0000000000666557
AUTHOR
Christiane Denys
New palaeoecological approaches to interpret climatic fluctuations in Holocene sites of the Pampean region of Argentina
The apparently regular and favourable climate that characterizes the Holocene as an interglacial period shows, however, important climatic instability well documented in the Northern Hemisphere. These fluctuations from colder to warmer or wetter to drier affected both biodiversity and human societies in the last 12,000 years, although the impact in Southern America is still poorly known. We are here investigating the biodiversity of small mammal faunas, more sensitive to climatic changes than large mammals, combining taphonomic and palaeoecological data in the Argentine Pampas to better understand the global nature and effect of these Holocene climatic fluctuations. This paper is pioneering…
Looking inside rodent teeth: δ18O analysis used to reconstruct the environment of MIS 3 in Northeastern Iberia
International audience; Small mammals (insectivores, bats and rodents) are one of the most useful tools to reconstruct Quaternary environment. Recent studies have demonstrated the relation between the stable oxygen isotopes (mainly δ18O) from biogenetic phosphates from rodent teeth with the δ18O from meteoric water; that at the same time can be potentially related with palaeotemperatures. This work explores the palaeoenvironment reconstructions based on the δ18O composition of phosphates from enamel of rodent teeth (mainly Murinae and Arvicolinae) to approach to the Marine Isotope Stage 3 (ca. 60-30 ka) in Northeastern Iberia. Fourteen new δ18O analyses from current samples are presented, c…