Mackay, Helen; Whelton, Helen; Reuther, Joshua; Potter, Ben; Edwards, Mary; Henderson, Andrew; Bull, Ian; Baldwin, Elinor; Clarke, Charlotte; Mayfield, Roseanna; Davies, Kimberley L; Van Hardenbroek, Maarten; Bigelow, Nancy H: Lake biomarkers (210Pb) of sediment core CHIS19 [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.993065 (dataset in review)
Abstract:
This dataset includes faecal lipid biomarker data from a lake sediment core from central Alaska and modern faecal biomarker reference data from Alaskan herbivores and omnivores/carnivores. 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. Lead-210 (210Pb) measurements were completed by Flett Research and radiocarbon (14C) measurements were completed by the Center for Applied Isotope Studies at the University of Georgia. We extracted lipid biomarkers from 15 core subsamples and 50 modern faecal reference samples and, following saponification and column chromatography, faecal biomarkers were identified and quantified by GC-MS at the University of Bristol.
Supplement to:
Mackay, Helen; Whelton, Helen; Reuther, Joshua; Potter, Ben; Edwards, Mary; Henderson, Andrew; Bull, Ian; Baldwin, Elinor; Clarke, Charlotte; Mayfield, Roseanna; Davies, Kimberley L; Van Hardenbroek, Maarten; Bigelow, Nancy H (in review): Testing the limits of lacustrine faecal lipid biomarkers as tools to document human and herbivore presence in Alaskan and Eastern Beringian landscapes. Quaternary Science Reviews
Funding:
European Research Council (ERC), grant/award no. FP/2007-2013: National Environmental Isotope Facility
Natural Environment Research Council (NERC), grant/award no. NEIF #2341.0321: Faecal steroid analysis of Chisholm Lake Alaska
Coverage:
Latitude: 64.302290 * Longitude: -146.686230
Date/Time Start: 2019-09-04T00:00:00 * Date/Time End: 2019-09-04T00:00:00
Minimum DEPTH, sediment/rock: 0.005 m * Maximum DEPTH, sediment/rock: 0.030 m
Event(s):
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Sample code/label | Sample label | Mackay, Helen | |||
| 2 | DEPTH, sediment/rock | Depth sed | m | Mackay, Helen | Geocode | |
| 3 | Density, dry bulk | DBD | g/cm3 | Mackay, Helen | ||
| 4 | Age | Age | a AD/CE | Mackay, Helen | ||
| 5 | AGE | Age | ka BP | Mackay, Helen | Geocode | |
| 6 | Accumulation rate, Cholesterol | Acc rate Cholesterol | ng/cm2/a | Mackay, Helen | ||
| 7 | Accumulation rate, 24-Ethylcholest-5-en-3beta-ol | Acc rate b-Sitosterol | ng/cm2/a | Mackay, Helen | ||
| 8 | Accumulation rate, Stigmasterol | Acc rate Stigmasterol | ng/cm2/a | Mackay, Helen | ||
| 9 | Accumulation rate, 5alpha-Cholestan-3beta-ol | Acc rate Cholestanol | ng/cm2/a | Mackay, Helen | ||
| 10 | Accumulation rate, 5alpha-stigmastan-3beta-ol | Acc rate stigmastanol | ng/cm2/a | Mackay, Helen | ||
| 11 | Accumulation rate, 5beta-cholestan-3beta-ol | Acc rate coprostanol | ng/cm2/a | Mackay, Helen | ||
| 12 | Accumulation rate, Epi-Coprostanol | Acc rate Epi-Coprostanol | ng/cm2/a | Mackay, Helen | ||
| 13 | Accumulation rate, 5beta-Stigmastanol | Acc rate 5b-Stigmastanol | ng/cm2/a | Mackay, Helen | ||
| 14 | Accumulation rate, Epi-5beta-Stigmastanol | Acc rate Epi-5b-Stigmastanol | ng/cm2/a | Mackay, Helen | ||
| 15 | Accumulation rate, lithocholic acid | Acc rate LCA | ng/cm2/a | Mackay, Helen | ||
| 16 | Accumulation rate, deoxycholic acid | Acc rate DCA | ng/cm2/a | Mackay, Helen | ||
| 17 | Accumulation rate, ursodeoxycholic acid | Acc rate UDCA | ng/cm2/a | Mackay, Helen | ||
| 18 | Accumulation rate, hyodeoxycholic acid | Acc rate HDCA | ng/cm2/a | Mackay, Helen | ||
| 19 | Cholesterol, per unit sediment dry mass | Cholesterol/sed dm | µg/g | Mackay, Helen | ||
| 20 | 24-Ethylcholest-5-en-3beta-ol, per unit sediment dry mass | b-Sitosterol/sed dm | µg/g | Mackay, Helen | ||
| 21 | Stigmasterol, per unit sediment dry mass | Stigmasterol/sed dm | µg/g | Mackay, Helen | ||
| 22 | 5alpha-Cholestanol, per unit sediment dry mass | 5a-Cholestanoll/sed dm | µg/g | Mackay, Helen | ||
| 23 | 5alpha-Stigmastanol, per unit sediment dry mass | 5a-Stigmastanol/sed dm | µg/g | Mackay, Helen | ||
| 24 | Coprostanol, per unit sediment dry mass | Coprostanol/sed dm | µg/g | Mackay, Helen | ||
| 25 | Epi-Coprostanol, per unit sediment dry mass | Epi-Coprostanol/sed dm | µg/g | Mackay, Helen | ||
| 26 | 5beta-Stigmastanol, per unit sediment dry mass | 5b-Stigmastanol/sed dm | µg/g | Mackay, Helen | ||
| 27 | Epi-5beta-Stigmastanol, per unit sediment dry mass | Epi-5b-Stigmastanol/sed dm | µg/g | Mackay, Helen | ||
| 28 | Lithocholic acid, per unit sediment dry mass | LCA/sed dm | µg/g | Mackay, Helen | ||
| 29 | Deoxycholic acid, per unit sediment dry mass | DCA/sed dm | µg/g | Mackay, Helen | ||
| 30 | Ursodeoxycholic acid, per unit sediment dry mass | UDCA/sed dm | µg/g | Mackay, Helen | ||
| 31 | Hyodeoxycholic acid, per unit sediment dry mass | HDCA/sed dm | µg/g | Mackay, Helen |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
174 data points