Australia: Great Barrier Reef in very poor condition

Australia's Great Barrier Reef is in very poor condition because of climate change, over fishing and land clearing, a state agency said on FridayThe agency has downgraded the reef's status to the lowest level, which could jeopardise its World Heritage status.The Great Barrier Reef Marine Park Authority (GBRMPA) said the health of the world's largest coral reef system, off the northeast coast of the Queensland state, had deteriorated since its last review, in 2014, but the problems the reef faces were not insurmountable."This report draws attention to the fact that the outlook for the Great Barrier Reef, the long term outlook, is very poor- that's largely driven by climate change," GBRMPA's Chief Scientists David Wachenfeld told reporters in Sydney."Despite that, with the right mix of local actions to improve the resilience of the system and global actions to tackle climate change in the strongest and fastest way possible, we can turn that around."The report, which is compiled every five years, painted a deteriorating picture of widespread coral bleaching, habitat loss and degradation caused by human-induced climate change, overfishing, poor water quality, and coastal land clearing for grazing.Stretching over 2,300km (1,400 miles), the reef was designated a World Heritage site in 1981 for its "enormous scientific and intrinsic importance".It is also home to 400 types of coral, 1,500 species of fish and 4,000 types of molluscs. But in recent years the reef has been increasingly damaged by warmer seas which have killed off coral and affected its long-term health.Some parts of the reefs remained in good condition but many species including dolphins, dugongs, sharks, rays and turtles were being threatened.UNESCO's World Heritage Committee last year called for global action on climate change to protect five large coral reefs, including the Great Barrier Reef.