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Related Experiment Videos

How isolated is Antarctica?

Andrew Clarke1, David K A Barnes, Dominic A Hodgson

  • 1Biological Sciences, British Antarctic Survey, NERC, High Cross, Madingley Road, Cambridge, UK, CB3 0ET. accl@bas.ac.uk

Trends in Ecology & Evolution
|May 17, 2006
PubMed
Summary
This summary is machine-generated.

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Antarctica may not be isolated. New discoveries challenge the view of the Southern Ocean as a closed system, suggesting potential faunal exchange with other regions.

Area of Science:

  • Marine Biology
  • Oceanography
  • Biogeography

Background:

  • The Southern Ocean and Antarctic Peninsula were traditionally considered isolated systems.
  • Biogeographical similarities exist between Antarctic Peninsula and Magellan region benthic fauna.

Purpose of the Study:

  • To challenge the traditional view of Antarctic isolation.
  • To investigate potential low-level faunal exchange in the Southern Ocean.

Main Methods:

  • Discovery of adult North Atlantic spider crabs (Hyas areneus) at the Antarctic Peninsula.
  • Identification of subpolar marine invertebrate larvae at the Antarctic Peninsula.

Main Results:

  • Findings suggest a previously unrecognized level of faunal exchange.

Related Experiment Videos

  • Challenges the historical explanation for biogeographical similarities between Antarctic and Magellanic fauna.

    • Conclusions:

    • The Antarctic Peninsula may not be as isolated as previously thought.
    • Faunal exchange could be influenced by climate change and human impact.