Fecal biomarkers from Chisholm Lake, Alaska (sediment core CHIS19; 210Pb chronology)

DOI

This dataset includes faecal lipid biomarker data from a lake sediment core from central Alaska. The purpose of this study was to assess the sensitivity and validity of lacustrine faecal steroid reconstructions of human and animal presence within the landscape by combining analyses of modern faecal samples and a sediment archive from Chisholm Lake, Alaska, where historical and archaeological population changes are well documented. To achieve this, we analysed faecal steroids (stanols and bile acids), which are biomolecules that are deposited in the landscape from faeces of higher vertebrates. The lake sediment core was recovered from Chisholm Lake in the Tanana Valley of interior Alaska (64.302267 N, 146.687331 W) in September 2019 using a Bolivia corer. The age-depth model was determined using lead-210 (210Pb). We extracted lipid biomarkers from 6 core subsamples and, following saponification and column chromatography, faecal biomarkers were identified and quantified by GC-MS at the University of Bristol. Stanol and bile acid data are reported as flux (accounting for the bulk density of the sediment samples and age-depth model inferred changes in sediment accumulation rates) and dry matter concentrations.

Identifier
DOI https://doi.pangaea.de/10.1594/PANGAEA.993065
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.993065
Provenance
Creator Mackay, Helen; Whelton, Helen; Reuther, Joshua; Potter, Ben; Edwards, Mary; Henderson, Andrew ORCID logo; Bull, Ian; Baldwin, Elinor; Clarke, Charlotte ORCID logo; Mayfield, Roseanna; Davies, Kimberley L; Van Hardenbroek, Maarten; Bigelow, Nancy H ORCID logo
Publisher PANGAEA
Publication Year 2026
Funding Reference European Research Council https://doi.org/10.13039/501100000781 Crossref Funder ID 340923 https://www.isotopesuk.org/ National Environmental Isotope Facility; European Research Council https://doi.org/10.13039/501100000781 Crossref Funder ID FP/2007-2013 https://www.isotopesuk.org/ National Environmental Isotope Facility; National Science Foundation https://doi.org/10.13039/100000001 Crossref Funder ID 2037146 EAGER SUPPLEMENT; Natural Environment Research Council https://doi.org/10.13039/501100000270 Crossref Funder ID NEIF #2341.0321 Faecal steroid analysis of Chisholm Lake Alaska; Royal Society https://doi.org/10.13039/501100000288 Crossref Funder ID NE/V003917/1 Royal Society Tata University Research
Rights Creative Commons Attribution 4.0 International; Data access is restricted (moratorium, sensitive data, license constraints); https://creativecommons.org/licenses/by/4.0/
OpenAccess false
Representation
Resource Type Dataset
Format text/tab-separated-values
Size 174 data points
Discipline Earth System Research
Spatial Coverage (-146.686 LON, 64.302 LAT)