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Tusked Frog population in the Nandewar and New England Tableland Bioregions (Adelotus brevis - endangered population)



Action Statement

Justification for allocation to this management stream

This is an Endangered Population

Conservation status in NSW: Endangered Population
Commonwealth status: Not listed

Management objectives

This action statement aims to secure this population in the long-term.

Species sightings and management sites across NSW

How will this population be managed?

OEH is currently developing a targeted approach for managing threatened populations. In the interim, the following management actions have been identified for this population.
  • Complete preparation of recovery plan and coordinate its implementation. . .
  • Determine the presence of any populations within the range of the endangered population, and locations of the nearest populations to the boundary designation of the endangered population through surveys.
  • Monitor any located endangered populations, and populations closest to the designated boundary of the endangered population, to determine population changes and identify causes for these changes.
  • Examine voucher specimens from within the designated boundary of the endangered population and from adjoining areas from which populations have disappeared, to determine presence/absence of the disease chytridiomycosis.
  • Examine samples of extant populations adjoining areas within or near the designated area of the endangered population from which the species has disappeared, for the disease chytridiomycosis.
  • Examine the Tusked Frog's biology & ecology (with particular reference to chytrid) & undertake experimental studies to determine why the species has essentially disappeared from the range of the endangered population whilst other frog species remain.
  • Examine voucher specimens from areas within & adjoining the designated boundary of the endangered population for the presence & abundance of agricultural pesticides used in the 1970s & 1980s; determine their likely source & mode of transport.
  • Determine intensities and ranges of relevant types of ultra-violet radiation (likely to have been) present within the designated range of the endangered population, historically and from the 1970s to the present.
  • Determine the nature and impacts of synergistic interactions between atmospheric pollution, chytridiomycosis and ultra-violet radiation on the Tusked Frog, by experimental laboratory and field studies.
  • Identify the boundaries (and their characteristics at that point) of the processes causing the disappearance of the Tusked Frog at altitude via experimental re-introductions in areas adjoining extant populations .
  • Determine the genetic characteristics of the species, and degree, nature and distribution of genetic variations.
  • Determine the nature and degree of impacts of introduced fish (including cyprinids, salmonids & the Plague Minnow) on the species by undertaking field and laboratory studies.
  • Minimise further degradation and removal of habitat, particularly from timber harvesting, removal of dead timber, cattle grazing and inappropriate fire regimes.
  • Control and, where practicable, eradicate introduced fish from habitat.
  • Minimise the spread of the disease chytridiomycosis to and between habitats.
  • Monitor implementation of national (and state, when developed) chytrid Threat Abatement Plans, and implement relevant actions.
  • Review research results and implement/modify management actions accordingly.
  • Inform, educate & involve the community, landholders & stakeholders in the species recovery (incl. production/distribution of fact sheets on the species, threatening processes & recovery strategy, habitat management & protection, surveys & monitoring).
  • Control and monitor feral and domestic ungulate disturbance in known and potential habitat.
  • Control and monitor weeds at known and potential habitat, in particular blackberry and lantana.
  • Review distribution, historical records and conservation status.
  • Survey known or potential sites and establish an annual monitoring program.

Are you or is someone you know doing conservation work for this species?

Contact us to tell us about the work. Your input will help OEH evaluate the status of threatened species and provide a broader picture of conservation work across NSW.