Please use this identifier to cite or link to this item: https://hdl.handle.net/1959.11/14358
Title: Weeds Down Under: Invasion of the sub-Antarctic wilderness of Macquarie Island
Contributor(s): Williams, Laura Kate (author); Kristiansen, Paul  (author)orcid ; Shaw, Justine  (author); Sindel, Brian M  (author)orcid ; Wilson, Susan C  (author)orcid 
Publication Date: 2013
Handle Link: https://hdl.handle.net/1959.11/14358
Abstract: The sub-Antarctic islands are some of the least inhabited and most protected ecosystems in the world. Due to their isolation and low human visitation they have escaped the worst effects of alien plant invasion. The sub-Antarctic islands are all nature reserves due to their high conservation values, and Australia's Macquarie and Heard Islands are World Heritage Areas. The sub-Antarctic climate is harsh and the vascular flora is relatively species poor, yet they support a number of endemic species. Despite the isolation of these islands, 108 alien plant species have become established since European discovery, posing threats to their biodiversity. 'Poa annua '(L.) has quickly become widespread throughout the sub-Antarctic since its introduction and is present on all the major island groups. It is widespread on Macquarie Island, readily colonising disturbed areas and competes with native vegetation for space. The highly invasive capabilities of the grass are due to its high phenotypic and genotypic variability, wide tolerance of environmental conditions, and high fecundity. We are investigating the ecology and control of 'P. annua' to broaden understanding of invasion biology and to assist in the development of non-native plant management in the sub-Antarctic and Antarctic region. While previous studies have shown 'P. annua' is a successful weed, in this study we will quantify its traits and growth in the sub- Antarctic. This paper provides a background to the study of 'P. annua' in the sub-Antarctic.
Publication Type: Journal Article
Source of Publication: Plant Protection Quarterly, 28(3), p. 71-72
Publisher: Plant Protection Quarterly
Place of Publication: Australia
ISSN: 0815-2195
Field of Research (FOR): 050202 Conservation and Biodiversity
050205 Environmental Management
Socio-Economic Outcome Codes: 960502 Ecosystem Assessment and Management of Antarctic and Sub-Antarctic Environments
960499 Control of Pests, Diseases and Exotic Species not elsewhere classified
Peer Reviewed: Yes
HERDC Category Description: C1 Refereed Article in a Scholarly Journal
Other Links: http://search.informit.com.au/documentSummary;dn=685397770776505;res=IELHSS
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Appears in Collections:Journal Article
School of Environmental and Rural Science

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