| The first fossil record of ring-cupped oak (Quercus L. subgenus Cyclobalanopsis (Oersted) Schneider) in Tibet and its paleoenvironmental implications | |
Xu, He1,3; Su, Tao1,4; Zhang, Shi-Tao5; Deng, Min6; Zhou, Zhe-Kun1,2
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| 2016-01-15 | |
| 发表期刊 | PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
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| 卷号 | 442页码:61-71 |
| 摘要 | Some taxa are good indicators of particular climates because their distribution is determined by specific temperature or precipitation requirements. Ring-cupped oaks (Quercus L. subgenus Cyclobalanopsis (Oersted) Schneider) are mainly distributed in tropical and subtropical climates in southeastern and eastern Asia. Recently, we collected many leaf fossils of ring-cupped oaks from the Upper Miocene Lawula Formation of eastern Tibet at an elevation of 3910 m. No modern species of ring-cupped oaks could survive at such a high elevation under current climate conditions. Based on detailed morphological comparisons with extant and fossil species, we propose a new species, Quercus tibetensis H. Xu, T. Su et Z.K. Zhou sp. nov., representing the first fossil record of ring cupped oaks in Tibet. We investigated the climate requirements of the nearest living relatives (NLRs) of Q. tibetensis, and the ranges of mean annual temperature (MAT) and mean annual precipitation (MAP) are 7.9 degrees C to 21.7 degrees C, and 733.0 mm to 2536.8 mm, respectively, compared with the current climate at the fossil site with MAT of 4.4 degrees C and MAP of 516.5 mm. The NLRs of Q. tibetensis are distributed at elevations from 70 m to 3000 m, much lower than the fossil locality (3910 m). The altitudinal difference of the fossil site is 161 m to 3091 m between the late Miocene and today, even considering the warmer global climate during the late Miocene. Our results indicate that the climate conditions at the fossil site during the late Miocene were warmer and more humid than the current climate. Meanwhile, this new fossil finding corroborates results from previous studies that the southeastern part of the Qinghai-Tibetan Plateau experienced continued uplift since the late Miocene. (C) 2015 Elsevier B.V. All rights reserved. |
| 关键词 | Cyclobalanopsis Leaf Miocene Paleoclimate Qinghai-tibetan Plateau Uplift |
| DOI | 10.1016/j.palaeo.2015.11.014 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000369681300006 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.kib.ac.cn/handle/151853/25956 |
| 专题 | 中国科学院东亚植物多样性与生物地理学重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Trop Forest Ecol, Xishuangbanna Trop Bot Garden, Mengla 666303, Peoples R China 2.Chinese Acad Sci, Kunming Inst Bot, Key Lab Plant Divers & Biogeog East Asia, Kunming 650204, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Chinese Acad Sci, Nanjing Inst Geol & Paleontol, State Key Lab Paleobiol & Stratig, Nanjing 210008, Peoples R China 5.Kunming Univ Sci & Technol, Fac Land Resource Engn, Kunming 650093, Peoples R China 6.Chinese Acad Sci, Shanghai Chengshan Plant Sci Res Ctr, Shanghai 201602, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xu, He,Su, Tao,Zhang, Shi-Tao,et al. The first fossil record of ring-cupped oak (Quercus L. subgenus Cyclobalanopsis (Oersted) Schneider) in Tibet and its paleoenvironmental implications[J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2016,442:61-71. |
| APA | Xu, He,Su, Tao,Zhang, Shi-Tao,Deng, Min,&Zhou, Zhe-Kun.(2016).The first fossil record of ring-cupped oak (Quercus L. subgenus Cyclobalanopsis (Oersted) Schneider) in Tibet and its paleoenvironmental implications.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,442,61-71. |
| MLA | Xu, He,et al."The first fossil record of ring-cupped oak (Quercus L. subgenus Cyclobalanopsis (Oersted) Schneider) in Tibet and its paleoenvironmental implications".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 442(2016):61-71. |
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