Assessing the invasive risk of two non-native Agrostis species on sub-Antarctic Macquarie Island
Two small swards of two grass species ( Agrostis stolonifera and Agrostis capillaris ) previously unrecorded on Macquarie Island (5430′S, 15856′E) were found during the 20132014 austral summer. Their discovery leads to an assessment of their introduction status and invasive risk. Several evaluations...
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ftunivtasecite:oai:ecite.utas.edu.au:113395 2023-05-15T13:49:03+02:00 Assessing the invasive risk of two non-native Agrostis species on sub-Antarctic Macquarie Island Pertierra, LR Baker, M Howard, C Vega, GC Olalla-Tarraga, MA Scott, J 2016 https://doi.org/10.1007/s00300-016-1912-3 http://ecite.utas.edu.au/113395 en eng Springer-Verlag http://dx.doi.org/10.1007/s00300-016-1912-3 Pertierra, LR and Baker, M and Howard, C and Vega, GC and Olalla-Tarraga, MA and Scott, J, Assessing the invasive risk of two non-native Agrostis species on sub-Antarctic Macquarie Island, Polar Biology, 39, (12) pp. 2361-2371. ISSN 0722-4060 (2016) [Refereed Article] http://ecite.utas.edu.au/113395 Environmental Sciences Environmental Science and Management Environmental Management Refereed Article PeerReviewed 2016 ftunivtasecite https://doi.org/10.1007/s00300-016-1912-3 2019-12-13T22:13:26Z Two small swards of two grass species ( Agrostis stolonifera and Agrostis capillaris ) previously unrecorded on Macquarie Island (5430′S, 15856′E) were found during the 20132014 austral summer. Their discovery leads to an assessment of their introduction status and invasive risk. Several evaluations were conducted on the plants regarding their extent, taxonomy, reproductive status and invasive potential. It is possible that the two species were accidentally introduced by human activities due to their proximity to human-frequented sites. No further occurrences were found, indicating that although the species were established, they were, respectively, restricted to two small swards of less than 1m 2 each. Observations of floral development in the field at the end of summer suggested that no sexually reproductive material was produced. Indoor cultivation of sampled specimens at the island station showed a faster development with mature flowers at the end of the summer but still no seeds. The bioclimatic niches of the two species were modeled with MaxEnt software. Biomodeling results indicate that reasonably favorable habitat is available on Macquarie Island for the successful colonization of both species. Agrostis stolonifera showed a higher invasion risk than A. capillaris . Our observations indicate that the two species are strong candidates for invading the island despite having phenological constraints. As a result, the two swards were removed by the islands management authority. Further introductions and establishment of non-native plant species are expected to occur on sub-Antarctic islands under current global change scenarios. Article in Journal/Newspaper Antarc* Antarctic Macquarie Island Polar Biology eCite UTAS (University of Tasmania) Antarctic Austral Polar Biology 39 12 2361 2371 |
institution |
Open Polar |
collection |
eCite UTAS (University of Tasmania) |
op_collection_id |
ftunivtasecite |
language |
English |
topic |
Environmental Sciences Environmental Science and Management Environmental Management |
spellingShingle |
Environmental Sciences Environmental Science and Management Environmental Management Pertierra, LR Baker, M Howard, C Vega, GC Olalla-Tarraga, MA Scott, J Assessing the invasive risk of two non-native Agrostis species on sub-Antarctic Macquarie Island |
topic_facet |
Environmental Sciences Environmental Science and Management Environmental Management |
description |
Two small swards of two grass species ( Agrostis stolonifera and Agrostis capillaris ) previously unrecorded on Macquarie Island (5430′S, 15856′E) were found during the 20132014 austral summer. Their discovery leads to an assessment of their introduction status and invasive risk. Several evaluations were conducted on the plants regarding their extent, taxonomy, reproductive status and invasive potential. It is possible that the two species were accidentally introduced by human activities due to their proximity to human-frequented sites. No further occurrences were found, indicating that although the species were established, they were, respectively, restricted to two small swards of less than 1m 2 each. Observations of floral development in the field at the end of summer suggested that no sexually reproductive material was produced. Indoor cultivation of sampled specimens at the island station showed a faster development with mature flowers at the end of the summer but still no seeds. The bioclimatic niches of the two species were modeled with MaxEnt software. Biomodeling results indicate that reasonably favorable habitat is available on Macquarie Island for the successful colonization of both species. Agrostis stolonifera showed a higher invasion risk than A. capillaris . Our observations indicate that the two species are strong candidates for invading the island despite having phenological constraints. As a result, the two swards were removed by the islands management authority. Further introductions and establishment of non-native plant species are expected to occur on sub-Antarctic islands under current global change scenarios. |
format |
Article in Journal/Newspaper |
author |
Pertierra, LR Baker, M Howard, C Vega, GC Olalla-Tarraga, MA Scott, J |
author_facet |
Pertierra, LR Baker, M Howard, C Vega, GC Olalla-Tarraga, MA Scott, J |
author_sort |
Pertierra, LR |
title |
Assessing the invasive risk of two non-native Agrostis species on sub-Antarctic Macquarie Island |
title_short |
Assessing the invasive risk of two non-native Agrostis species on sub-Antarctic Macquarie Island |
title_full |
Assessing the invasive risk of two non-native Agrostis species on sub-Antarctic Macquarie Island |
title_fullStr |
Assessing the invasive risk of two non-native Agrostis species on sub-Antarctic Macquarie Island |
title_full_unstemmed |
Assessing the invasive risk of two non-native Agrostis species on sub-Antarctic Macquarie Island |
title_sort |
assessing the invasive risk of two non-native agrostis species on sub-antarctic macquarie island |
publisher |
Springer-Verlag |
publishDate |
2016 |
url |
https://doi.org/10.1007/s00300-016-1912-3 http://ecite.utas.edu.au/113395 |
geographic |
Antarctic Austral |
geographic_facet |
Antarctic Austral |
genre |
Antarc* Antarctic Macquarie Island Polar Biology |
genre_facet |
Antarc* Antarctic Macquarie Island Polar Biology |
op_relation |
http://dx.doi.org/10.1007/s00300-016-1912-3 Pertierra, LR and Baker, M and Howard, C and Vega, GC and Olalla-Tarraga, MA and Scott, J, Assessing the invasive risk of two non-native Agrostis species on sub-Antarctic Macquarie Island, Polar Biology, 39, (12) pp. 2361-2371. ISSN 0722-4060 (2016) [Refereed Article] http://ecite.utas.edu.au/113395 |
op_doi |
https://doi.org/10.1007/s00300-016-1912-3 |
container_title |
Polar Biology |
container_volume |
39 |
container_issue |
12 |
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2361 |
op_container_end_page |
2371 |
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1766250681912524800 |