The dominating influence of efficacy above management strategy in the long-term success of alien plant clearing programmes.

摘要: Conservation managers are required to make decisions in complex and uncertain contexts. To strengthen the robustness of conservation decisions, several approaches have been proposed facilitate stakeholder engagement setting objectives priority actions. While such processes led formulation invasive alien plant management strategies achieve specific objectives, long-term consequences trade-offs inherent these not tested. The performance five over 50 years was tested protected area context using empirical data from Table Mountain National Park, South Africa. A simulation model based on for Acacia species a fire-driven ecosystem, focused interaction between strategy clearing efficacy achieving goal or reducing density below 1 per hectare. At near perfect levels efficacy, all converged towards reaching goal, while at lower diverged their ability desired outcomes. Despite working across largest area, that focussed low invasions, maintained least maintenance state time. In contrast, mix post-fire, areas high altitude cleared less annually, but much larger state. higher return previously worked were more successful than post-fire strategy. Strategies solely securing water, performed poorly maintaining overall aliens. However, influence significant substantial difference achieved by varying As such, improving quality work implementation will far greater effect which prioritized how this prioritization is done. acacias likely persist long-term, coupled with correct selection ensure continued gains under improved investment