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2020-11-16 13:35:06
2020-11-16 13:35:06
Download scientific diagram | Lignin source diagnostics of terrigenous material in the 31-PC (80 samples) compared with previously studied sediment cores from the Siberian Shelf 4-PC (13), GC-58 (17), and PC-23 (11), as well as coastal ICD, AL permafrost (32), and Lena river particulate OC (25). The size of the 31-PC circles is proportional to the magnitude of the respective lignin flux (0.01 to 6.6 mg year −1 m −2 ). The abundance ratio of syringyl over vanillyl (S/V) indicates contributions of angiosperm compared to gymnosperm plants, and the ratio between cinnamyl and vanillyl (C/V) distinguishes between woody (e.g., stems) and nonwoody (e.g. leaves) plant tissues (24). from publication: Remobilization of dormant carbon from Siberian-Arctic permafrost during three past warming events | Carbon cycle models suggest that past warming events in the Arctic may have caused large-scale permafrost thaw and carbon remobilization, thus affecting atmospheric CO 2 levels. However, observational records are sparse, preventing spatially extensive and time-continuous... | Permafrost, Carbon and Arctic | ResearchGate, the professional network for scientists.
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