Status
IUCN Classification:
Vulnerable
(International Union for Conservation of Nature)
Bioregion occurrence:
(this is not a distribution map)
State occurrence:
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Litoria daviesae
Family: Hylidae
Common name: Davies' Tree Frog
Conservation Information
Suspected threatening processes
- Inappropriate catchment management, including degraded water quality
- Exotic predators (e.g. trout, Gambusia)
- Disease/pathogens (e.g. chytrid fungus, viruses)
- Habitat modification (e.g. vegetation clearing, invasive weeds)
Population size: An estimate of the total number of adults present in the species entire range is 10001-50000 individuals, or size is unknown but suspected to be large. Factors affecting population size and distribution are unknown or unsubstantiated.
Population trend in Australia over the past 50 years: Trend unknown but population size suspected to be decreasing.
Knowledge of population trend in Australia: Not currently monitored.
Population concentration: Majority concentrates at more than 25 locations. (e.g. the number of sites in which individuals group together either seasonally, such as breeding sites, or they may occupy discrete habitat patches within the broader landscape, such as discrete water bodies or drainage units.)
Ongoing management activities in Australia: Management mostly related to enforcement of conservation laws.
Reproductive potential for recovery: The average number of eggs deposited per adult female per year is 201-1000 eggs/female/year. Minimum age at which females are known or suspected to first reproduce is 4-6 years.
Range size in Australia: The size of the geographic area over which the taxon is distributed: 80,001-1,000,000 km² (up to 12% area of Australia or about the area of South Australia).
Distribution trend: Area occupied has declined by 25-74%. (This is an estimate of change in the portion of the total range that is occupied or utilised; it may not equal the change in total range.)
Knowledge of distribution in Australia: Broad range limits or habitat associations are known, but local occurrence cannot be predicted accurately.
References
Barker, J., G.C. Grigg and M.J. Tyler. 1995. A Field Guide to Australian Frogs. Surrey Beatty & Sons: Chipping Norton.
Cogger, H.G. 2000. Reptiles and amphibians of Australia. Reed Books: Sydney.