The importance of grasstrees (Xanthorrhoea preissii) as habitat for mardo (Antechinus flavipes leucogaster) during post-fire recovery
Marnie L. Swinburn A B , Patricia A. Fleming C F , Michael D. Craig A , Andrew H. Grigg D , Mark J. Garkaklis A B , Richard J. Hobbs E and Giles E. St.J. Hardy AA School of Biological Sciences and Biotechnology, Murdoch University, Murdoch, WA 6150, Australia.
B Department of Environment and Conservation, Swan Region, PO Box 1167, Bentley Delivery Centre, Bentley, WA 6983, Australia.
C School of Veterinary and Biomedical Sciences, Murdoch University, Murdoch, WA 6150, Australia.
D Alcoa World Alumina Australia, Pinjarra, WA 6208, Australia.
E School of Environmental Science, Murdoch University, Murdoch, WA 6150, Australia.
F Corresponding author. Email: T.Fleming@murdoch.edu.au
Wildlife Research 34(8) 640-651 https://doi.org/10.1071/WR07035
Submitted: 20 March 2007 Accepted: 1 November 2007 Published: 18 December 2007
Abstract
Grasstrees (Xanthorrhoea) are an important structural component of many Australian ecosystems and also an important resource for many fauna species. Grasstrees have distinctive morphologies, with a crown of long thin leaves and skirts, the latter of which are accumulated dead leaves; both are incinerated by fire. This study determined the morphological features of Xanthorrhoea preissii, which change in response to fire from 6 months to 21 years post-burn. In addition, using radio-telemetry and spool-tracking, we determined that grasstrees are utilised as foraging and nesting resources for mardos (Antechinus flavipes leucogaster (Gray, 1841), Marsupialia: Dasyuridae). Recently burnt grasstrees (6 months post-burn) appeared not to be used by mardos at all. We found few mardos in these recently burnt sites, and the one individual we managed to track for 126 m utilised only a single grasstree: a 2-m-tall multiple-crowned grasstree that had escaped the fire was used as a nest site. For sites 5 years post-burn, mardos selectively utilised grasstrees with larger crown areas and those with a greater number of crowns compared with a random sample of available trees. At the 14-year post-burn sites, mardos still demonstrated some selection for grasstrees, although no specific single feature could be determined as most significant. We recorded humidity and temperature buffering effects in association with post-burn accumulation of grasstree skirt material and found that even dead grasstree ‘logs’ were an important resource for nests. We conclude that mardos utilise both live and dead grasstrees for foraging and nest sites, possibly owing to the availability of dense cover, a buffered microclimate, and potentially also food resources. Fire-management policies that promote habitat heterogeneity and retain several intact-skirted grasstrees within the landscape are likely to benefit mardos.
Acknowledgements
Our thanks to Ian (Sam) Freeman (DEC) and Dacre Allen (Alcoa) for their assistance in site access, Stefan de Haan (DEC) for providing information on the fire history of study sites, Melanie Norman for field and office assistance, Christine Davis, Angela Mercier, Nicole Moore for assistance in the field, come rain or shine, Rod Armistead for useful discussions and field assistance, Ron Wooller, Trudy Paap, Marie Murphy and Damien Cancilla for the provision of field equipment and Naomi Kerp (Alcoa) for help with minesite safety analyses. This project was funded by Murdoch University, Alcoa World Alumina Australia and the Australian Research Council (Linkage Grant No. LP0455309). Animal trapping was approved by the Murdoch University Animal Ethics Committee (approval no. W1103/04) and conducted in accordance with the Department of Environment and Conservation’s licence to take fauna (licence no. SF004890).
Anderson, T. J. C. , Berry, A. J. , Amos, J. N. , and Cook, J. M. (1988). Spool-and-line tracking of the New Guinea spiny bandicoot, Echymipera kalubu (Marsupialia, Peramelidae). Journal of Mammalogy 69, 114–120.
| Crossref | GoogleScholarGoogle Scholar |
Bedford, D. J. (1992). Australian grasstrees. Australian Natural History 24, 42–50.
Braithwaite, R. W. (1979). Social dominance and habitat utilization in Antechinus stuartii (Marsupialia). Australian Journal of Zoology 27, 517–528.
| Crossref | GoogleScholarGoogle Scholar |
Cockburn, A. , and Lazeby-Cohen, K. A. (1992). Use of nest trees by Antechinus stuartii, a semelparous lekking marsupial. Journal of Zoology 226, 657–680.
Frazer, D. S. , and Petit, S. (2007). Use of Xanthorrhoea semiplana (grass-trees) for refuge by Rattus fuscipes (southern bush rat). Wildlife Research 34, 379–386.
| Crossref | GoogleScholarGoogle Scholar |
Keiper, P. , and Johnson, C. N. (2004). Diet and habitat preferences of the Cape York short-nosed bandicoot (Isoodon obesulus peninsulae) in north-east Queensland. Wildlife Research 31, 259–265.
| Crossref | GoogleScholarGoogle Scholar |
Laidlaw, W. S. , and Wilson, B. A. (2006). Habitat utilisation by small mammals in a coastal heathland exhibiting symptoms of Phytophthora cinnamomi infestation. Wildlife Research 33, 639–649.
| Crossref | GoogleScholarGoogle Scholar |
Lamont, B. B. , Wittkuhn, R. , and Korczynskyj, D. (2004). Ecology and ecophysiology of grasstrees. Australian Journal of Botany 52, 561–582.
| Crossref | GoogleScholarGoogle Scholar |
Marchesan, D. , and Carthew, S. M. (2004). Autecology of the yellow-footed antechinus (Antechinus flavipes) in a fragmented landscape in southern Australia. Wildlife Research 31, 273–282.
| Crossref | GoogleScholarGoogle Scholar |
Morcombe, M. K. (1967). The rediscovery after 83 years of the dibbler Antechinus apicalis (Marsupialia, Dasyuridae). Western Australian Naturalist 10, 103–111.
Schmidt, W. , and Mason, M. (1973). Fire and fauna in the northern jarrah forest of Western Australia. Western Australian Naturalist 12, 162–164.
Stokes, V. L. , Pech, R. P. , Banks, P. B. , and Arthur, A. D. (2004). Foraging behaviour and habitat use by Antechinus flavipes and Sminthopsis murina (Marsupialia: Dasyuridae) in response to predation risk in eucalypt woodland. Biological Conservation 117, 331–342.
| Crossref | GoogleScholarGoogle Scholar |
Tulloch, A. I. , and Dickman, C. R. (2006). Floristic and structural components of habitat use by the eastern pygmy-possum (Cercartetus nanus) in burnt and unburnt habitats. Wildlife Research 33, 627–637.
| Crossref | GoogleScholarGoogle Scholar |
Whelan, R. J. , Langedyk, W. , and Pashby, A. S. (1980). The effects of wildfire on arthropod populations in jarrah–banksia woodland. Western Australian Naturalist 14, 214–220.