Historic records for Grytviken and KEP. (Floyd, K. (2013) Weeds on South Georgia. Government of South Georgia and the South Sandwich Islands.); Not recorded this season. (Government of South Georgia and the South Sandwich Islands (2015) Alien plants on South Georgia: Season Report 2014-2015. Government of South Georgia and the South Sandwich Islands.); Transient. Likely eradicated. Was among bittercress sites at King Edward Point but not seen for many years. (Floyd, K. (2018) Non-native plants on South Georgia: Season Report 2017/18. Indigena Biosecurity International, Government of South Georgia and the South Sandwich Islands);
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Terrestrial. Native of Europe. (Sindel, B.M., Kristiansen, P.E., Wilson, S.C., Shaw, J.D. & Williams, L.K. (2017). Managing invasive plants on sub-Antarctic Macquarie Island, The Rangeland Journal, 39, pp. 537€“549. Available at: https://doi.org/10.1071/RJ17073);
Initially been introduced as contaminants at a time when the islands seal and penguin colonies were exploited for pelts and oil (Selkirk et al. 1990; le Roux et al. 2013). On Marion Island, S. media is often associated with colonies of burrowing seabirds, surface nesting birds, and marine mammals. In addition to the assumed capacity of these animals to spread S. media, the soil disturbance and nutrient enrichment in nesting areas probably facilitates weed establishment (Shaw 2013). (Sindel, B.M., Kristiansen, P.E., Wilson, S.C., Shaw, J.D. & Williams, L.K. (2017). Managing invasive plants on sub-Antarctic Macquarie Island, The Rangeland Journal, 39, pp. 537€“549. Available at: https://doi.org/10.1071/RJ17073);
James, R., Floyd, K., Pagad, S. & Wong, L.J. (2020) Global Register of Introduced and Invasive Species of South Georgia and the South Sandwich Islands. Version 1.4. Invasive Species Specialist Group ISSG. Checklist dataset; Floyd, K. (2013) Weeds on South Georgia. Government of South Georgia and the South Sandwich Islands.; Sindel, B.M., Kristiansen, P.E., Wilson, S.C., Shaw, J.D. & Williams, L.K. (2017). Managing invasive plants on sub-Antarctic Macquarie Island, The Rangeland Journal, 39, pp. 537€“549. Available at: https://doi.org/10.1071/RJ17073;Government of South Georgia & the South Sandwich Islands (2016) South Georgia Non-Native Plant Management Strategy 2016-2020. Government House, Stanley, Falkland Islands.; Floyd, K. (2018) Non-native plants on South Georgia: Season Report 2017/18. Indigena Biosecurity International, Government of South Georgia and the South Sandwich Islands;