The extinct<i> Notiomastodon</i><i> platensis</i> (proboscidea, Gomphoteriidae) inhabited mediterranean ecosystems during the Late Pleistocene in north-central Chile (31°S-36°S)

Simple item page
dc.contributor.authorGonzalez-Guarda, Erwin
dc.contributor.authorSegovia, Ricardo A.
dc.contributor.authorValenzuela, Matias
dc.contributor.authorAsevedo, Lidiane
dc.contributor.authorVillavicencio, Natalia
dc.contributor.authorTornero, Carlos
dc.contributor.authorRamirez-Pedraza, Ivan
dc.contributor.authorOrtega, Sebastian
dc.contributor.authorCapriles, Jose
dc.contributor.authorLabarca, Rafael
dc.contributor.authorLatorre, Claudio
dc.date.accessioned2025-01-20T16:07:49Z
dc.date.available2025-01-20T16:07:49Z
dc.date.issued2024
dc.description.abstractLimited pollen and limnogeological evidence show that central Chile (31 degrees S-36 degrees S) had a more temperate climate during the Late Pleistocene. Questions remain, however, regarding the extent of the mediterranean sclerophyllous forest currently found in this region and its postglacial dynamics. The extinct Notiomastodon platensis was the only proboscidean species that inhabited central Chile and ranged across a broad latitudinal range (31 degrees S-42 degrees S) during the Pleistocene. Although this species was a mixed-feeder, we reconstructed past ecosystems when these animals were alive using stable isotope evidence from dental root collagen (delta C-13 and delta N-15) of N. platensis specimens collected from present-day semi-arid and mediterranean ecosystems in central Chile (31 degrees S-36 degrees S). Compared to modern vegetation isotope baselines, we expected the isotopic value of the Estimated Consumed Diet (ECD) (the probable diet of N. platensis) to be similar to the isotopic signal (low values) from vegetation adapted to temperate rainforests. However, elevated delta N-15(ECD) values indicate a paleo-vegetation more similar to a xerophyte scrub influenced by a semi-arid paleoclimate. delta C-13(ECD) values reflect a wooded/forested environment but adapted to more arid conditions. Although high delta N-15 values could be influenced by other non-climatic factors (e.g., grazing effect), our combined evidence suggests that these gomphotheres roamed through ecosystem very similar to those found today in central Chile. Our results show the need for multiproxy reconstructions of past environmental change in Mediterranean regions where the abundance of entomophilous species can lead to biased pollen reconstructions.
dc.fuente.origenWOS
dc.identifier.doi10.1016/j.quascirev.2024.108957
dc.identifier.eissn1873-457X
dc.identifier.issn0277-3791
dc.identifier.urihttps://doi.org/10.1016/j.quascirev.2024.108957
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/90026
dc.identifier.wosidWOS:001322239100001
dc.language.isoen
dc.revistaQuaternary science reviews
dc.rightsacceso restringido
dc.subjectPleistocene
dc.subjectNotiomastodon platensis
dc.subjectChile central
dc.subjectStable isotopes
dc.titleThe extinct<i> Notiomastodon</i><i> platensis</i> (proboscidea, Gomphoteriidae) inhabited mediterranean ecosystems during the Late Pleistocene in north-central Chile (31°S-36°S)
dc.typeartículo
dc.volumen344
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
Files
Collections
Artículos de revistas