Abstract


OFFSHORE MARINE CONSTRUCTIONS AS STEPPING-STONES FACILITATING DISPERSAL OF MOON JELLYFISH POLYPS

The large number of offshore platforms introduced into the Adriatic Sea during the last decades is likely to have an impact on the jellyfish population in the area. The jellyfish life cycle is complex and alternates between the pelagic free-swimming medusa and an attached polyp. The polyps of moon jellyfish favour man-made structures as a substrate for attachment, therefore habitat modification through the building of offshore platforms may have a profound influence on the Adriatic population. The newly set up substrates enable the formation of a new population based in the formerly unpopulated open waters of the Adriatic and facilitate dispersal of shore-based populations to distant locations unavailable to them without the use of these stepping-stones for polyp attachment. Here we present preliminary results of particle tracking simulations representing the dispersal of the offspring from the population originating in the port of Koper (northern Adriatic), where we followed polyp population dynamics for three years. We ran the simulations with and without the available substrates of the offshore marine constructions. The simulations were performed using the ROMS-AGRIF ocean model.

Authors

Vodopivec, M., National Institute of Biology, Slovenia, martin.vodopivec@mbss.org

Malej, A., National Institute of Biology, Slovenia, alenka.malej@mbss.org

Peliz, Á. J., Instituto Dom Luis, University of Lisbon, Portugal, ajpeliz@fc.ul.pt

Details

Oral presentation

Session #:083
Date: 2/27/2015
Time: 17:30
Location: Andalucia 3 (Floor 1)

Presentation is given by student: Yes