15,700 year sediment record of productivity, carbon accumulation and environmental change at Eight Mile Lake, central Alaska; 2020-2023 ...

• Main Authors: Marshall, Leah, Kaufman, Darrell, Bigelow, Nancy, Cohen, Emily, Damon, Brooke, Finney, Bruce, McKay, Nick, Medina, Meriel, Muñoz, Samuel, Schuur, Ted, Żarczyński, Maurycy
• Format: Dataset
• Language: English
• Published: NSF Arctic Data Center 2024
• Subjects: Alaska; Arctic; Organic Matter; Carbon; Holocene; Lake Sediment; Permafrost; Paleolimnology; BNZ LTER; Magnetic susceptibility; permafrost
• Online Access: https://dx.doi.org/10.18739/a2hh6c75c; https://arcticdata.io/catalog/view/doi:10.18739/A2HH6C75C

The role of high latitude lakes in storing and processing terrestrial organic carbon export is not well understood. We analyzed a 2.7-meter (m) -long sedimentary record from Eight Mile Lake that extends back 15,700 years to evaluate connections between productivity, organic carbon accumulation and late Quaternary environmental change in central Alaska. We analyzed macrofossil radiocarbon, alongside physical and biogeochemical properties. This dataset includes data from 12 sediment cores collected across Eight Mile Lake. These cores span time frames of 1000 - 15,700 years. This dataset includes bulk physical data, organic matter abundance, biogenic silica abundance, particle size, geochronological information, magnetic susceptibility data and hyperspectral imagery. ...