Scientists say bleaching could be ‘canary in the coalmine’ for climate impact as eastern Tasmanian sea temperatures rise.
Bleaching in marine sponges in temperate waters off Tasmania’s east coast has been observed for the first time, with scientists warning the discovery could be an indicator of climate change in deeper reef systems.
Researchers at the University of Tasmania’s Institute of Marine and Antarctic Studies used seafloor surveys to discover the bleaching of cup sponges in the Flinders commonwealth marine reserve after heatwave events.
The sponges, which are ordinarily reddish-purple in colour, live in a mesophotic ecosystem – the twilight zone at depths between 30 metres and 150 metres – that bridges brightly lit shallow waters and the darkness of deep ocean.
https://amp-theguardian-com.cdn.amp...n-warming-tasmanian-waters-for-the-first-time
Bleaching in marine sponges in temperate waters off Tasmania’s east coast has been observed for the first time, with scientists warning the discovery could be an indicator of climate change in deeper reef systems.
Researchers at the University of Tasmania’s Institute of Marine and Antarctic Studies used seafloor surveys to discover the bleaching of cup sponges in the Flinders commonwealth marine reserve after heatwave events.
The sponges, which are ordinarily reddish-purple in colour, live in a mesophotic ecosystem – the twilight zone at depths between 30 metres and 150 metres – that bridges brightly lit shallow waters and the darkness of deep ocean.
https://amp-theguardian-com.cdn.amp...n-warming-tasmanian-waters-for-the-first-time