PLANT A TREE FOR ME!
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RAISED $ - OUR GOAL $500,000

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Spotted Tree Frog (Litoria spenceri)

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OUR CONSERVATION STATUS
  • National: Critically Endangered
  • State: Critically Endangered (NSW), Critically Endangered (VIC)
HOW MANY OF US ARE THERE?

< 1,000 individuals

WHERE DO WE LIVE?

With around 1000 individuals remaining in 12 isolated populations, the Spotted Tree Frog is at risk of disappearing forever. The small population inhabits rocky streams, from Kosciuszko National Park in New South Wales and Alpine National Park, Eildon National Park and Buffalo National Park, and several State Forests in Victoria.

The major decline in the number of individuals is believed to be due to the introduction of the Chytrid fungus, into a previously disease-free population.

OUR HABITAT

The Spotted Tree Frog has an extremely limited range, swift-flowing upland streams in mountainous areas The species is associated with a range of vegetation communities from montane forest at high altitudes to wet and dry forest at moderate to low altitudes respectively. The extent of riparian forest at known locations ranges from virtually non-existent, with scattered riparian tree or shrub species, to a dense canopy of tea trees, shading the stream.

The Spotted Tree Frog is highly sedentary, the adults and juveniles remain in the vicinity of the stream, rarely venturing far from the riparian zone and have been found sheltering and basking in the adjacent riparian vegetation. Adult Spotted Tree Frogs appear to be generalist insectivores, feeding on a variety of flying insects. While tadpoles are benthic browsers, grazing on filamentous algae, scraping periphyton from rocks, and eating benthic detritus. The benthic zone is the ecological region at the lowest level of a body of water such as an ocean or a lake, including the sediment surface and some sub-surface layers.

FAMILY LIFE

Clutches of the Spotted Tree Frog consist of 200 to 1000 eggs. Eggs are laid in narrow spaces beneath large river stones within the stream and eggs are hidden as they adhere to the underside of the rock. Eggs are laid in late spring/early summer and tadpoles reach metamorphosis in late summer/autumn.

Mortality levels are very high until individuals reach two to three years of age. The oldest individual so far recorded, a female, reached 13 years of age.

THREATS TO OUR SURVIVAL
  • Habitat loss and fragmentation due to clearance of native vegetation
  • Predation of eggs and tadpoles by introduced fish, particularly Rainbow Trout
  • Changes to natural water flows and water quality
  • Weed invasion of streamside habitats, particularly by Blackberry
  • Disease – Chytrid fungus

Spotted tree frogs love & need:

Leptospermum

Tea Trees are from a hardy and adaptable genus that grows in many sizes from shrubs to trees, reaching 1–8m tall, rarely up to 20m, with dense branching. The leaves are evergreen, alternate, simple, sharp-tipped, and small, in most species not over 1 cm long. The flowers are up to 3cm diameter. White is the predominant flower colour, but there are a few species which produce pink or red flowers. READ MORE

Melaleuca

Melaleuca fruits are woody, cup-shaped, barrel-shaped or almost spherical capsules, often arranged in clusters along the stems. The seeds are sometimes retained in the fruits for many years, only opening when the plant, or part of it dies or is heated in a bushfire. In tropical areas, seeds are released annually in the wet season. READ MORE

Baeckea

Baeckea is a genus of flowering plants of about 75 species, of which 70 are endemic to Australia. Baeckea is widespread along the coast and tablelands of south-eastern Australia. Two species occur in Western Australia, both in the cool, high-rainfall areas near Albany, in heathy swamps. Greatest species diversity is reached on the Central Coast and Central Tablelands of New South Wales. READ MORE