Evaluating Outcomes: Regional Investment in Weeds Management in the Savannas

Bellamy, Jenny, Metcalfe, Dan and Weston, Nigel (2006). Evaluating Outcomes: Regional Investment in Weeds Management in the Savannas. In Geoff McDonald, Suzanne Hoverman, Sonja Heyenga and Bruce Taylor (Ed.), Case Studies in Regional Natural Resource Management in Northern Australia: Milestone Report 5 (pp. 80-91) Darwin, NT, Australia: Tropical Savannas Management CRC.

Author Bellamy, Jenny
Metcalfe, Dan
Weston, Nigel
Title of chapter Evaluating Outcomes: Regional Investment in Weeds Management in the Savannas
Title of book Case Studies in Regional Natural Resource Management in Northern Australia: Milestone Report 5
Place of Publication Darwin, NT, Australia
Publisher Tropical Savannas Management CRC
Publication Year 2006
Sub-type Other
Year available 2006
Series Milestone Report Series
Editor Geoff McDonald
Suzanne Hoverman
Sonja Heyenga
Bruce Taylor
Chapter number 8
Start page 80
End page 91
Total pages 12
Total chapters 9
Language eng
Subjects 160507 Environment Policy
0501 Ecological Applications
Formatted Abstract/Summary
Invasive plant species (weeds) are recognised as one of the most serious threats to northern
Australia’s primary production, biodiversity conservation and cultural values. Weeds are
plants that have entered Australia or a region from elsewhere and which now have detrimental
effects on economic, social and environmental values in a wide range of situations and
ecosystems (ARMCANZ et al. 1999). They have the potential to reduce farm and forest
productivity and profitability, alter ecosystem function and displace native species and
significantly threaten the long term sustainability of all agricultural and natural resources,
including the loss of biodiversity (e.g. Australian Biosecurity Group 2005; Groves et al. 2005;
Sinden 2004). Weed management therefore is an essential and integral part of sustainable
resource use and management. Moreover new weed related problems are continually
emerging that require an adaptive response.
Preventing or controlling the introduction and spread of weeds and other biological threats to
biodiversity is one of the areas of activity that define the scope of the Australian
Government’s (AG) Natural Heritage Trust (NHT) investment. Substantial public and private
investments are being made through this framework to protect and improve the natural
resource base and valued assets from a range of threats including weeds. The likely outcomes
of this investment and its effectiveness in achieving change in the threats posed are yet to be
assessed. Moreover, there are particular challenges in assessing weeds outcomes in the
northern Australian context of long timeframes for responses, large regional size, high
regional variability, low population base and multi-dimensionality of impact.
This case study focuses specifically on the tropical savanna areas and draws on recent
research underpinning a national evaluation of the Australian Government’s (AG)
investments through the NHT regional delivery model (i.e. NHT2) (see Bellamy et al. 2005).
This work was undertaken in collaboration with regional natural resource management
(NRM) bodies in four NHT regions in northern Australia (Northern Territory, Northern Gulf,
Desert Channels, and Wet Tropics). Specifically it aims to:
· Develop a practical framework for assessing the likely effectiveness of regional
investment in weeds outcomes that has relevance to a range of other NRM outcomes;
· Contribute to an improved understanding of the issues underpinning the effectiveness
of regional investments in weeds outcomes in northern Australia.
Q-Index Code BX
Additional Notes This book is a report for the Healthy Savanna Planning Systems Project managed by the Cooperative Research Centre for Tropical Savannas Management

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Created: Tue, 09 Jun 2009, 09:31:17 EST by Mary-Anne Marrington on behalf of School of Integrative Systems