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Frightening amount of world heritage area burned in Australia

Saturday، 18 January 2020 01:42 AM

At least 80% of the Blue Mountains world heritage area and more than 50% of the Gondwana world heritage rainforests have burned in Australia’s ongoing bushfire crisis.
The scale of the disaster is such that it could affect the diversity of eucalypts for which the Blue Mountains world heritage area is recognised, said John Merson, the executive director of the Blue Mountains World Heritage Institute.
The data is based on a Guardian Australia analysis of areas burned in New South Wales and Queensland and was confirmed by the NSW government.
“This is totally, totally unique. As everybody keeps saying, it’s unprecedented,” he said.
The area is renowned for the diversity of its vegetation and is home to about a third of the world’s eucalypt species.
While most are fire-adapted and can regenerate, many of the species depend on long intervals between fires, Merson said.
“We had a very large fire in 2013. It’s only six years after that,” he said.
“The eucalypts can be very badly reduced in diversity if fires come through in too short and intense intervals. Their numbers will virtually collapse.”
He said the full impact on tree species and wildlife would not be known until more assessments were done as fire grounds became accessible.
But there are concerns about the effect on breeding and feeding habitats for species including the spotted-tail quoll and the brush-tailed rock-wallaby.
The fires have also burnt swamp communities that release water slowly and are important water resources.
They flow into streams that feed into Sydney’s water supply and provide water for wildlife.
It was revealed this week that a rescue mission by NSW fire crews was able to save the only known natural grove of Wollemi pines, so-called “dinosaur trees” that fossil records show existed up to 200mn years ago.
Merson said the fires had entered areas that had not burnt previously and the need for the rescue mission was indicative of the intensity of the fires in the region.
“This is climate change in its most fundamental form,” he said.
“This is right in our face. We’re living it.”
Further north, the fires have devastated parts of the Gondwana rainforest world heritage area, a collection of reserves of subtropical rainforest that span 366,500 hectares across NSW and Queensland.
Guardian Australia used newly released data which combines all burned areas in NSW and Queensland since July 1, 2019, and calculated the area of overlap with world heritage areas.
This analysis shows 53% of the Gondwana rainforest area has burned.
Mark Graham, an ecologist with the Nature Conservation Council of NSW, said since December there had been “significant, additional fire in areas that hadn’t burned” in Barrington Tops, and that most of the Gondwana areas have taken a “massive hit”.
“It’s heart-wrenching. It’s disturbing. It’s frightening.”
Graham said his area had experienced some rain in recent weeks but there were now concerns that sediment washed into the Bellinger River has affected the food sources for the critically endangered Bellinger River snapping turtle.
A spokesman for the NSW Department of Planning, Industry and Environment said understanding the impact of the fires on both world heritage areas was a priority.

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