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Climate: Study finds plant ‘emissions’ counteract small percentage of global warming

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Plant-based aerosols seen as factor in global warming puzzle. Bob Berwyn photo.

Regional effects of plant-based aerosol formation could be significant

By Summit Voice

FRISCO — A warmer climate will spur plants to release more gases that help form clouds, counteracting about 1 percent of effect of heat-trapping greenhouse gases, according to research by IIASA and the University of Helsinki.

On a regional scale, the effect is more significant, the scientists concluded, finding that in places like Finland, Siberia, and Canada, the negative feedback loop could counteract  up to 30 percent of warming in more rural, forested areas where anthropogenic emissions of aerosols were much lower in comparison to the natural aerosols. Continue reading

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Mangrove forests tabbed as key carbon sinks

New research highlights importance of coastal preservation

New research show mangrove forests are some of the world's most important carbon sinks.

By Summit Voice

Coastal mangrove forests store more carbon than almost any other forest on Earth, according to a study conducted by a team of U.S. Forest Service and university scientists. Their findings are published online in the journal Nature Geoscience.

A research team from the U.S. Forest Service’s Pacific Southwest and Northern research stations, University of Helsinki and the Center for International Forestry Research examined the carbon content of 25 mangrove forests across the Indo-Pacific region and found that per hectare, mangrove forests store up to four times more carbon than most other tropical forests around the world.

“Mangroves have long been known as extremely productive ecosystems that cycle carbon quickly, but until now there had been no estimate of how much carbon resides in these systems. That’s essential information because when land-use change occurs, much of that standing carbon stock can be released to the atmosphere,” says Daniel Donato, a postdoctoral research ecologist at the Pacific Southwest Research Station in Hilo, Hawaii. Continue reading

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