Gorse mites to myxomatosis : assessing their impact on the environment

Abstract

The introduction of organisms into New Zealand, for the purpose of controlling pests, involves many risks and uncertainties. Prior to the importation of these biological control agents, an environmental assessment is required to evaluate whether the potential benefits outweigh the adverse impacts.

This analysis determines the extent to which the current procedure assesses the relevant impacts in an efficient and effective manner and addresses conflicting values. Limitations that are identified are primarily: lack of understanding about the ecological system being manipulated; the fragmented legislation; and the differing values that the public attribute to the target organism and the biocontrol agent.

Recommendations address four areas of weakness: the collation of information; funding; the timing of the environmental assessment; and the effectiveness of the procedure in dealing with all biocontrol proposals. Some of the recommended changes could occur as a result of the proposed Hazardous Substances and New Organisms Law Reform.