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Lee, Jennifer E; Chown, Steven L (2009): Plants growing near the cargo packing station, and seed occurrence in cargo and luggage destined for Gough and Marion Island and the Antarctic [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.815462, Supplement to: Lee, JE; Chown, SL (2009): Breaching the dispersal barrier to invasion: quantification and management. Ecological Applications, 19(7), 1944-1959, https://doi.org/10.1890/08-2157.1

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Abstract:
Globalization has resulted in unprecedented movements of people, goods, and alien species across the planet. Although the impacts of biological invasions are widely appreciated, a bias exists in research effort to post-dispersal processes because of the difficulties of measuring propagule pressure. The Antarctic provides an ideal model system in which to investigate propagule movements because of the region's isolation and small number of entry routes. Here we investigated the logistics operations of the South African National Antarctic Programme (SANAP) and quantified the initial dispersal of alien species into the region. we found that over 1400 seeds from 99 taxa are transported into the Antarctic each field season in association with SANAP passenger luggage and cargo. The first ever assessment of propagule drop-off indicated that 30-50% of these propagules will enter the recipient environment. Many of the taxa include cosmopolitan weeds and known aliens in the Antarctic, indicating that logistics operations form part of a globally self-perpetuating cycle moving alien species between areas of human disturbance. in addition, propagules of some taxa native to the Antarctic region were also found, suggesting that human movements may be facilitating intra-regional homogenization. Several relatively simple changes in biosecurity policy that could significantly reduce the threat of introduction of nonnative species are suggested.
Project(s):
International Polar Year (2007-2008) (IPY)
Coverage:
Median Latitude: -33.917900 * Median Longitude: 18.442875 * South-bound Latitude: -33.925000 * West-bound Longitude: 18.419900 * North-bound Latitude: -33.906000 * East-bound Longitude: 18.471600
Date/Time Start: 2006-03-01T00:00:00 * Date/Time End: 2007-06-01T00:00:00
Comment:
Data extracted in the frame of a joint ICSTI/PANGAEA IPY effort, see http://doi.pangaea.de/10.1594/PANGAEA.150150
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
4 datasets

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Datasets listed in this publication series

  1. Lee, JE; Chown, SL (2009): (Table 1) Number of seeds found in cargo sampled in Cape Town and destined for Gough and Marion Island and the Antarctic. https://doi.org/10.1594/PANGAEA.815458
  2. Lee, JE; Chown, SL (2009): (Table 3) Number of seeds found in luggage and on expeditioners destined for Gough and Marion Island and the Antarctic. https://doi.org/10.1594/PANGAEA.815459
  3. Lee, JE; Chown, SL (2009): (Appendix Table C1) Percentage of seeds found in cargo and in luggage destined for Gough and Marion Island and the Antarctic. https://doi.org/10.1594/PANGAEA.815460
  4. Lee, JE; Chown, SL (2009): (Appendix Table E1) Species of vascular plants growing within 500 m of the cargo packing station at Paarden Eiland and the Waterfront. https://doi.org/10.1594/PANGAEA.815461