δ13C values of wood and charcoal reveal broad isotopic ranges at the base of the food web

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The aim of this study is to investigate the range, the degree of variability and a possible time or species dependence of wood and charcoal δ13C values. To achieve this, we used d13C and 14C determinations of archaeological samples from a c. 300 ha area, spanning 7000 years and covering several different species. The d13C values of the wood and charcoal range from almost -33 ‰ to about -22 ‰. We found no time-dependence of wood and charcoal d13C values, neither in general nor within one species. The d13C ranges of different species are different but overlap to some degree. The wood d13C values can be used as an example of the possible range of plant d13C values, which otherwise are not available. They imply that a high degree of variability can be expected at the base of the food chain. This is relevant for palaeodietary studies which rely on the measurement of baseline isotope values. Furthermore, this study suggests that we should measure a large number of possible plant food items, if necessary modern samples, to evaluate the possible baseline d13C ranges for plants.
OriginalsprogEngelsk
TidsskriftRadiocarbon: An International Journal of Cosmogenic Isotope Research
Vol/bind61
Nummer6
Sider (fra-til)2003-2017
Antal sider15
ISSN0033-8222
DOI
StatusUdgivet - dec. 2019
BegivenhedThe 23rd International Radiocarbon Conference - Trondheim, Norge
Varighed: 17 jun. 201822 jun. 2018
Konferencens nummer: 23

Konference

KonferenceThe 23rd International Radiocarbon Conference
Nummer23
LokationTrondheim
LandNorge
Periode17/06/201822/06/2018

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