Olongburra Frog, Wallum Sedgefrog
© 2010 Eric Vanderduys (1 of 4)
Distribution and Habitat
Litoria olongburensis is distributed from L. Woongeel, Fraser Is., s. to near Woolgoolga including Bribie, Moreton and Stradbroke Is., s.e. Qld (Hines et al. 1999). The area of occupancy of the species is approximately 9000 km2 (map in Hines et al. 1999). There is no information on population size, structure or dynamics (Hines et al. 1999). Litoria olongburensis exhibits genetic structuring on a north-south gradient (James 1996). Northern NSW, North Stradbroke Is., Moreton Is. and Cooloola-Fraser populations are each genetically differentiated and significantly divergent from each other (James 1996). Populations occurring on these islands should be considered separate management units or demographically independent sets of populations due to their insular nature (James 1996).
Litoria olongburensis is known from a number of mainland and island conservation reserves and public lands in Qld and NSW. In Qld, L. olongburensis has been recorded from Great Sandy, Cooloola, Noosa, Bribie Is., Moreton Is. and Blue L. NP, Beerwah, Tuan and Toolara SF, crown lands north of Coolum and West of Marcoola (Sunshine Coast) and North Stradbroke Is. (Tyler 1997). In NSW L. olongburensis has been recorded from Broadwater, Bundjalung, and Yuraygir NP, Tyagarah and Broken Head Nature Reserves, crown lands south of Yamba and west of Brunswick Heads, Cape Byron Headland Reserve. Also recorded outside of these areas in NSW: west of Tyagarah Nature Reserve, Round Mountain near L. Cudgen, Jali Council land at Newrybar, Cobaki L., Hastings Point (Tyler 1997) and in the Gold Coast Airport land on the NSW ï¿½ Qld border (Hero pers. comm.).
Litoria olongburensis is restricted to coastal lowlands and sand islands where there are low nutrient soils or deep sands (Hines et al. 1999). Vegetation types typical of these environments include heathland, Melaleuca swamp, sedgeland and Banksia woodland (Hines et al. 1999). It occurs in low pH waters characteristic of wallum environments, along flowing creeks, in marshy or swampy habitats (usually temporary or semi-permanent) and their connecting channels, and coastal freshwater lakes, including perched lakes with deep water (often permanent) (Liem & Ingram 1977; James 1996; Ehmann 1997). During wet periods these swamps are heavily inundated and L. olongburensis are found clinging to emergent vegetation (grasses, reeds and Bungwall Fern E. Meyers pers. comm.) During dry periods individuals may be found at the base of sedges, grass clumps and/or Bungwall Fern in the same swamps (E. Meyer pers. comm.). Ingram and Corben (1975) termed L. olongburensis an ï¿½acidï¿½ frog as this species is confined to sandy heaths and their acidic water. Non breeding habitat not known.
Life History, Abundance, Activity, and Special Behaviors
Trends and Threats
Catterall, C.P. and Kingston, M. (1993). Remnant Bushland of South East Queensland in the 1990's: Its Distribution, Loss, Ecological Consequences and Future Prospects. Institute of Applied Environmental Research, Griffith University and Brisbane City Council, Brisbane, Australia.
Ehmann, H. (1997). ''21. Wallum Sedgefrog, Litoria olongburensis.'' Threatened Frogs of New South Wales: Habitats, Status and Conservation. H. Ehmann, eds., Frog and Tadpole Study Group of NSW, Sydney South, Australia, 182-187.
Hines, H., Mahony, M. and McDonald, K. (1999). ''An assessment of frog declines in wet subtropical Australia.'' Declines and Disappearances of Australian Frogs. A. Campbell, eds., Environment Australia, Canberra, 44-63.
Ingram, G. J., and McDonald, K. R. (1993). ''An update on the decline of Queensland's frogs.'' Herpetology in Australia: A diverse discipline. D. Lunney and D. Ayers, eds., Transactions of the Royal Zoological Society of New South Wales, 297-303.
Ingram, G.J. and Corben, C.J. (1975). ''The frog fauna of North Stradbroke Island, with comments on the 'acid' frogs of the wallum.'' Proceedings of the Royal Society of Queensland, 86, 49-54.
James, C. (1996). Conservation Genetics of Island and Mainland Populations of the Sedge Frogs Litoria cooloolensis and Litoria olongburensis. Unpublished final report to Queensland Department of Environment and Heritage, Department of Zoology and Centre for Conservation Biology, University of Queensland.
Liem, D.S and Ingram, G.J. (1977). ''Two new species of frogs (Anura: Myobatrachidae, Pelodryadidae) from Queensland and New South Wales.'' Victorian Naturalist, 94, 255-262.
Tyler, M.J. (1997). The Action Plan for Australian Frogs. Wildlife Australia, Canberra, ACT.
Written by J-M. Hero; H. Hines; E. Meyers; R. Goldingay; L. Shoo; M. St (m.hero AT mailbox.gu.edu.au), Griffith University
First submitted 2002-03-15
Edited by Ambika Sopory, Jean-Marc Hero (2008-09-16)
Species Account Citation: AmphibiaWeb 2008 Litoria olongburensis: Olongburra Frog <http://amphibiaweb.org/species/1288> University of California, Berkeley, CA, USA. Accessed Sep 24, 2020.
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Citation: AmphibiaWeb. 2020. <http://amphibiaweb.org> University of California, Berkeley, CA, USA. Accessed 24 Sep 2020.
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