Organic-Matter Accumulation and Degradation in Holocene Permafrost Deposits Along a Central Alaska Hillslope, 2020-2022 ...

The quantity and preservation of carbon-rich organic matter (OM) underlying permafrost uplands, and the evolution of carbon accumulation with millennial climate change, are large sources of uncertainty in carbon cycle feedbacks on climate change. We investigated permafrost OM accumulation and degrad...

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Bibliographic Details
Main Authors: Marshall, Leah, Kaufman, Darrell, Anderson, R. Scott, McKay, Nicholas, Schuur, Edward
Format: Dataset
Language:English
Published: NSF Arctic Data Center 2023
Subjects:
Permafrost
Organic Matter
Arctic
Alaska
Holocene
Carbon
Amino Acids
Sediment
Soil
BNZ LTER
Climate change
permafrost
Online Access:https://dx.doi.org/10.18739/a2f76683d
https://arcticdata.io/catalog/view/doi:10.18739/A2F76683D
Description
Summary:The quantity and preservation of carbon-rich organic matter (OM) underlying permafrost uplands, and the evolution of carbon accumulation with millennial climate change, are large sources of uncertainty in carbon cycle feedbacks on climate change. We investigated permafrost OM accumulation and degradation over the Holocene using a transect of sediment cores dating back to at least c. 6-8 ka, from a hillslope in the Eight Mile Lake watershed, central Alaska. This dataset collected from four permafrost sediment cores includes a variety of biogeochemical datasets including radiocarbon, carbon, nitrogen, particle size, amino acids (concentrations and D:L), bulk density and water content. ...

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