Weeds down under: invasion of the sub-Antarctic wilderness of Macquarie Island

Williams, Laura, Kristiansen, Paul, Shaw, Justine, Sindel, Brian and Wilson, Susan C. (2013) Weeds down under: invasion of the sub-Antarctic wilderness of Macquarie Island. Plant Protection Quarterly, 28 3: 71-72.

Author Williams, Laura
Kristiansen, Paul
Shaw, Justine
Sindel, Brian
Wilson, Susan C.
Title Weeds down under: invasion of the sub-Antarctic wilderness of Macquarie Island
Journal name Plant Protection Quarterly   Check publisher's open access policy
ISSN 0815-2195
Publication date 2013-01-01
Sub-type Critical review of research, literature review, critical commentary
Volume 28
Issue 3
Start page 71
End page 72
Total pages 2
Place of publication Meredith, VIC, Australia
Publisher Plant Protection Quarterly
Language eng
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.
Keyword Poa annua
Alien
Weed management
World Heritage
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Critical review of research, literature review, critical commentary
Collection: School of Biological Sciences Publications
 
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Created: Mon, 19 May 2014, 22:46:31 EST by Justine Shaw on behalf of School of Biological Sciences