Metridia lucens are reported from the Irish Sea from 1996 to 2001. In most years the abundance in spring is very low (<50 m2), however in 2001 the abundance was high and this enabled a rare study of the vertical distribution of M. lucens in coastal waters. The vertical distribution differs with time of day and water column structure. Abundances were always higher in stratified deeper waters compared with mixed or coastal waters.

Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 84 , Issue 3 , June 2004 , pp. 617 - 618
Copyright
2004 Marine Biological Association of the United Kingdom

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