Habitat use over winter by short-beaked echidnas (Tachyglossus aculeatus) at an intermittently flowing creek in arid north-western New South Wales
Jasmin C. Lawes A B and David B. Croft A
+ Author Affiliations
- Author Affiliations
A School of Biology Earth and Environmental Sciences, University of New South Wales, Sydney, NSW 2052, Australia.
B Corresponding author. Email: j.lawes@unsw.edu.au
Australian Mammalogy 44(1) 87-97 https://doi.org/10.1071/AM20066
Submitted: 5 November 2020 Accepted: 2 April 2021 Published: 26 April 2021
Abstract
The heterogeneity of resource distribution in arid environments plays an important role in habitat selection by consumers. The productivity of the riparian zones of intermittently flowing creeks is typically prolonged, relative to the hinterland, as moisture and nutrients concentrate there. Short-beaked echidnas, Tachyglossus aculeatus, sustain arid populations, attributed to ant and termite availability, low predation, and an ability to exploit habitat remnants. However, the scale of their movements in arid habitats is poorly understood. Thus, we investigated echidna home ranges and the importance of food and shelter availability in habitat selection over one winter. We focussed on the riparian zone of a creek at Mount Wood in Sturt National Park, north-western New South Wales, Australia. Radio tracking (VHF and GPS), scat and habitat selection analyses were conducted. Mean core and peripheral home range areas were 0.16 and 1.042 km2, respectively, with a mean home range overlap of 0.56 km2. Habitat selection differed between juveniles and adults and may have been driven by prey availability (predominantly ants). The preferred shelter was thick leaf litter. We concluded that habitat selection patterns were driven by prey availability (ants) and shelter (leaf litter).
Keywords: ants, behavioural ecology, diet, echidna, habitat use, home range, leaf litter, riparian ecology, shelter, Tachyglossus aculeatus.
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