Some recent notes from Lizard Island on the Great Barrier Reef

Nothing like the disaster area that the Greenies predicted

The Great Barrier Reef’s resilience has been mightily challenged and it narrowly escaped being placed on UNESCO’s list of World Heritage Sites in Danger last year. The one-two punch of Cyclone Ita in April 2014 and Cyclone Nathan just one year later left Lizard Island reeling. A coral bleaching event in the summer of 2016, resulting from a number of marine heatwaves on top of an already elevated sea temperature, dealt it a further blow.

Yet the reef displays a remarkable ability to regenerate and flourish. “There are a lot of people here studying recovery from disaster, and things are coming back after the cyclones and the bleaching,” Dr Anne Hoggett tells me during an afternoon tour of the research station.

She and her husband, Dr Lyle Vail, were appointed directors of the facility in 1990 and Anne has been working on the Lizard Island field guide, a constantly evolving resource detailing more than 7000 different ­species. “I think you could multiply that number of species by at least five, and people are discovering new ones here all the time,” she says.

Back at Clam Gardens, the cuttlefish has found a mate. Diaphanous skirts rippling, the pair frills up the side of a sherbet-coloured bommie, a ­stand-alone coral outcrop that’s been split like a watermelon by one of the recent cyclones. It looks like a tragedy, until Penny points out the crack has merely increased the surface area of the bommie and that the polyps, like busy little construction workers, are already starting to build on the ­foundations of their ancestors.

Drifting over the columns and canyons of reef we spy several ­thickets of staghorn coral, their tips a spark of pale, luminescent blue. “It’s nice to see,” Penny says, ­surfacing with a smile. “It’s encouraging.”

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The ‘evil twin of global warming’ is melting starfish and other sea creatures, scientists discover

The usual rubbish.  Warming would cause the oceans to OUTGAS CO2, thus making the seas LESS acidic. Below is just an experiment which does not duplicate natural conditions.  It must have been unpleasant for the sea creatures to have acid poured on them.  Are Greenies allowed to do that?  They pretend to be zealous about looking after nature

Sea creatures are literally being eaten away and ‘dissolved’ by pollution, scientists have discovered.

It’s feared that high levels of carbon dioxide in the water could cause irreparable damage to marine ecosystems after tests found acute levels of the gas cause starfish to dissolve.

A team of marine scientists conducted a four-day experiment at Loch Sween on Scotland’s west coast to measure the response to short-term carbon dioxide exposure.

Previously, tests had focused on the effect high levels of the gas had on individual plants or animals, leaving a gap in knowledge about how whole marine ecosystems respond to sudden influxes of carbon dioxide.

When high levels of carbon dioxide enters the oceans it causes them to become more acidic due to a process that’s been described as ‘global warming’s evil twin’.

Researchers from Heriot-Watt University in Edinburgh and Glasgow University pumped water enriched with carbon dioxide into chambers placed over the coralline algal ecosystem and monitored the community’s response before, during and after exposure.

The experiment revealed acute exposure led to net dissolution, meaning calcified organisms such as the coralline algae and starfish were dissolving.

Heidi Burdett, Heriot-Watt University research fellow, said: ‘We found that there was a rapid, community-level shift to net dissolution, meaning that within that community, the skeletons of calcifying organisms like starfish and coralline algae were dissolving.

‘If you think of pulses of carbon dioxide being carried on the tide to a particular site, it’s like a flash flood of carbon dioxide.

‘Our continued monitoring of the site directly after the carbon dioxide exposure found recovery was comparably slow, which raises concern about the ability of these systems to ‘bounce back’ after repeated acute carbon dioxide events.’

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