气候变化领域集成服务门户(CCPortal): Comparative isotope ecology of western Amazonian rainforest mammals

CCPortal

DOI	10.1073/pnas.2007440117
	Comparative isotope ecology of western Amazonian rainforest mammals
	Tejada J.V.; Flynn J.J.; Antoine P.-O.; Pacheco V.; Salas-Gismondi R.; Cerling T.E.
发表日期	2020
ISSN	0027-8424
起始页码	26263
结束页码	26272
卷号	117 期号:42
英文摘要	Closed-canopy rainforests are important for climate (influencing atmospheric circulation, albedo, carbon storage, etc.) and ecology (harboring the highest biodiversity of continental regions). Of all rainforests, Amazonia is the world's most diverse, including the highest mammalian species richness. However, little is known about niche structure, ecological roles, and food resource partitioning of Amazonian mammalian communities over time. Through analyses of δ13Cbioapatite, δ13Chair, and δ15Nhair, we isotopically characterized aspects of feeding ecology in a modern western Amazonian mammalian community in Peru, serving as a baseline for understanding the evolution of Neotropical rainforest ecosystems. By comparing these results with data from equatorial Africa, we evaluated the potential influences of distinct phylogenetic and biogeographic histories on the isotopic niches occupied by mammals in analogous tropical ecosystems. Our results indicate that, despite their geographical and taxonomic differences, median δ13Cdiet values from closed-canopy rainforests in Amazonia (-27.4‰) and equatorial Africa (-26.9‰) are not significantly different, and that the median δ13Cdiet expected for mammalian herbivores in any closed-canopy rainforest is -27.2‰. Amazonian mammals seem to exploit a narrower spectrum of dietary resources than equatorial African mammals, however, as depicted by the absence of highly negative δ13Cdiet values previously proposed as indicative of rainforests (<-31‰). Finally, results of keratin and bioapatite δ13C indicate that the predictive power of trophic relationships, and traditional dietary ecological classifications in bioapatite-protein isotopic offset expectations, must be reconsidered. © 2020 National Academy of Sciences. All rights reserved.
英文关键词	Closed canopy rainforests; Isotope ecology; Mammals; Stable isotopes; Western Amazonia
语种	英语
scopus关键词	carbon 13; keratin; Article; ecology; isotope analysis; mammal; Neotropics; nonhuman; Peru; phylogeny; population abundance; priority journal; rain forest
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/160759
作者单位	Tejada, J.V., Department of Earth and Environmental Sciences, Lamont-Doherty Earth Observatory, Columbia University, New York, NY 10027, United States, Division of Paleontology, American Museum of Natural History, New York, NY 10024, United States, Museo de Historia Natural, Universidad Nacional Mayor de San Marcos, Lima, 15072, Peru; Flynn, J.J., Department of Earth and Environmental Sciences, Lamont-Doherty Earth Observatory, Columbia University, New York, NY 10027, United States, Division of Paleontology, American Museum of Natural History, New York, NY 10024, United States; Antoine, P.-O., Institut des Sciences de l'Évolution, UMR 5554, Université de Montpellier, CNRS, Institut de Recherche Pour le Développement, Ecole Pratique des Hautes Etudes, Montpellier, 34095, France; Pacheco, V., Museo de Historia Natural, Universidad Nacional Mayor de San Marcos, Lima, 15072, Peru; Salas-Gismondi, R., Division of Paleontology, American Museum of Natural History, New York, NY 10024, United States, Museo de...
推荐引用方式 GB/T 7714	Tejada J.V.,Flynn J.J.,Antoine P.-O.,et al. Comparative isotope ecology of western Amazonian rainforest mammals[J],2020,117(42).
APA	Tejada J.V.,Flynn J.J.,Antoine P.-O.,Pacheco V.,Salas-Gismondi R.,&Cerling T.E..(2020).Comparative isotope ecology of western Amazonian rainforest mammals.Proceedings of the National Academy of Sciences of the United States of America,117(42).
MLA	Tejada J.V.,et al."Comparative isotope ecology of western Amazonian rainforest mammals".Proceedings of the National Academy of Sciences of the United States of America 117.42(2020).