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Fine scale 3 dimensional dive behaviour of Antarctic fur seals along the Kerguelen Plateau

Fine scale 3 dimensional dive behaviour of Antarctic fur seals along the Kerguelen Plateau
Nicole Hellessey

Authors

Nicole Hellessey
Institute for Marine and Antarctic Studies (IMAS), Cnr Grosvenor and Alexander Streets, Hobart

Dr Mary-Anne Lea
Institute for Marine and Antarctic Studies (IMAS), Cnr Grosvenor and Alexander Streets, Hobart

Abstract

Antarctic fur seals (Arctocephalus gazella) are one of the more well studied circumpolar marine predators. In the Kerguelen Plateau region in particular, much is known regarding their diet preferences for myctophids and squid, variability in foraging regions and diving behaviour and even route tactics associated with the Polar Front. Little, however, is currently known concerning the three dimensional habitat use of female Antarctic fur seals in relation to oceanographic features such as thermoclines. Knowledge of how predators (and their prey) respond at fine-scales to variability in the water column is important for understanding temporal shifts in predator-prey dynamics. This study assesses the validity of using water column temperature data measured by Mk7 time depth recorders deployed on female Antarctic fur seals in 1999 and 2000 at Cap Noir, Iles Kerguelen. A total of 66 foraging trips were recorded over the two austral summers. Preliminary results suggest that females may dive within distinct temperature bands that vary between years.

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Key dates

  • 11th June 2013
    Registrations close
  • 21st June 2013
    Registrations at the AAD open for staff
  • 24th June 2013
    Registrations at the venue open
  • 24th June 2013
    Conference commences
  • 26th June 2013
    Conference concludes

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This page was last modified on 24 September 2013.