Bulk density, grain size, carbon content and isotopes, and nitrogen content of floodplain sediment along the Koyukuk River, Alaska collected in Summer 2018.

• Main Authors: Madison Douglas, Michael Lamb, Gen Li, Joel Rowland, A. Joshua West, Usha Lingappa, Preston Kemeny, Anastasia Piliouras, Jon Schwenk, Austin Chadwick, Woodward Fischer
• Format: Dataset
• Language: unknown
• Published: ESS-DIVE: Deep Insight for Earth Science Data 2022
• Subjects: EARTH SCIENCE > LAND SURFACE > SOILS; EARTH SCIENCE > LAND SURFACE > GEOMORPHIC LANDFORMS/PROCESSES; EARTH SCIENCE > SOLID EARTH > GEOCHEMISTRY; EARTH SCIENCE > CRYOSPHERE > FROZEN GROUND; EARTH SCIENCE > LAND SURFACE > SOILS > SOIL TEXTURE; EARTH SCIENCE > LAND SURFACE > GEOMORPHIC LANDFORMS/PROCESSES > FLUVIAL LANDFORMS > FLOOD PLAIN; EARTH SCIENCE > LAND SURFACE > SOILS > SOIL BULK DENSITY; EARTH SCIENCE > LAND SURFACE > SOILS > SOIL CHEMISTRY; EARTH SCIENCE > LAND SURFACE > SOILS > NITROGEN; EARTH SCIENCE > LAND SURFACE > SOILS > ORGANIC MATTER; EARTH SCIENCE > LAND SURFACE > SOILS > CARBON; Huslia; Rowland; permafrost; Alaska
• Online Access: https://search.dataone.org/view/ess-dive-4078fe77736a798-20230407T145201313166

The dataset is comprised of grain size, bulk density, carbon and nitrogen content, stable carbon isotopes, and radiocarbon content of soils sampled on the floodplain of the Koyukuk River near Huslia, AK. This dataset was collected to characterize sediment properties and floodplain organic carbon stocks in the discontinuous permafrost floodplain of the Koyukuk River. The data help quantify the flux and storage of sediment and carbon between the Koyukuk River and the surrounding floodplain as the river migrates laterally. The samples were collected in June 27 - July 9, 2018. The soil samples come from a total of 24 locations and were sampled in the upper 490 cm of the river cutbanks, point bars, and floodplain. Samples were analyzed for bulk density, full particle size distribution, nitrogen content and carbon content and isotopes, though not all samples were included in each analysis. An additional 10 samples of floodplain woody debris were measured for radiocarbon content. Data, detailed methods, analyses, and interpretations were previously published at: Douglas, M. M., Lingappa, U. F., Lamb, M. P., Rowland, J. C., West, A. J., Li, G., et al. (2021). Impact of river channel lateral migration on microbial communities across a discontinuous permafrost floodplain. Applied and Environmental Microbiology, 87(20), AEM.01339-21. https://doi.org/10.1128/AEM.01339-21 Douglas, M. M., Li, G. K., Fischer, W. W., Rowland, J. C., Kemeny, P. C., West, A. J., et al. (2022). Organic carbon burial by river meandering partially offsets bank erosion carbon fluxes in a discontinuous permafrost floodplain. Earth Surface Dynamics, 10(3), 421–435. https://doi.org/10.5194/esurf-10-421-2022 The dataset is comprised of a total of three separate data files based on the sample type and analysis, including a file that lists the sample locations, permafrost presence, and geomorphic landform.