Northern New England Bogs of Maine, Late Holocene Testate Amoebae Water Table Depth Reconstructions Clifford, M.J.; Booth, R.K. Clifford, M.J. Booth, R.K. earth science/paleoclimate/climate reconstructions|paleolimnology (water table depth,testate amoebae assemblage,null,centimeter,null,climate reconstructions|paleolimnology,null,null,N,calibration with modern dataset) earth science/paleoclimate/climate reconstructions|paleolimnology (age,null,null,year Common Era,null,climate reconstructions|paleolimnology,null,null,N,null) earth science/paleoclimate/climate reconstructions|paleolimnology (age,null,null,calendar year before present,null,climate reconstructions|paleolimnology,null,null,N,null) earth science/paleoclimate/climate reconstructions|paleolimnology (water table depth,testate amoebae assemblage,null,centimeter,null,climate reconstructions|paleolimnology,detrended,null,N,detrended to remove millennial-scale variability in the record; which may be unrelated to climate and caused by autogenic factors; such as lateral bog growth; performed using a LOESS curve applied to 1) earth science/paleoclimate/climate reconstructions|paleolimnology (water table depth,testate amoebae assemblage,null,centimeter,null,climate reconstructions|paleolimnology,detrended,null,N,null) earth science/paleoclimate/climate reconstructions|paleolimnology (water table depth,testate amoebae assemblage,null,centimeter,null,climate reconstructions|paleolimnology,null,null,N,null) earth science/paleoclimate/reconstructions (Sidney Bog>LATITUDE 44.39>LONGITUDE -69.78) (Saco Bog>LATITUDE 43.55>LONGITUDE -70.46) Understanding the role of fire in the Earth system, and particularly regional controls on its frequency and severity, is critical to risk assessment. Charcoal records from lake sediment and fire-scar networks from long-lived tree species have improved our understanding of long-term relationships between fire events and climate. This work has primarily focused on historically fire-prone ecosystems and regions. In the northeastern USA, where wildfire has been relatively infrequent in historical times, fire-risk assessments have incorporated little-to-no pre-historical data and little is known about long-term fire-climate relationships. We developed coupled, high-resolution records of moisture variability and fire from three ombrotrophic peatlands in Maine using testate amoebae and analysis of microscopic charcoal. Water-table depth reconstructions among the three sites were generally coherent, with high-magnitude dry and wet events corresponding within the uncertainty of age-depth models. At all sites, there was a significantly higher probability of fire events during high-magnitude droughts. However, although prolonged droughts were widespread and associated with higher probability of fire, the fire events were rarely synchronous among sites, with the exception of ~550 years before present (yr BP) when all three sites experienced both drought and fire. While fire has been relatively uncommon in the northeastern USA during the past century, our records clearly highlight the potential vulnerability of the region to future drought and fire impacts. Results also demonstrate the utility of coupled records of fire and climate in understanding regional fire-climate dynamics. NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Clifford, M.J. Investigator : Booth, R.K. 2017-11-15 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/23088 https://www1.ncdc.noaa.gov/pub/data/paleo/pages2k/NAm2kHydro-2017/data-version-1.0.0/Saco.Clifford.2013.lpd https://www1.ncdc.noaa.gov/pub/data/paleo/pages2k/NAm2kHydro-2017/noaa-templates/data-version-1.0.0/Saco.Clifford.2013.txt https://www1.ncdc.noaa.gov/pub/data/paleo/pages2k/NAm2kHydro-2017/data-version-1.0.0/Sidney.Clifford.2013.lpd https://www1.ncdc.noaa.gov/pub/data/paleo/pages2k/NAm2kHydro-2017/noaa-templates/data-version-1.0.0/Sidney.Clifford.2013.txt https://www1.ncdc.noaa.gov/pub/data/paleo/pages2k/NAm2kHydro-2017/data-version-1.0.0/Saco.Clifford.2013.lpd https://www1.ncdc.noaa.gov/pub/data/paleo/pages2k/NAm2kHydro-2017/noaa-templates/data-version-1.0.0/Saco.Clifford.2013.txt https://www1.ncdc.noaa.gov/pub/data/paleo/pages2k/NAm2kHydro-2017/data-version-1.0.0/Sidney.Clifford.2013.lpd https://www1.ncdc.noaa.gov/pub/data/paleo/pages2k/NAm2kHydro-2017/noaa-templates/data-version-1.0.0/Sidney.Clifford.2013.txt English https://www.ncdc.noaa.gov/paleo/study/23088 https://www1.ncdc.noaa.gov/pub/data/paleo/pages2k/NAm2kHydro-2017/data-version-1.0.0/Saco.Clifford.2013.lpd https://www1.ncdc.noaa.gov/pub/data/paleo/pages2k/NAm2kHydro-2017/noaa-templates/data-version-1.0.0/Saco.Clifford.2013.txt https://www1.ncdc.noaa.gov/pub/data/paleo/pages2k/NAm2kHydro-2017/data-version-1.0.0/Sidney.Clifford.2013.lpd https://www1.ncdc.noaa.gov/pub/data/paleo/pages2k/NAm2kHydro-2017/noaa-templates/data-version-1.0.0/Sidney.Clifford.2013.txt Clifford, M.J. & Booth, R.K.2013Increased probability of fire during late Holocene droughts in northern New EnglandClimatic Change1192510.1073/pnas.252603099 START YEAR: 2905 cal yr BP * END YEAR: -60 cal yr BP -70.46 43.55 -69.78 44.39