Wednesday, 14 March 2012

A rare frog the NSW Minister for Resources and Energy & Anchor Resources intends to ignore?


Giant Barred Frog found on the Wild Cattle Creek property
Scientific name: Mixophyes iteratus
Conservation status in NSW:
Endangered
National conservation status: Endangered
Image found at

It is no secret that NSW Minister for Resources and Energy, Chris Hartcher, is enthusiastic at the prospect of mining on the Mid and Far North Coast – particularly when it comes to gold and antimony mining on the Dorrigo Plateau.

A plateau which takes in the Clarence River catchment high country which supplies fresh water to an estimated 125,419 residents (based on 2010 ERP figures) in Coffs Harbour City and Clarence Valley Shire local government areas.

Local government areas falling within a region which has a population expected to grow more than 28% to around 424,400 by 2031.

Given the ongoing exploration within Anchor Resources Limited’s Wild Cattle Creek EL 6388 lease and the corporation’s recent history of environmental degradation, one has to wonder why Minister Hartcher and his department head have not yet thought fit to insist on a formal environmental assessment of the lease area.

NSW Department of Environment and Conservation:

Description

Giant Barred Frogs are large frogs, up to 115 mm in length. They are olive to dark brown above with paler or darker blotches, and cream to pale yellow below. The skin is finely granular. The pupil of the eye is vertical and the iris is pale golden in the upper half and brown in the lower half. The call is a deep ‘ork’ breaking into a series of ‘orks’ and grunts. The Giant Barred Frog can be most easily distinguished from other barred frog species by the black thighs with smaller yellow spots, distinct barring on the limbs, dark blotches on the sides, absence of a creamy stripe on the upper lip and the distinctive eye colour.

Location and habitat


Distribution

Coast and ranges from south-eastern Queensland to the Hawkesbury River in NSW. North-eastern NSW, particularly the Coffs Harbour-Dorrigo area, is now a stronghold. Considered to have disappeared south of the Hawkesbury and there are no recent records from the Blue Mountains. [my bolding]

Habitat and ecology
  • Giant Barred Frogs forage and live amongst deep, damp leaf litter in rainforests, moist eucalypt forest and nearby dry eucalypt forest, at elevations below 1000 m.
  • They breed around shallow, flowing rocky streams from late spring to summer.
  • Females lay eggs onto moist creek banks or rocks above water level, from where tadpoles drop into the water when hatched.
  • Tadpoles grow to a length of 80 mm and take up to 14 months before changing into frogs. When not breeding the frogs disperse hundreds of metres away from streams. They feed primarily on large insects and spiders.
Threats
  • Reduction in water quality, from sedimentation or pollution.
  • Changes in water flow patterns, either increased or decreased flows.
  • Reduction of leaf-litter and fallen log cover through burning.
  • Timber harvesting and other forestry practices.
  • Vegetation clearance.
  • Predation on eggs and tadpoles by introduced fish.
  • Weed spraying close to streams.
  • Chytrid fungal disease.

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