Figure 1: Comparison of macrocharcoal, BC, char, and soot mass accumulation rates (MARs) with local pollen and molecular compound data during the last glacial-interglacial transition at Linsley Pond, Connecticut, USA. | Scientific Reports

Figure 1: Comparison of macrocharcoal, BC, char, and soot mass accumulation rates (MARs) with local pollen and molecular compound data during the last glacial-interglacial transition at Linsley Pond, Connecticut, USA.

From: Climate and Fuel Controls on North American Paleofires: Smoldering to Flaming in the Late-glacial-Holocene Transition

Figure 1

(A) Calibrated radiocarbon dates with 1δ error bars; (B) macrofossil charcoal18, an indication of local fires; (C–E) BC, char, and soot MARs, respectively; (F) char/soot ratio, an indicator of the relative contribution of smoldering and flaming combustion; (G–I) pollen percentages from Peteet et al.18, proxies for paleoecological variation: (G) Abies balsamea, an indicator of a cool, wet climate; (H) Pinus strobus., an indicator of a relatively dry climate; (I) Quercus spp., an indicator of warm temperatures; and (J) the ratio of the ratio of 1,7-dimethyl phthalate (DMP)/(1,7 + 2,6)-DMP, an indicator of the variation between softwoods and hardwoods. The shaded area indicates the Younger Dryas (YD) interval between the Holocene and the Bolling-Allerod (BA). Note: Charcoal is expressed as number per 50 cc sample and pollen data are expressed as percentages of total pollen. Errors bars show the estimated uncertainty at the 1-δ standard deviation level.

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