气候变化领域集成服务门户(CCPortal): Dramatic change in the diet of a late Pleistocene Elasmotherium population during its last days of life: Implications for its catastrophic mortality in the Saratov region of Russia

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DOI	10.1016/j.palaeo.2020.109898
	Dramatic change in the diet of a late Pleistocene Elasmotherium population during its last days of life: Implications for its catastrophic mortality in the Saratov region of Russia
	Rivals F.; Prilepskaya N.E.; Belyaev R.I.; Pervushov E.M.
发表日期	2020
ISSN	0031-0182
卷号	556
英文摘要	The late Pleistocene site of Irgiz 1 (Saratov Region, Russia) has yielded an accumulation of giant rhinoceros (Elasmotherium sibiricum) within the deposits of an oxbow lake. Irgiz 1 is one of the few sites in the world with a significant amount of elasmothere individuals of different age groups. Tooth mesowear and microwear are used to characterize the dietary traits of the giant rhinoceros on two temporal scales, the annual average diet and the diet at the time of death, respectively. Tooth mesowear, analyzed on 20 specimens, suggests a highly abrasive diet similar to that of extant grazers (similar to the extant white rhinoceros). Tooth microwear analyzed on 16 specimens, conversely, indicates that E. sibiricum was a browser (feeding on leaves from shrubs and trees) at the time of death. The strong discrepancy between the results from the two dietary proxies and the very low variability of the microwear signal suggest that these animals may have died in an event of short duration. The elasmotheres from the area around Irgiz 1 were grazers, but a catastrophic event, perhaps related to the significant accumulation of snow and/or ice coating (‘dzud’), limited the availability of grass and forced them to shift toward shrub/tree foliage that was still accessible. The combination of the two proxies, mesowear and microwear, allows the reconstruction of the dietary traits of E. sibiricum, but also to propose a hypothesis for death. This first study of tooth meso- and microwear on elasmotheres provided unique data which allows us to broaden our knowledge about the diet of these animals. The findings indicate that the Irgiz 1 population of elasmotheres died in a single catastrophic event and that the fossil assemblage is not time-averaged. © 2020 Elsevier B.V.
英文关键词	Irgiz 1; Paleodiet; Rhinocerotidae; Tooth mesowear; Tooth microwear
语种	英语
scopus关键词	catastrophic event; diet; fossil assemblage; Pleistocene; reconstruction; tooth; ungulate; Michigan; Oxbow Lake; Russian Federation; Saratov; United States; Animalia; Ceratotherium simum; Rhinoceros; Rhinocerotidae
来源期刊	Palaeogeography, Palaeoclimatology, Palaeoecology
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/150375
作者单位	ICREA, Institució Catalana de Recerca i Estudis Avançats, Pg. Lluís Companys 23, Barcelona, 08010, Spain; Institut Català de Paleoecologia Humana i Evolució Social (IPHES), Zona Educacional 4, Campus Sescelades URV (Edifici W3), Tarragona, 43007, Spain; Universitat Rovira i Virgili (URV), Departament d'Història i Història de l'Art, Avinguda de Catalunya 35, Tarragona, 43002, Spain; A.N. Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences, 34 Vavilova Street, Moscow, 119334, Russian Federation; Department of Historical Geology and Paleontology, Geological Faculty, Saratov State University, 83 Astrakhanskaya Str, Saratov, 410012, Russian Federation
推荐引用方式 GB/T 7714	Rivals F.,Prilepskaya N.E.,Belyaev R.I.,et al. Dramatic change in the diet of a late Pleistocene Elasmotherium population during its last days of life: Implications for its catastrophic mortality in the Saratov region of Russia[J],2020,556.
APA	Rivals F.,Prilepskaya N.E.,Belyaev R.I.,&Pervushov E.M..(2020).Dramatic change in the diet of a late Pleistocene Elasmotherium population during its last days of life: Implications for its catastrophic mortality in the Saratov region of Russia.Palaeogeography, Palaeoclimatology, Palaeoecology,556.
MLA	Rivals F.,et al."Dramatic change in the diet of a late Pleistocene Elasmotherium population during its last days of life: Implications for its catastrophic mortality in the Saratov region of Russia".Palaeogeography, Palaeoclimatology, Palaeoecology 556(2020).