Increasing impacts by Antarctica’s most widespread invasive plant species as result of direct competition with native vascular plants
Biological invasions represent significant economic and conservation challenges, though it is widely acknowledged that their impacts are often poorly documented and difficult to predict. In the Antarctic, one non-native vascular plant species is widespread and studies have shown negative impacts on...
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Online Access: | https://doi.org/10.3897/neobiota.51.37250 https://neobiota.pensoft.net/article/37250/ |
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ftpensoft:10.3897/neobiota.51.37250 2023-05-15T14:05:14+02:00 Increasing impacts by Antarctica’s most widespread invasive plant species as result of direct competition with native vascular plants Molina-Montenegro,Marco Bergstrom,Dana Chwedorzewska,Katarzyna Convey,Peter Chown,Steven 2019 text/html https://doi.org/10.3897/neobiota.51.37250 https://neobiota.pensoft.net/article/37250/ en eng Pensoft Publishers info:eu-repo/semantics/altIdentifier/eissn/1314-2488 info:eu-repo/semantics/altIdentifier/pissn/1619-0033 info:eu-repo/semantics/openAccess NeoBiota 51: 19-40 Invasions Poa annua Climate change Competition Antarctic ecosystems Research Article 2019 ftpensoft https://doi.org/10.3897/neobiota.51.37250 2022-03-01T12:41:28Z Biological invasions represent significant economic and conservation challenges, though it is widely acknowledged that their impacts are often poorly documented and difficult to predict. In the Antarctic, one non-native vascular plant species is widespread and studies have shown negative impacts on native flora. Using field “common garden” experiments, we evaluate the competitive impact of the increasingly widespread invasive grass Poa annua on the only two native vascular species of Antarctica, the forb Colobanthus quitensis and the grass Deschampsia antarctica. We focus on interactions between these three plant species under current and a future, wetter, climate scenario, in terms of density of individuals. Our analysis demonstrates Poa annua has the potential to have negative impacts on the survival and growth of the native Antarctic vascular species. Under predicted future wetter conditions, C. quitensis communities will become more resistant to invasion, while those dominated by D. antarctica will become less resistant. Under a recently developed unified scheme for non-native species impacts, P. annua can be considered a species that can cause potentially moderate to major impacts in Antarctica. If current patterns of increased human pressure and regional climate change persist and mitigation action is not taken (i.e. reduction of propagule pressure and eradication or control measures), P. annua is likely to spread in Antarctica, especially in the Antarctic Peninsula region, with significant negative consequences for some of the most remote and pristine ecosystems worldwide. Tighter biosecurity across all operators in the region, improved surveillance for the species, and prompt, effective control actions will reduce these risks. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica Pensoft Publishers Antarctic Antarctic Peninsula The Antarctic NeoBiota 51 19 40 |
institution |
Open Polar |
collection |
Pensoft Publishers |
op_collection_id |
ftpensoft |
language |
English |
topic |
Invasions Poa annua Climate change Competition Antarctic ecosystems |
spellingShingle |
Invasions Poa annua Climate change Competition Antarctic ecosystems Molina-Montenegro,Marco Bergstrom,Dana Chwedorzewska,Katarzyna Convey,Peter Chown,Steven Increasing impacts by Antarctica’s most widespread invasive plant species as result of direct competition with native vascular plants |
topic_facet |
Invasions Poa annua Climate change Competition Antarctic ecosystems |
description |
Biological invasions represent significant economic and conservation challenges, though it is widely acknowledged that their impacts are often poorly documented and difficult to predict. In the Antarctic, one non-native vascular plant species is widespread and studies have shown negative impacts on native flora. Using field “common garden” experiments, we evaluate the competitive impact of the increasingly widespread invasive grass Poa annua on the only two native vascular species of Antarctica, the forb Colobanthus quitensis and the grass Deschampsia antarctica. We focus on interactions between these three plant species under current and a future, wetter, climate scenario, in terms of density of individuals. Our analysis demonstrates Poa annua has the potential to have negative impacts on the survival and growth of the native Antarctic vascular species. Under predicted future wetter conditions, C. quitensis communities will become more resistant to invasion, while those dominated by D. antarctica will become less resistant. Under a recently developed unified scheme for non-native species impacts, P. annua can be considered a species that can cause potentially moderate to major impacts in Antarctica. If current patterns of increased human pressure and regional climate change persist and mitigation action is not taken (i.e. reduction of propagule pressure and eradication or control measures), P. annua is likely to spread in Antarctica, especially in the Antarctic Peninsula region, with significant negative consequences for some of the most remote and pristine ecosystems worldwide. Tighter biosecurity across all operators in the region, improved surveillance for the species, and prompt, effective control actions will reduce these risks. |
format |
Article in Journal/Newspaper |
author |
Molina-Montenegro,Marco Bergstrom,Dana Chwedorzewska,Katarzyna Convey,Peter Chown,Steven |
author_facet |
Molina-Montenegro,Marco Bergstrom,Dana Chwedorzewska,Katarzyna Convey,Peter Chown,Steven |
author_sort |
Molina-Montenegro,Marco |
title |
Increasing impacts by Antarctica’s most widespread invasive plant species as result of direct competition with native vascular plants |
title_short |
Increasing impacts by Antarctica’s most widespread invasive plant species as result of direct competition with native vascular plants |
title_full |
Increasing impacts by Antarctica’s most widespread invasive plant species as result of direct competition with native vascular plants |
title_fullStr |
Increasing impacts by Antarctica’s most widespread invasive plant species as result of direct competition with native vascular plants |
title_full_unstemmed |
Increasing impacts by Antarctica’s most widespread invasive plant species as result of direct competition with native vascular plants |
title_sort |
increasing impacts by antarctica’s most widespread invasive plant species as result of direct competition with native vascular plants |
publisher |
Pensoft Publishers |
publishDate |
2019 |
url |
https://doi.org/10.3897/neobiota.51.37250 https://neobiota.pensoft.net/article/37250/ |
geographic |
Antarctic Antarctic Peninsula The Antarctic |
geographic_facet |
Antarctic Antarctic Peninsula The Antarctic |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica |
op_source |
NeoBiota 51: 19-40 |
op_relation |
info:eu-repo/semantics/altIdentifier/eissn/1314-2488 info:eu-repo/semantics/altIdentifier/pissn/1619-0033 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.3897/neobiota.51.37250 |
container_title |
NeoBiota |
container_volume |
51 |
container_start_page |
19 |
op_container_end_page |
40 |
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1766276973036830720 |