Paleoecology of Pleistocene mammals and paleoclimatic change in South China: Evidence from stable carbon and oxygen isotopes
文献类型：期刊论文
| 作者 | Sun, Fajun1,2; Wang, Yang1,2,3,4; Wang, Yuan4; Jin, Chang-zhu4; Deng, Tao4 ; Wolff, Burt1,2
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| 刊名 | PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
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| 出版日期 | 2019-06-15 |
| 卷号 | 524期号:0页码:1-12 |
| 关键词 | Fossils Stable isotopes Habitats Paleoclimate Yugong Cave Baxian Cave |
| ISSN号 | 0031-0182 |
| DOI | 10.1016/j.palaeo.2019.03.021 |
| 英文摘要 | The role of climate change in the evolution and diversification of hominoids remains a hotly debated issue. Stable isotope analyses of fossil mammals that coexisted with the hominoids can provide insights into hominoid palaeoenvironments and shed light on this debate. Here, we report results of stable carbon and oxygen isotope analyses of tooth enamel samples from a variety of Pleistocene mammals including pandas, deer, elephants, pigs, rhinos, and bovids from two hominoid fossil localities (Yugong Cave and Baxian Cave) in South China. Enamel delta C-13 values indicate that most of the mammals living in the study area during the late Middle Pleistocene had C-3-based diets but a small number of individuals consumed some C-4 grasses. This indicates the presence of C-4 plants in the region during the late Middle Pleistocene, most likely in patches of open areas in a predominantly forested environment. However, during the early Late Pleistocene, all of the mammals examined had C-3-based diets, except one bovid and one panda that may have ingested small amounts of C-4 plants. This indicates a dense forested environment with little C-4 grasses during the early Late Pleistocene. Like the Early Pleistocene pygmy panda (Ailuropoda microta) from Yanliang Cave, the late Middle Pleistocene Ailuropoda baconi from Yugong Cave and the early Late Pleistocene Ailuropoda melanoleuca from Baxian Cave had higher mean diet-delta C-13 values than other co-occurring herbivores, indicating they preferred relatively open forest habitats and had more restricted diets compared to other mammals. The reconstructed mean paleo-meteoric water delta O-18(w) values are lower than the annual average delta O-18(w) value of modern precipitation in the region, suggesting that the climatic conditions during the times when these Pleistocene mammals were alive were colder and/or wetter than today. In addition, delta O-18 values of the obligate drinkers (pigs, rhinos, bovids) display an overall decreasing trend, accompanied by increased range of delta O-18 variations, from the Early Pleistocene to the early Late Pleistocene. This suggests that the regional climate became colder and/or wetter, with increased seasonality, from the Early Pleistocene to the early Late Pleistocene, likely related to intensified glaciation. The change in climate to colder conditions may be responsible for the extinction of the Gigantopithecus in this region. |
| WOS关键词 | TIBETAN PLATEAU ; ENVIRONMENTAL-CHANGE ; DIET ; DISCRIMINATION ; ECOLOGY ; ARIDITY ; PLANTS ; TOOTH ; BONE ; RECONSTRUCTION |
| 资助项目 | National Science Foundation[DMR-1644779] ; State of Florida |
| WOS研究方向 | Physical Geography ; Geology ; Paleontology |
| 语种 | 英语 |
| WOS记录号 | WOS:000469154700001 |
| 出版者 | ELSEVIER SCIENCE BV |
| 源URL | [http://119.78.100.205/handle/311034/10041]  |
| 专题 | 古脊椎动物与古人类研究所_图书馆1 |
| 通讯作者 | Sun, Fajun |
| 作者单位 | 1.Florida State Univ, Dept Earth Ocean & Atmospher Sci, Tallahassee, FL 32306 USA 2.Natl High Magnet Field Lab, Tallahassee, FL 32306 USA 3.Jinan Univ, Inst Groundwater & Earth Sci, Guangzhou 510632, Guangdong, Peoples R China 4.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Vertebrate Evolut & Human Origins, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Sun, Fajun,Wang, Yang,Wang, Yuan,et al. Paleoecology of Pleistocene mammals and paleoclimatic change in South China: Evidence from stable carbon and oxygen isotopes[J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2019,524(0):1-12. |
| APA | Sun, Fajun,Wang, Yang,Wang, Yuan,Jin, Chang-zhu,Deng, Tao,&Wolff, Burt.(2019).Paleoecology of Pleistocene mammals and paleoclimatic change in South China: Evidence from stable carbon and oxygen isotopes.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,524(0),1-12. |
| MLA | Sun, Fajun,et al."Paleoecology of Pleistocene mammals and paleoclimatic change in South China: Evidence from stable carbon and oxygen isotopes".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 524.0(2019):1-12. |
入库方式： OAI收割
来源：古脊椎动物与古人类研究所
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