Breaching the dispersal barrier to invasion: quantification and management

摘要: Globalization has resulted in unprecedented movements of people, goods, and alien species across the planet. Although impacts biological invasions are widely appreciated, a bias exists research effort to post-dispersal processes because difficulties measuring propagule pressure. The Antarctic provides an ideal model system which investigate region's isolation small number entry routes. Here we investigated logistics operations South African National Programme (SANAP) quantified initial dispersal into region. We found that over 1400 seeds from 99 taxa transported each field season association with SANAP passenger luggage cargo. first ever assessment drop-off indicated 30–50% these propagules will enter recipient environment. Many include cosmopolitan weeds known aliens Antarctic, indicating oper...