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HotScience last updated: 19 February 2003
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Norbury, G. 2001. Conserving dryland lizards by reducing predator-mediated apparent competition and direct competition with introduced rabbits. Journal of Applied Ecology 38: 1350-1361.
This paper examines the potential for introduced rabbits to cause extinction of native secondary prey species (common skinks) in dry grasslands. Because rabbits are the preferred prey of introduced predators (ferret and cats), rabbit abundance dictates predator abundance and predators’ consumption of native skinks. More rabbits mean more predators, and sudden declines in rabbit abundance create acute peaks in consumption of skinks because predators switch their diet. Rabbits have further impacts because they consume the habitat of native skinks. When skink numbers reach critically low levels, predation can drive them locally extinct.
Norton, D.A.; Miller, C.J. 2000. Some issues and options for the conservation of native biodiversity in rural New Zealand. Ecological Management and Restoration 1: 26-34.
For the 70% of New Zealand in private ownership, most biodiversity conservation has to occur within a landscape that must also provide a productive return to landowners. This paper argues that four key issues need to be considered, and stresses the importance of taking an integrated landscape management approach.
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