A long-term experimental case study of the ecological effectiveness and cost effectiveness of invasive plant management in achieving conservation goals: Bitou Bush control in Booderee National Park in Eastern Australia

Lindenmayer, David B., Wood, Jeff, Macgregor, Christopher, Buckley, Yvonne M., Dexter, Nicholas, Fortescue, Martin, Hobbs, Richard J. and Catford, Jane A. (2015) A long-term experimental case study of the ecological effectiveness and cost effectiveness of invasive plant management in achieving conservation goals: Bitou Bush control in Booderee National Park in Eastern Australia. PLoS ONE, 10 6: . doi:10.1371/journal.pone.0128482


Author Lindenmayer, David B.
Wood, Jeff
Macgregor, Christopher
Buckley, Yvonne M.
Dexter, Nicholas
Fortescue, Martin
Hobbs, Richard J.
Catford, Jane A.
Title A long-term experimental case study of the ecological effectiveness and cost effectiveness of invasive plant management in achieving conservation goals: Bitou Bush control in Booderee National Park in Eastern Australia
Journal name PLoS ONE   Check publisher's open access policy
ISSN 1932-6203
Publication date 2015-06-03
Sub-type Article (original research)
DOI 10.1371/journal.pone.0128482
Open Access Status DOI
Volume 10
Issue 6
Total pages 1
Place of publication San Francisco, United States
Publisher Public Library of Science
Collection year 2016
Language eng
Formatted abstract
Invasive plant management is often justified in terms of conservation goals, yet progress is rarely assessed against these broader goals, instead focussing on short-term reductions of the invader as a measure of success. Key questions commonly remain unanswered including whether invader removal reverses invader impacts and whether management itself has negative ecosystem impacts. We addressed these knowledge gaps using a seven year experimental investigation of Bitou Bush, Chrysanthemoides monilifera subsp. rotundata. Our case study took advantage of the realities of applied management interventions for Bitou Bush to assess whether it is a driver or passenger of environmental change, and quantified conservation benefits relative to management costs of different treatment regimes. Among treatments examined, spraying with herbicide followed by burning and subsequent re-spraying (spray-fire-spray) proved the most effective for reducing the number of individuals and cover of Bitou Bush. Other treatment regimes (e.g. fire followed by spraying, or two fires in succession) were less effective or even exacerbated Bitou Bush invasion. The spray-fire-spray regime did not increase susceptibility of treated areas to re-invasion by Bitou Bush or other exotic species. This regime significantly reduced plant species richness and cover, but these effects were short-lived. The spray-fire-spray regime was the most cost-effective approach to controlling a highly invasive species and facilitating restoration of native plant species richness to levels characteristic of uninvaded sites. We provide a decision tree to guide management, where recommended actions depend on the outcome of post-treatment monitoring and performance against objectives. Critical to success is avoiding partial treatments and treatment sequences that may exacerbate invasive species impacts. We also show the value of taking advantage of unplanned events, such as wildfires, to achieve management objectives at reduced cost
Keyword Invasive plant management
Bitou bush
Conservation
Cost effective
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Article # e0128482.

Document type: Journal Article
Sub-type: Article (original research)
Collections: CEED Publications
Official 2016 Collection
School of Biological Sciences Publications
 
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