Preservation of stable isotopic composition in charred grains: Implications for paleoenvironmental and archeological research

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F86652079%3A_____%2F25%3A00619049" target="_blank" >RIV/86652079:_____/25:00619049 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68081758:_____/25:00619049 RIV/62156489:43210/25:43926908

Výsledek na webu

<a href="https://onlinelibrary.wiley.com/doi/10.1002/jqs.3707" target="_blank" >https://onlinelibrary.wiley.com/doi/10.1002/jqs.3707</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/jqs.3707" target="_blank" >10.1002/jqs.3707</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Preservation of stable isotopic composition in charred grains: Implications for paleoenvironmental and archeological research

Popis výsledku v původním jazyce

The charring process can preserve archaeobotanical remains, providing valuable insights into past climates, agricultural practices, and plant growth conditions. However, the impact of charring on stable isotopes, especially at temperatures above 300 degrees C, remains poorly understood. To investigate this, wheat (einkorn, emmer) and millet grains were experimentally charred at 300 degrees C, 450 degrees C, and 550 degrees C for 15 min to 48 h under aerobic and anaerobic conditions. Consequently, the stable isotopic ratios of carbon (C-13/C-12, delta C-13), nitrogen (N-15/N-14, delta N-15), and oxygen (O-18/O-16, delta O-18) were determined in fully charred grains with a blackened pericarp, visually comparable to archeological remains. Our results indicate that delta C-13 values are well preserved in charred grains, showing minimal shifts (<0.55 parts per thousand for wheat and <0.2 parts per thousand for millet), while delta N-15 values retained species-specific differences, with moderate variations (<1.31 parts per thousand for wheat and <0.68 parts per thousand for millet) influenced by charring conditions. In contrast, delta O-18 values showed high variability in experimentally charred grains, limiting their reliability for interpretative use. These findings underscore the potential of carbon and, to a lesser extent, nitrogen isotopes in charred grains, for reconstructing ancient growth conditions and improving the understanding of formation processes in archeological research.

Název v anglickém jazyce

Preservation of stable isotopic composition in charred grains: Implications for paleoenvironmental and archeological research

Popis výsledku anglicky

The charring process can preserve archaeobotanical remains, providing valuable insights into past climates, agricultural practices, and plant growth conditions. However, the impact of charring on stable isotopes, especially at temperatures above 300 degrees C, remains poorly understood. To investigate this, wheat (einkorn, emmer) and millet grains were experimentally charred at 300 degrees C, 450 degrees C, and 550 degrees C for 15 min to 48 h under aerobic and anaerobic conditions. Consequently, the stable isotopic ratios of carbon (C-13/C-12, delta C-13), nitrogen (N-15/N-14, delta N-15), and oxygen (O-18/O-16, delta O-18) were determined in fully charred grains with a blackened pericarp, visually comparable to archeological remains. Our results indicate that delta C-13 values are well preserved in charred grains, showing minimal shifts (<0.55 parts per thousand for wheat and <0.2 parts per thousand for millet), while delta N-15 values retained species-specific differences, with moderate variations (<1.31 parts per thousand for wheat and <0.68 parts per thousand for millet) influenced by charring conditions. In contrast, delta O-18 values showed high variability in experimentally charred grains, limiting their reliability for interpretative use. These findings underscore the potential of carbon and, to a lesser extent, nitrogen isotopes in charred grains, for reconstructing ancient growth conditions and improving the understanding of formation processes in archeological research.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10508 - Physical geography

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Quaternary Science

ISSN

0267-8179

e-ISSN

1099-1417

Svazek periodika

40

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

12

Strana od-do

645-656

Kód UT WoS článku

001458399900001

EID výsledku v databázi Scopus

2-s2.0-105001859482