New Zealand Journal of Marine and Freshwater Research abstracts
Priority management actions for alien freshwater fish species in Australia
John D. Koehn
Arthur Rylah Institute for Environmental Research
Department of Sustainability and Environment
123 Brown Street, Heidelberg
VIC 3084, Australia
email: John.Koehn@dse.vic.gov.au
Rachel F. Mackenzie
Queensland Fisheries Service
GPO Box 46, Brisbane
Q 4001, Australia
email: Rachel.Mackenzie@nrm.qld.gov.au
Abstract In Australia, alien freshwater fish are continuing
to steadily increase in number of species (reported in this paper to be 43),
abundance, and distribution. In general however, their impacts are not well
quantified in either environmental or economic terms and current management
to reduce their impacts is limited and lacking direction. Although carp Cyprinus
carpio have received some attention, very little is known about the impacts
and even the distribution of most species. There is a lack of recognition
of the problem, inconsistency in legislation, policy, and approaches across
jurisdictions, and no nationally coordinated on-the-ground management actions.
Where legislation and policy is available it is not always used to good effect.
This paper provides a synthesis of existing knowledge of alien fishes in
Australia, suggests a new management approach, and recommends priority management
actions.
Keywords invasive fishes; control; impacts; management;
benefit:cost; carp
M03068; Received 10 October 2003; accepted 26 February 2004; Online publication
date 3 August 2004
New Zealand Journal of Marine and Freshwater Research, 2004, Vol. 38:
457-472
0028-8330/04/3803-0457 © The Royal Society of New Zealand 2004
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