Review of weed transfer risk associated with mudfish sampling and mitigation strategies
Published:
June 2010
This report reviews the risk of incidental transfer of freshwater pest plants through DOC's activities related to the survey and monitoring of New Zealand mudfish populations.
Summary
During annual programmes to survey and monitor populations of New Zealand mudfish (Neochanna spp.) DOC staff access numerous wetland locations to deploy and retrieve fish sampling equipment. One concern related to these activities is the risk of incidental transfer of freshwater pest plants.
This report considers described mudfish locations and sampled habitats to shortlist the most probable pest plant species of concern. Pest plant propagules are briefly described and current mudfish sampling equipment and practices are reviewed to identify whether pest plant transfer is a valid concern. A range of decontamination treatments are considered according to likely success in reducing risk, their sustainability and practicality. The report includes recommendations for future practices aimed at practical steps that could be taken to remove or mitigate risk of propagule transference.
Content of the report includes:
- Introduction
- Pest plants of concern
- Risk of pest plant transfer
- Environmental risk
- Review of potential decontamination treatments
- Recommendations
- Acknowledgements
- Glossary
- References
- Appendix
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Publication information
M. de Winton, K. Bodmin, P. Champion
National Institute of Water & Atmospheric Research LTD
Prepared for the Department of Conservation
NIWA Client Report: HAM2010-068, June 2010
NIWA Project: DOC10204
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