气候变化领域集成服务门户(CCPortal): Intrataxonomic trends in herbivore enamel δ13C are decoupled from ecosystem woody cover

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DOI	10.1038/s41559-021-01455-7
	Intrataxonomic trends in herbivore enamel δ13C are decoupled from ecosystem woody cover
	Robinson J.R.; Rowan J.; Barr W.A.; Sponheimer M.
发表日期	2021
ISSN	2397-334X
起始页码	995
结束页码	1002
卷号	5 期号:7
英文摘要	Analysis of enamel stable carbon isotopes (δ13Cenamel) of fossil herbivores is an important tool for making inferences about Plio-Pleistocene vegetation structure in Africa and the environmental context of hominin evolution. Many palaeoecological studies implicitly or explicitly assume that individual variation in C3–C4 plant consumption among fossil herbivores directly reflects the abundance of C3 (trees, shrubs) or C4 (low-altitude tropical grasses) vegetation. However, a strong link between δ13Cenamel of herbivores and ecosystem vegetation structure has not been rigorously established. Here we combine δ13Cenamel data from a large dataset (n = 1,643) with multidecadal Landsat estimates of C3 woody cover across 30 African ecosystems to show that there is little relationship between intrataxonomic variation in δ13Cenamel and vegetation structure. This is especially true when removing forested ecosystems (>80% woody cover)—which numerous lines of evidence suggest are rare in the Plio-Pleistocene fossil record of eastern Africa—from our analyses. Our findings stand in contrast with the common assumption that variation in herbivore δ13Cenamel values reflects changes in the relative abundance of C3–C4 vegetation. We conclude that analyses using herbivore δ13Cenamel data to shed light on the environmental context of hominin evolution should look to explicitly community-level approaches for making vegetation inferences. ? 2021, The Author(s), under exclusive licence to Springer Nature Limited.
语种	英语
scopus关键词	Africa; ecosystem; forest; herbivory; Africa; Africa, Eastern; Ecosystem; Forests; Herbivory
来源期刊	Nature Ecology & Evolution
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/256929
作者单位	Archaeology Program, Boston University, Boston, MA, United States; Geography–Anthropology Program, University of Southern Maine, Gorham, ME, United States; Department of Anthropology, University at Albany, State University of New York, Albany, NY, United States; Center for the Advanced Study of Human Paleobiology, Department of Anthropology, The George Washington University, Washington, DC, United States; Department of Anthropology, University of Colorado at Boulder, Boulder, CO, United States
推荐引用方式 GB/T 7714	Robinson J.R.,Rowan J.,Barr W.A.,et al. Intrataxonomic trends in herbivore enamel δ13C are decoupled from ecosystem woody cover[J],2021,5(7).
APA	Robinson J.R.,Rowan J.,Barr W.A.,&Sponheimer M..(2021).Intrataxonomic trends in herbivore enamel δ13C are decoupled from ecosystem woody cover.Nature Ecology & Evolution,5(7).
MLA	Robinson J.R.,et al."Intrataxonomic trends in herbivore enamel δ13C are decoupled from ecosystem woody cover".Nature Ecology & Evolution 5.7(2021).