Precious world heritage ecosystem in Tasmania's west slowly drying out as scientists watch in despair

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Unusually dry weather is leaving the state's Wilderness World Heritage Area sensitive to fire. It's a prospect that threatens a living fossil that traces its history to the ancient super-continent Gondwana.

Unlike other iconic Aussie trees such as eucalypts and banksias, these plants are not adapted for fire.University of Tasmania fire expert David Bowman says many of the ancient species in Tasmania's west are not adapted to thrive after a burn.The landscape of dead trees could become more common as climate change continued to dry Tasmania's west, the professor said.

Last summer I rafted the Franklin River, which flows through dense cool climate rainforest. It was lovely not to contend with pouring rain however days on end of sunshine was disconcerting in a place famous for being wet. The ancient trees grow by the river, sometimes dipping graceful leaves in the water. But they can also be found deeper in the rainforest taking up water from the moist organic soil.

Author, Zoe Kean, and her dad the under a very dry myrtle on the banks of the Franklin River in December 2021. The moss on the trunk is almost crisp. "Short, sharp periods of very dry atmospheric conditions and drying soil seem to be able to create, really very stressful conditions very quickly," he said.

Returning to "cultural burning with Aboriginal involvement" could be combined with "modern, early detection technology and remote area firefighting" he said.

 

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zoe_kean The drying-up of western Tasmania will have an impact on hydro-power (proposed pumped hydro at Cethana Lake needed). Saving water now means imports from Victoria (brown coal powered)

Wow. I thought Tasmanias West got heaps of rain. If this is true, being so close to the Arctic, one would have to question whats going on down there? Guess the arctic is changing too.

Its dying out to make way for the new growth. Nature.

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