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DOI	10.1016/j.quascirev.2020.106509
	Isotopic ecology and extirpation chronology of the extinct Lesser Antillean native rodent Antillomys rayi Brace et al. (2015)
	Goedert J.; Cochard D.; Lorvelec O.; Oberlin C.; Cuzange M.-T.; Royer A.; Lenoble A.
发表日期	2020
ISSN	0277-3791
卷号	245
英文摘要	The Lesser Antilles is a string of islands stretching from Grenada in the south to Sombrero in the north, which was once home to at least 20 insular populations of native rodents scattered across the different islands. Despite their relative ubiquity on the archipelago, these now extinct rodents remain poorly understood. In Guadeloupe (Basse-Terre and Grande-Terre), Marie-Galante, Barbuda and Antigua, fossil specimens of a large Lesser Antillean native rodent have recently been described as a distinct species, Antillomys rayi Brace et al. 2015. In order to shed new light on the processes leading to the extinction of this species, we use stable carbon and oxygen isotopes to better constrain its ecology, along with a series of radiocarbon dates to narrow its last-occurrence date in Guadeloupe and Marie-Galante. First, we built a reference collection of present-day isotopic data based on carbon and oxygen isotopes from black rats captured in different natural environmental contexts of Guadeloupe. Here, we show A. rayi to have occupied multiple distinct environments ranging from semi-deciduous dry forest to seasonal evergreen or mountain forests. New direct radiocarbon dates obtained on fossil material considerably bring forward the last occurrence of A. rayi in Guadeloupe and Marie-Galante, making it roughly coincident with European contact. However, our new calibrated age intervals place the last occurrence of A. rayi no later than the 16th century AD. Taken together, our results suggest that A. rayi became exceedingly rare, if not extirpated, in Guadeloupe and Marie-Galante shortly after European contact. While the overexploitation of A. rayi by Amerindian populations and the deforestation by European colonists could have impacted A. rayi populations, the consequences (biological competition, disease) of the introduction of black rat most likely explains the early decline of A. rayi and its ultimate extirpation from the islands of Guadeloupe. © 2020 Elsevier Ltd
英文关键词	Holocene; Lesser antilles; Radiocarbon; Rodent; Stable isotope
语种	英语
scopus关键词	Carbon; Deforestation; Ecology; Mammals; Oxygen; Population statistics; Carbon and oxygen isotopes; Environmental contexts; Insular population; Lesser Antilles; Mountain forests; Overexploitation; Radiocarbon dates; Reference collections; Isotopes; archipelago; chronology; deforestation; extinction; forest ecosystem; fossil record; morphology; native species; radiocarbon dating; rodent; type specimen; Antigua; Antigua and Barbuda; Barbuda; Guadeloupe; Leeward Islands [Lesser Antilles]; Rattus rattus; Rodentia
来源期刊	Quaternary Science Reviews
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/151342
作者单位	UMR CNRS 5199, PACEA, Université de Bordeaux, Bâtiment B2 Allée Geoffroy Saint Hilaire CS 50023Pessac Cedex 33615, France; ESE, Ecology and Ecosystems Health, INRAE, Agrocampus Ouest, Rennes, 35042, France; UMR CNRS 5138, ARAR, Université de Lyon, Université Claude Bernard Lyon 1, Bâtiment Carbone 14, 40 bd Niels BohrVilleurbanne Cedex 69622, France; Biogéosciences, UMR 6282 CNRS, Université Bourgogne Franche-Comté, 6 Boulevard Gabriel, Dijon, 21000, France
推荐引用方式 GB/T 7714	Goedert J.,Cochard D.,Lorvelec O.,et al. Isotopic ecology and extirpation chronology of the extinct Lesser Antillean native rodent Antillomys rayi Brace et al. (2015)[J],2020,245.
APA	Goedert J..,Cochard D..,Lorvelec O..,Oberlin C..,Cuzange M.-T..,...&Lenoble A..(2020).Isotopic ecology and extirpation chronology of the extinct Lesser Antillean native rodent Antillomys rayi Brace et al. (2015).Quaternary Science Reviews,245.
MLA	Goedert J.,et al."Isotopic ecology and extirpation chronology of the extinct Lesser Antillean native rodent Antillomys rayi Brace et al. (2015)".Quaternary Science Reviews 245(2020).