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A Real-Time Interactive System for Studying Confrontational Pursuit Behavior in Rodents

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Invasive Urban Mammalian Predators: Distribution and Multi-Scale Habitat Selection.

Kim F Miller¹, Deborah J Wilson², Stephen Hartley³

¹Department of Zoology, University of Otago, P.O. Box 56, Dunedin 9054, New Zealand.

|October 27, 2022

Summary

This summary is machine-generated.

Invasive predators threaten urban green space restoration. Habitat features and proximity to forests influence predator presence, necessitating coordinated control programs involving residents.

Keywords:

Erinaceus europaeus Mus musculus Rattus norvegicus Rattus rattus Trichosurus vulpecula brushtail possum city hedgehog house mouse rat residential garden

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Area of Science:

Urban ecology
Invasive species management
Conservation biology

Background:

Invasive mammalian predators pose significant challenges to ecological restoration in urban environments.
Understanding predator distribution is crucial for effective biodiversity conservation in cities.

Purpose of the Study:

To identify fine- and landscape-scale habitat characteristics associated with five urban predator species in New Zealand cities.
To examine seasonal variations in predator presence across different urban green space types.

Main Methods:

Field surveys were conducted in forest fragments, amenity parks, and residential gardens across three New Zealand cities.
Data on predator presence (black and brown rats, European hedgehogs, house mice, brushtail possums) were collected in spring and autumn.
Statistical models were used to analyze habitat associations and landscape factors influencing predator distribution.

Main Results:

Seasonal variations influenced predator detections for all five species.
Rodents were less common in residential gardens, while mice favored amenity parks. Hedgehogs were least detected in forest fragments, and possums were most frequent in forest fragments.
Proximity to forest patches affected predator distribution: positively for possums and hedgehogs in amenity parks, negatively for rats in amenity parks, and positively for rats in residential gardens. Specific habitat features like shrub cover and compost heaps were associated with rat presence.

Conclusions:

Habitat characteristics and landscape context significantly influence urban predator distribution.
Effective ecological restoration requires integrated, city-wide predator control strategies that include community participation.