Softwoods such as pine are traditionally less stable, less durable and more prone to bleaching than their more stoic sisters.
Environmental awareness has pushed denim laundries to improve techniques for bleaching and coating jeans to give them different looks, Corrente said.
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They attribute the decline to storms, a coral-feeding starfish and bleaching linked to climate change.
But the industry has a large offsetting advantage: It is still rebounding from a shakeout a few years ago after environmentalists forced paper companies to stop using chlorine as a bleaching agent (many shifted to supposedly greener hydrogen peroxide).
To the naked eye, bleaching is when the coral reefs turn white and eventually die.
John Gunn, head of AIMS, said it was difficult to stop the storms and bleaching but researchers could focus their short-term efforts on the crown-of-thorns starfish, which feasts on coral polyps and can devastate reef cover.
This is boiled to remove chlorophyll and dried for bleaching.
There are those that say that the best minds our country have to offer have no place swabbing urinals and bleaching vomit, that they burn themselves and slip on the floor, that they try and use the wrong end of the plunger and cry all the time.
But while the cooling effects of these particles may be keeping the corals from growing, according to this work, it might also be preventing bleaching.
BBC: Particles from fossil fuels 'affect the growth of corals'
Two severe coral bleaching events in 1998 and 2002 due to ocean warming also had "major detrimental impacts" on the central and northern parts of the reef, the study found, putting the impact at 10%.
Ove Hoegh-Guldberg of the University of Queensland, who has been studying coral bleaching since the early 1980s, presented new work to the conference on what exactly it is that causes the algae to become burdensome.
The series of 27 panels uses satellite images to show the threats facing these unique places, including shrinking glaciers, coral bleaching, disappearing permafrost, desertification and floods.
"The women in the market had destroyed their skin with all this kind of beauty products, bleaching products, and so I saw the need for assisting them to reverse the process because otherwise it would become a social problem, " she said.
Bleaching is triggered by high temperatures and its frequency has increased, probably in response to global warming.
ECONOMIST: The Great Barrier Reef: Dr De��ath v the killer starfish | The
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