气候变化领域集成服务门户(CCPortal): Palaeoecology and palaeoclimatic context of Romanian Carpathian MIS 3 cave bears using stable isotopes (δ13C and δ18O)

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DOI	10.1016/j.palaeo.2019.109288
	Palaeoecology and palaeoclimatic context of Romanian Carpathian MIS 3 cave bears using stable isotopes (δ13C and δ18O)
	Robu M.; Wynn J.; Puşcaş C.M.; Meleg I.N.; Martin J.E.; Constantin S.
发表日期	2019
ISSN	0031-0182
卷号	534
英文摘要	Millimeter-scale growth rings in canine dentine of MIS 3 cave bears have been interpreted as annual growth bands produced, in part, by seasonal variation in growth rate. We present new intra-tooth stable carbon (δ13C) and oxygen (δ18O) isotope profiles in dentine hydroxylapatite of early forming permanent teeth, from three famous Late Pleistocene cave bear sites from Romanian Carpathians. We measured δ13C and δ18O of the CO3 fraction of dentine hydroxylapatite from samples covering a profile across the root, representing a general line from juvenile period to adulthood. Carbon isotopes measured in dentine samples – from the first to the last to be deposited – of the same individual, record an increase in δ13C values throughout immature life of bears as has been shown previously, with lower precision, using age categories. For the first time, based on δ13C data analysis, the weaning process in cave bears was identified. The δ18O values show substantial variations related, most probably, to seasonal growth of the dentine. Finally, the CO3 of dentine apatite extracted from cave bear canines proves to be reliable for geochemical analyses, reflecting physiology, behavior and palaeoclimatic conditions. © 2019 Elsevier B.V.
英文关键词	Dentine; Geochemistry; Intra-tooth variation; Serial sampling; Ursus spelaeus
语种	英语
scopus关键词	bear; climate conditions; dentition; geochemistry; growth rate; marine isotope stage; paleoclimate; paleoecology; Pleistocene; sampling; seasonal variation; stable isotope; Ursus spelaeus
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/150813
作者单位	“Emil Racoviţă” Institute of Speleology, Romanian Academy, Calea 13 Septembrie 13, Bucharest, 050711, Romania; Division of Earth Sciences, National Science Foundation, Alexandria, VA, United States; Terra Analitic, Bulevardul Tudor Vladimirescu 32, Alba Iulia, 510095, Romania; School of Geosciences, University of South Florida, 4202 East Fowler Avenue, NES107, Tampa, FL 33620, United States; Université de Lyon, ENS de Lyon, Université Lyon 1, CNRS, UMR 5276 Laboratoire de Géologie de Lyon: Terre, Planète, Environnement, Lyon, F-69342, France; “Emil Racoviţă” Institute of Speleology, Romanian Academy, Center for Geochronology & Paleoclimate, Frumoasă 31, Bucharest, 010986, Romania; Centro Nacional de Investigación sobre la Evolucion Humana, CENIEH, Passeo Sierra de Atapuerca 3, Burgos, 09002, Spain
推荐引用方式 GB/T 7714	Robu M.,Wynn J.,Puşcaş C.M.,et al. Palaeoecology and palaeoclimatic context of Romanian Carpathian MIS 3 cave bears using stable isotopes (δ13C and δ18O)[J],2019,534.
APA	Robu M.,Wynn J.,Puşcaş C.M.,Meleg I.N.,Martin J.E.,&Constantin S..(2019).Palaeoecology and palaeoclimatic context of Romanian Carpathian MIS 3 cave bears using stable isotopes (δ13C and δ18O).Palaeogeography, Palaeoclimatology, Palaeoecology,534.
MLA	Robu M.,et al."Palaeoecology and palaeoclimatic context of Romanian Carpathian MIS 3 cave bears using stable isotopes (δ13C and δ18O)".Palaeogeography, Palaeoclimatology, Palaeoecology 534(2019).