The Nature Conservation Trust’s (NCT) conservation work on private lands is helping to protect habitat for a range of frogs, including the giant barred frog and green-thighed frog species. Both frogs are NCT priority endangered species and have been identified because of their importance to the health of entire biospheres.

Unlike most animals, frogs live on land and water. The fact that they also possess permeable skin means that frogs are highly sensitive to environmental changes and vulnerable to human disturbances.

Frogs can therefore be accurate indicators of the health of an environment; indeed, some people believe that frogs are indicative of the health of an entire biosphere.

Frogs are dependent on water for habitat, feeding and reproduction. They are vulnerable to changes in water quality and drainage patterns, and frog populations are at risk from pollution, infectious diseases, habitat loss, invasive species and climate change. Anything that disturbs their fragile habitat – from agriculture, development and timber harvesting to grazing, sedimentation or pollution – can have disastrous impacts on species like the giant barred and green-thighed frogs.

The giant barred frog lives on the coast and ranges from south-eastern Queensland to the Hawkesbury River in NSW. The giant barred frog is listed as endangered in NSW.

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The green-thighed frog lives in isolated populations along the coast and ranges from just north of Wollongong to south-eastern Queensland. The green-thighed frog is listed as vulnerable in NSW.

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