globalchange  > 气候变化与战略
DOI: 10.1073/pnas.2007440117
论文题名:
Comparative isotope ecology of western Amazonian rainforest mammals
作者: Tejada J.V.; Flynn J.J.; Antoine P.-O.; Pacheco V.; Salas-Gismondi R.; Cerling T.E.
刊名: Proceedings of the National Academy of Sciences of the United States of America
ISSN: 0027-8424
出版年: 2020
卷: 117, 期:42
起始页码: 26263
结束页码: 26272
语种: 英语
英文关键词: Closed canopy rainforests ; Isotope ecology ; Mammals ; Stable isotopes ; Western Amazonia
Scopus关键词: carbon 13 ; keratin ; Article ; ecology ; isotope analysis ; mammal ; Neotropics ; nonhuman ; Peru ; phylogeny ; population abundance ; priority journal ; rain forest
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.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/163986
Appears in Collections:气候变化与战略

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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 Historia Natural, Universidad Nacional Mayor de San Marcos, Lima, 15072, Peru, BioGeoCiencias Lab, Facultad de Ciencias y Filosofía, Laboratorios de Investigación y Desarrollo (LID), Centro de Investigación Para El Desarrollo Integral y Sostenible (CIDIS), Universidad Peruana Cayetano Heredia, Lima, 15102, Peru; Cerling, T.E., Department of Geology and Geophysics, University of Utah, Salt Lake City, UT 84112, United States, Department of Biology, University of Utah, Salt Lake City, UT 84112, United States

Recommended Citation:
Tejada J.V.,Flynn J.J.,Antoine P.-O.,et al. Comparative isotope ecology of western Amazonian rainforest mammals[J]. Proceedings of the National Academy of Sciences of the United States of America,2020-01-01,117(42)
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