Exotic Pollen and Long-Distance wind Dispersal at a Sub-Antarctic Island

Abstract
Exotic pollen grains on Marion Island (southern Indian Ocean) make up .+-. 1.2% of the spectra recorded in samples of various surface soils, peat profiles and a moraine matrix. They consist mainly of elements transported over long distances across the circum-Antarctic ocean by the prevailing westerly winds. The majority of forms originate from the southern tip of Africa while other come mainly from the more distant South-American region. There is a regular transport of small particles to Marion Island by wind but wind dispersal has probably not played a major role in the establishment of the present biota on the island.