Seasonal changes in the population dynamics of Aurelia aurita in Thau lagoon

Bonnet, Delphine, Molinero, Juan Carlos, Schohn, Thomas and Daly Yahia, Mohamed Nejib (2012) Seasonal changes in the population dynamics of Aurelia aurita in Thau lagoon Cahiers de Biologie Marine, 53 . pp. 343-347.

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Abstract

Seasonal dynamics of the scyphomedusae, Aurelia aurita, was investigated twice a month from January 2010 to June 2011 and related to environmental conditions in Thau lagoon, southwestern Mediterranean Sea. Strobilation, indicated by the presence of 1 mm ephyrae, occurred from November to the middle of April. Maximum abundances up to 330 ind.100 m-3 were reached in May 2011, few weeks after the last ephyrae release. The population declines afterwards steadily until disappearing from the water column. Concurrent with increased water temperature and mesozooplankton predation during May, growth rates increased from 0.04 mm.day-1 to a peak of 4.5 mm.day-1, with a maximum bell diameter of 11.3 cm reached on the 7th May. During the study period, there was no advection of A. aurita between Thau lagoon and the coastal waters.

Document Type: Article
Keywords: mediterranean sea; aurelia aurita; lagoon
Research affiliation: OceanRep > GEOMAR > FB3 Marine Ecology > FB3-EOE-N Experimental Ecology - Food Webs
OceanRep > The Future Ocean - Cluster of Excellence
Refereed: Yes
ISSN: 0007-9723
Projects: Future Ocean
Date Deposited: 30 Aug 2012 11:38
Last Modified: 07 Sep 2016 09:16
URI: http://eprints.uni-kiel.de/id/eprint/15107

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