Title Impact of anthropogenic transportation to Antarctica on alien seed viability
Author Hughes, K.A.; Lee, J.E.; Ware, C.; Kiefer, K.; Bergstrom, D.M.
Author Affil Hughes, K.A., British Antarctic Survey, Cambridge, United Kingdom. Other: Stellenbosch University, South Africa; Australian Antarctic Division, Australia; University of Tasmania, Australia
Source Polar Biology, 33(8), p.1125-1130. Publisher: Springer-Verlag, Berlin, Germany. ISSN: 0722-4060
Publication Date Aug. 2010
Notes In English. 38 refs. GeoRef Acc. No: 309113
Index Terms Antarctica--King George Island; Antarctica; biogeography; conservation; ecology; human activity; King George Island; Scotia Sea Islands; seeds; South Shetland Islands; tourism
Abstract Antarctic ecosystems are at risk from the introduction of invasive species. The first step in the process of invasion is the transportation of alien species to Antarctic in a viable state. However, the effect of long-distance human-mediated dispersal, over different timescales, on propagule viability is not well known. We assessed the viability of Poa trivialis seeds transported to Antarctica from the UK, South Africa and Australia by ship or by ship and aircraft. Following transportation to the Antarctic Treaty area, no reduction in seed viability was found, despite journey times lasting up to 284 days and seeds experiencing temperatures as low as -1.5C. This work confirms that human-mediated transport may overcome the dispersal barrier for some propagules, and highlights the need for effective pre-departure biosecurity measures.
URL http://hdl.handle.net/10.1007/s00300-010-0801-4
Publication Type journal article
Record ID 91198