Article thumbnail
Location of Repository

A spatial analysis of Greater Bilby (Macrotis Lagotis) habitat in south-west Queensland

By Ernest Dunwoody, Xiaoye Liu and Kevin McDougall

Abstract

Greater Bilbies (Macrotis lagotis) once occupied 70% of Australia but are now an endangered species under the Environment Protection and Biodiversity Conservation Act (C'wlth) 1999. A dedicated 29 km2 enclosure to protect reintroduced bilbies from predators was built in Currawinya National Park in south-west Queensland in 2003. Ten bilbies (three male and seven female) were released in the enclosure during the period of December 2005 to September 2006. The objective of this research was to develop a method to identify suitable Greater Bilby habitat from remote sensing imagery. A related objective was to spatially characterize how bilbies used their environment for feeding and resting. Aerial photographs (1:40,000) were used to classify the vegetation and land cover. Soil samples were used to construct a detailed soils map. Radio tracking (2005-06) and field tracking data (2008) were used to identify spatial associations between bilby activities and land cover and soil features in order to spatially characterize bilby microhabitats. These results formed the basis of a Weighted Sum model that accurately identified potential bilby micro-habitats within the enclosure. The analysis showed that bilbies prefer to dig burrows in Acidic Rudosol soils with Shrubland with Dead Wood landcover. Their feed sites occur fairly evenly on Acidic, Basic and Salic Rudosol soils but they preferred Shrubland landcover in which to feed. The modelling results showed that, (i) bilby feeding and resting micro-habitat could be accurately predicted within the confines of the enclosure, (ii) bilbies depended on only a small part of the larger area available to them, (iii) bilbies exhibited distinct preferences for specific soil and landcover types for constructing burrows and feeding and (iv) micro-habitats suitable for bilbies represent only a small percentage of the enclosure

Topics: 291004 Spatial Information Systems
Publisher: Surveying and Spatial Sciences Institute
Year: 2009
OAI identifier: oai:eprints.usq.edu.au:5999

Suggested articles

Citations

  1. (2003). A GIS-based multi-scale approach to habitat suitability modelling', doi
  2. (2003). Aerial Photographs of the Bilby Enclosure at Currawinya National Park, I Melbourne.
  3. (2005). An evaluation of transect, plot and aerial survey techniques to monitor the spatial pattern and status of the bilby (Macrotis lagotis) in the Tanami Desert', doi
  4. (2004). Aspects of the ecology of the Greater Bilby, Macrotis lagotis, in Queensland', Masters thesis, doi
  5. (1990). Distribution and Abundance of the Greater Bilby Macrotis lagotis Reid (Marsupialia: Peramelidae)', doi
  6. (1997). Field management of the bilby Macrotis lagotis in an area of south-western Queensland', doi
  7. (2006). Habitat Preference and Burrow Use of Reintroduced Bilbies (Macrotis lagotis) in Semi-Arid Mulga Lands',
  8. Habitats and diet of the Greater Bilby, Macrotis lagotis Reid (Marsupialia: Peramelidae)', doi
  9. (2001). Integrating spatial multi-criteria evaluation and expert knowledge for GIS-based habitat suitability modelling', doi
  10. (1997). Marsupial Destruction in Queensland 1877-1930', doi
  11. (2007). Modelling and mapping potential hooded warbler (Wilsonia citrina) habitat using remotely sensed imagery', doi
  12. (2008). Multi-scale patterns of habitat use by re-introduced mammals: A case study using medium-sized marsupials', doi
  13. (2003). Reintroduction of the greater bilby, (Macrotis lagotis) (Reid) (Marsupialia: Thylacomyidae), to northern South Australia: survival, ecology and notes on reintroduction protocols', doi
  14. (2004). Spatial prioritization of revegetation sites for dryland salinity management: an analytical framework using GIS', doi
  15. (2001). The effect of habitat type and seasonal conditions on fauna in two areas of the Tanami Desert',

To submit an update or takedown request for this paper, please submit an Update/Correction/Removal Request.