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Submersible observations on the daytime vertical distribution of Aequorea ?forskalea off the west coast of southern Africa
Sparks, A.; Brierley, A.S.; Buecher, E.; Boyer, D.; Axelsen, B.; Gibbons, M.J. (2005). Submersible observations on the daytime vertical distribution of Aequorea ?forskalea off the west coast of southern Africa. J. Mar. Biol. Ass. U.K. 85(3): 519-522
In: Journal of the Marine Biological Association of the United Kingdom. Cambridge University Press/Marine Biological Association of the United Kingdom: Cambridge. ISSN 0025-3154, more
Peer reviewed article  

Available in Authors 

Keywords
    Vertical distribution; Aequorea forskalea Péron & Lesueur, 1810 [WoRMS]; Hydroidolina [WoRMS]; Africa, South [Marine Regions]; Marine

Authors  Top 
  • Sparks, A.
  • Brierley, A.S.
  • Buecher, E.
  • Boyer, D.
  • Axelsen, B.
  • Gibbons, M.J.

Abstract
    The vertical distribution of the hydromedusa Aequorea?forskalea was investigated using observations from the research submersible ‘Jago’ collected during 36 dives off the west coast of southern Africa during November 1997 and April 1999. The mean population depth of Aequorea?forskalea deepened with increasing sea surface temperature. We suggest that this behaviour enables individuals to avoid offshore advection, to minimize spatial overlap with other large medusae and to maintain their position over the middle of the shelf.

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