Widespread global peatland establishment and persistence over the last 130,000 y

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title = "Widespread global peatland establishment and persistence over the last 130,000 y",
abstract = "Glacial-interglacial variations in CO 2 and methane in polar ice cores have been attributed, in part, to changes in global wetland extent, but the wetland distribution before the Last Glacial Maximum (LGM, 21 ka to 18 ka) remains virtually unknown. We present a study of global peatland extent and carbon (C) stocks through the last glacial cycle (130 ka to present) using a newly compiled database of 1,063 detailed stratigraphic records of peat deposits buried by mineral sediments, as well as a global peatland model. Quantitative agreement between modeling and observations shows extensive peat accumulation before the LGM in northern latitudes (>40 ° N), particularly during warmer periods including the last interglacial (130 ka to 116 ka, MIS 5e) and the interstadial (57 ka to 29 ka, MIS 3). During cooling periods of glacial advance and permafrost formation, the burial of northern peatlands by glaciers and mineral sediments decreased active peatland extent, thickness, and modeled C stocks by 70 to 90{\%} from warmer times. Tropical peatland extent and C stocks show little temporal variation throughout the study period. While the increased burial of northern peats was correlated with cooling periods, the burial of tropical peat was predominately driven by changes in sea level and regional hydrology. Peat burial by mineral sediments represents a mechanism for long-term terrestrial C storage in the Earth system. These results show that northern peatlands accumulate significant C stocks during warmer times, indicating their potential for C sequestration during the warming Anthropocene.",
keywords = "Carbon, Carbon burial, Methane, Peatlands, Quaternary",
author = "Treat, {Claire C.} and Thomas Kleinen and Nils Broothaerts and Dalton, {April S.} and Ren{\'e} Dommaine and Douglas, {Thomas A.} and Drexler, {Judith Z.} and Finkelstein, {Sarah A.} and Guido Grosse and Geoffrey Hope and Jack Hutchings and Jones, {Miriam C.} and Peter Kuhry and Terri Lacourse and Outi L{\"a}hteenoja and Julie Loisel and Bastiaan Notebaert and Payne, {R. J.} and Peteet, {Dorothy M.} and Sannel, {A. Britta K.} and Stelling, {Jonathan M.} and Jens Strauss and Swindles, {Graeme T.} and Julie Talbot and Charles Tarnocai and Gert Verstraeten and Williams, {Christopher J.} and Zhengyu Xia and Zicheng Yu and Minna V{\"a}liranta and Martina H{\"a}ttestrand and Helena Alexanderson and Victor Brovkin",
year = "2019",
doi = "10.1073/pnas.1813305116",
language = "English",
volume = "116",
pages = "4822--4827",
journal = "Proceedings of the National Academy of Sciences",
issn = "1091-6490",
publisher = "National Acad Sciences",
number = "11",