Abstract
Here we present stable carbon, nitrogen and sulfur isotope ratios of collagen extracted from Rangifer, Equus and Bison bone (n = 128) from different stratigraphic levels at the chronologically well-constrained Middle and Upper Palaeolithic site of Les Cottés, France. Samples were taken from five phases of site use (US08, US06, US04 [upper and lower], and US02; ~ 45.8–35.3 ka cal BP) to explore the dietary and spatial palaeoecology of these ungulate species during MIS 3, and the contemporary climate. Temporal trends in δ15N values of all species broadly align with other climatic indicators at the site and the lowest values in US04 correspond to the Heinrich 4 cooling event, reflecting changes in the composition of soil/plant nitrogen at this time. Rangifer collagen is 13C-enriched compared to the other species throughout, consistent with lichen consumption. However, this isotopic niche partitioning between Rangifer and Equus/Bison is most extensive during US04, indicating plasticity in reindeer feeding behaviour, and potentially overall increased lichen biomass during this cooler/more arid phase. Rangifer δ34S values are consistently lower than Equus and Bison, which could be indicative of their more extensive spatial ranges incorporating greater inland areas. Equus and Bison demonstrate a significant decrease in δ34S values through time, which may be linked to contemporary climatic decline.
Original language | English |
---|---|
Article number | 15722 |
Number of pages | 13 |
Journal | Scientific Reports |
Volume | 13 |
Early online date | 21 Sept 2023 |
DOIs | |
Publication status | Published - 21 Sept 2023 |
Bibliographical note
AcknowledgementsThis research was funded by a Leverhulme Research Project Grant (ref: RPG-2017-410 to K.B.), and the Max Planck Institute for Evolutionary Anthropology. A Philip Leverhulme Prize (ref: PLP-2019-284 to K.B.) provided support to K.B. during the production of this manuscript, and M.S. is funded by the NWO Dutch Research council (VICI award VI.C.191.07). We thank C.-H. Bachelier and Jaques Bachelier for facilitating and supporting research at Les Cottés, and the French Ministry of Culture for allowing and funding research at Les Cottés. Thanks to Sven Steinbrenner and Annabell Reiner (MPI-EVA), and Orsolya Czére (Aberdeen) for laboratory assistance, and to Jovita Fawcett and Eléa Gutierrez (Aberdeen) for proof reading and assistance with images.
Keywords
- Archaeology
- Palaeoecology
- Stable isotope analysis