Suzanne B. Hodgkins et al. Tropical peatland carbon storage linked to global latitudinal trends in peat recalcitrance. Nature Communications. volume 9, A3640 (2018)
Peatlands represent large terrestrial carbon banks. Given that most peat accumulates in boreal regions, where low temperatures and water saturation preserve organic matter, the existence of peat in (sub)tropical regions remains enigmatic. Here we examined peat and plant chemistry across a latitudinal transect from the Arctic to the tropics. Near-surface low-latitude peat has lower carbohydrate and greater aromatic content than near-surface high-latitude peat, creating a reduced oxidation state and resulting recalcitrance. This recalcitrance allows peat to persist in the (sub)tropics despite warm temperatures. Because we observed similar declines in carbohydrate content with depth in high-latitude peat, our data explain recent field-scale deep peat warming experiments in which catotelm (deeper) peat remained stable despite temperature increases up to 9 °C. We suggest that high-latitude deep peat reservoirs may be stabilized in the face of climate change by their ultimately lower carbohydrate and higher aromatic composition, similar to tropical peats.
See WUWT for more discussion of this paper.
“Dennis Prager writes in Townhall that judging Brett Kavanaugh on the basis of an unsubstantiated accusation about his behavior while in high school is indicative of the irrationality and lack of moral compass in our society:” click here
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“Policy action is required to mitigate and adapt to human-caused climate change, but current efforts to develop a global climate policy cannot fly. What the world’s leaders have been able to agree on will not prevent the steady increase in greenhouse gases in the atmosphere and the risks of climate disruption that will result.” click here
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I’m not sure who he is talking about. It’s amazing hollywood actors actually make statements like this. (Or perhaps, Mr. Ford does comedy too.)
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