Spatial modelling of bilby (Macrotis lagotis) and rabbit (Oryctolagus cuniculus) pellets within a predator-proof enclosure
Article
Article Title | Spatial modelling of bilby (Macrotis lagotis) and rabbit (Oryctolagus cuniculus) pellets within a predator-proof enclosure |
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ERA Journal ID | 2836 |
Article Category | Article |
Authors | Lollback, Gregory W. (Author), Dunwoody, J. Ernest (Author), Mebberson, Rachel (Author), Shuker, Jonathan D. (Author), Page, Tahlie (Author), Hayles, Sarann J. (Author), Rakotopare, Nicolas (Author), Liu, Xiaoye (Author) and Hero, Jean-Marc (Author) |
Journal Title | Australian Mammalogy |
Journal Citation | 40 (1), pp. 93-102 |
Number of Pages | 10 |
Year | 2018 |
Publisher | CSIRO Publishing |
Place of Publication | Clayton South, VIC, Australia |
ISSN | 0310-0049 |
1836-7402 | |
Digital Object Identifier (DOI) | https://doi.org/10.1071/AM16045 |
Web Address (URL) | https://www.publish.csiro.au/AM/AM16045 |
Abstract | A traditional design-reliant estimate of abundance is calculated by multiplying a density estimate obtained from transects to reflect the size of the study area. This type of estimate tells nothing about the nature of a species’ distribution between the samples. In contrast, model-based inference can better estimate abundance by interpolating transect estimates over the study area with the aid of covariates. This study used density surface modelling (DSM) to predict spatial distribution of greater bilby (Macrotis lagotis) and rabbit (Oryctolagus cuniculus) pellets within a predator-proof enclosure at Currawinya National Park, south-west Queensland. Pellets and latrines were counted using distance sampling and plot sampling on 30 PPBio plots during 2012 and 2014. Pellets and latrines were not strongly associated with habitat features, reflecting the generalist nature of both species. Bilby pellets were found on 23 plots in 2012 and 5 plots in 2014. Rabbit pellets were present on 29 plots in 2012 and 16 plots during 2014. These substantial declines in pellet abundances coincided with invasion of the feral cat (Felis catus) into the enclosure. While DSM modelling can allow managers to make informed decisions about applying survey effort or management practices, it is not suited to all species or situations. |
Keywords | distance sampling, pellet, PPBio, predation |
ANZSRC Field of Research 2020 | 310901. Animal behaviour |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | Griffith University |
School of Civil Engineering and Surveying | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q4xz7/spatial-modelling-of-bilby-macrotis-lagotis-and-rabbit-oryctolagus-cuniculus-pellets-within-a-predator-proof-enclosure
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