气候变化领域集成服务门户(CCPortal): Dietary resource partitioning among three coeval proboscidean taxa (Anancus capensis; Mammuthus subplanifrons; Loxodonta cookei) from the South African Early Pliocene locality of Langebaanweg E Quarry

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DOI	10.1016/j.palaeo.2020.109606
	Dietary resource partitioning among three coeval proboscidean taxa (Anancus capensis; Mammuthus subplanifrons; Loxodonta cookei) from the South African Early Pliocene locality of Langebaanweg E Quarry
	Groenewald P.A.; Sealy J.; Stynder D.; Smith K.M.
发表日期	2020
ISSN	0031-0182
卷号	543
英文摘要	The co-existence of megaherbivores in present-day ecosystems is uncommon. During the Early Pliocene, three large proboscidean taxa (Anancus capensis, Mammuthus subplanifrons and Loxodonta cookei) co-existed in the strongly C3-dominated Langebaanweg (LBW) environment, on the southwestern coast of South Africa. It is expected that this would have required at least some resource partitioning. To investigate whether/how dietary resources were partitioned, we have measured δ13C and δ18O in tooth enamel from the molars of A. capensis (n = 13), M. subplanifrons (n = 3) and L. cookei (n = 20). δ13C values for A. capensis are more tightly clustered and the mean more negative than for L. cookei and M. subplanifrons. Anancus capensis probably favoured shady, wooded parts of the LBW environment, where it mainly browsed. Loxodonta cookei and M. subplanifrons spent more time in open habitats and were dietarily flexible. The preference for browse of A. capensis may have contributed to its extinction, whereas the dietary flexibility of the genus Loxodonta meant it was able to survive to the present. We did not find significant differences in δ18O values between the three taxa, which suggests that they drank from the same water sources as expected if they were all resident in the LBW palaeoenvironment. Our study shows that the carrying capacity of the C3- dominated LBW environment was high. © 2020 Elsevier B.V.
英文关键词	C3 environment; Carbon isotopes; Ecology; Proboscidean evolution; Tooth enamel
语种	英语
scopus关键词	carbon isotope; carrying capacity; coexistence; enamel; herbivore; Pliocene; taxonomy; Langebaanweg; South Africa; Western Cape; Loxodonta; Mammuthus
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/150589
作者单位	Dept. of Archaeology, University of Cape Town, Cape Town, South Africa; Dept. of Geology & Geography, Georgia Southern University, Statesboro, GA, United States
推荐引用方式 GB/T 7714	Groenewald P.A.,Sealy J.,Stynder D.,et al. Dietary resource partitioning among three coeval proboscidean taxa (Anancus capensis; Mammuthus subplanifrons; Loxodonta cookei) from the South African Early Pliocene locality of Langebaanweg E Quarry[J],2020,543.
APA	Groenewald P.A.,Sealy J.,Stynder D.,&Smith K.M..(2020).Dietary resource partitioning among three coeval proboscidean taxa (Anancus capensis; Mammuthus subplanifrons; Loxodonta cookei) from the South African Early Pliocene locality of Langebaanweg E Quarry.Palaeogeography, Palaeoclimatology, Palaeoecology,543.
MLA	Groenewald P.A.,et al."Dietary resource partitioning among three coeval proboscidean taxa (Anancus capensis; Mammuthus subplanifrons; Loxodonta cookei) from the South African Early Pliocene locality of Langebaanweg E Quarry".Palaeogeography, Palaeoclimatology, Palaeoecology 543(2020).