• Publications
  • Influence
The ecological consequences of social wasps (Vespula spp.) invading an ecosystem that has an abundant carbohydrate resource
Abstract Introduced Vespula wasps have successfully invaded beech ( Nothofagus ) forests in New Zealand. By collecting honeydew, an abundant carbohydrate resource, wasps can reach high numbers.Expand
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Ecological effects and management of invasive alien Vespidae
Insect species associated with human goods continue to be accidentally introduced into new locations. A small proportion of these introduced species become invasive, causing a range of impacts in theExpand
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The role of introduced predators and competitors in the decline of kaka (Nestor meridionalis) populations in New Zealand
We investigated the role of introduced predators and competitors in the population decline of kaka, Nestor meridionalis, a previously abundant forest parrot endemic to New Zealand. We providedExpand
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Impacts of exotic invertebrates on New Zealand's indigenous species and ecosystems
Biological invasions have significantly affected New Zealand's native species and ecosystems. Most prominent are the effects of exotic mammals and plants, whereas few invertebrate invasions are knownExpand
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The diversity and origin of exotic ants arriving in New Zealand via human-mediated dispersal
The number of exotic ant species being dispersed to new regions by human transportation and the trade pathways responsible for this are poorly understood. In this study, the taxonomic diversity,Expand
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Summary: Introduced common wasps (Vespula vulgaris) are widespread, abundant pests in New Zealand. They compete for food with native birds and feed on native invertebrates. We poisoned wasps annuallyExpand
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Declines in common, widespread native birds in a mature temperate forest.
Common, widespread species are important for ecosystem structure and function. Although such species have declined in some parts of the world, for most ecosystems there is a lack of information aboutExpand
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Restructuring of Lepidoptera communities by introduced Vespula wasps in a New Zealand beech forest
Abstract Introduced social wasps (Vespula vulgaris) reach high densities in some New Zealand beech forests, because honeydew provides an abundant high-energy food source. We manipulated wasp densityExpand
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Dynamics of common wasps in New Zealand beech forests: a model with density dependence and weather
Summary 1. Nest densities of the common wasp (Vespula vulgaris (L.)) were monitored at six sites for 13 years in the honeydew-rich southern beech (Nothofagus spp.) forests of New Zealand’s SouthExpand
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New Zealand's Performance Based Research Funding (PBRF) model undermines Maori research
(2009). New Zealand's Performance Based Research Funding (PBRF) model undermines Maori research. Journal of the Royal Society of New Zealand: Vol. 39, No. 4, pp. 233-238.
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