The finding provides more clarity as to how trees factor into the elusive “methane budget” that experts say is vital for climate predictions. (From 2021)
, ecologist Sunitha Pangala, then at the Open University in the United Kingdom, found that trees in the Amazon were responsible for 200 times more methane than trees in other wetland forests, accounting for 44 to 65 percent of the region’s total emissions.
“When I saw this paper, I just said, ‘Holy shit, this is really interesting,’” says Jeffrey White, a professor emeritus at the O’Neill School of Public and Environmental Affairs at Indiana University. White, who was not involved in the study, has studied methane cycling for over 30 years, and says it elegantly addressed a hunch that researchers have had—but haven’t been able to nail down—that methanotroph activity occurs in tree bark. He calls the work “profoundly important.
Wetlands contribute more methane to the atmosphere than any other natural source. But without methanotrophs,. These microbes turn methane into carbon dioxide similar to the way combustion does. The process is, almost literally, a slow burn. But it prevents a majority of wetland methane from reaching the sky, making soil a sourceJeffrey wanted more clarity. A few years ago, his attention turned to the paperbarks. “It's such a unique tree with amazing layers of bark,” Jeffrey says.
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