Proactive development of invasive species damage functions prior to species reintroduction

摘要: Abstract Damage function models can determine the nature of relationships between pest population and impact, provide guidance about when control is required. However, damage functions usually assess risk to species currently occupying conservation areas. are not used predict yet be reintroduced While impacts several mammalian species, such as rats (Rattus spp.), relatively well-known in urban forest fragments, hedgehogs (Erinaceus europaeus) understudied invasive mammals, their fragments unknown. Conservation areas within cities important habitat for native a focus current efforts. We developed describing relationship relative abundance (determined using chew card index) potential impact (estimated by egg mortality artificial nests) New Zealand environment. Egg was positively related hedgehog abundance, although some occurred even at lowest abundances measured. managers should prioritise sites highest and/or containing high value likely risk. Our results demonstrate need proactively threats protected Further, we show that an objective means assessing prior reintroduction species.