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| Global patterns of Rhododendron diversity: The role of evolutionary time and diversification rates | |
Shrestha, Nawal1; Wang, Zhiheng1; Su, Xiangyan1; Xu, Xiaoting1,3; Lyu, Lisha1,4; Liu, Yunpeng1; Dimitrov, Dimitar5; Kennedy, Jonathan D.; Wang, Qinggang1; Tang, Zhiyao1; Feng, Xiaojuan6
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| 2018 | |
| 发表期刊 | GLOBAL ECOLOGY AND BIOGEOGRAPHY
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| ISSN | 1466-822X |
| 卷号 | 27期号:8页码:913-924 |
| 摘要 | Aim: Understanding the evolution of the latitudinal diversity gradient (i.e. increase in species diversity towards the tropics) is a prominent issue in ecology and biogeography. Disentangling the relative contributions of environment and evolutionary history in shaping this gradient remains a major challenge because their relative importance has been found to vary across regions and taxa. Here, using the global distributions and a molecular phylogeny of Rhododendron, one of the largest genera of flowering plants, we aim to compare the relative contributions of contemporary environment, evolutionary time and diversification rates in generating extant species diversity patterns. Location: Global. Time period: Undefined. Major taxa studied: Rhododendron. Methods: We compiled the global distributions of all Rhododendron species, and constructed a dated molecular phylogeny using nine chloroplast genes and seven nuclear regions. By integrating these two datasets, we estimated the temporal trends of Rhododendron diversification, and explored the global patterns of its species diversity, net diversification rates, and species ages. Next, we reconstructed the geographical ancestral area of the clade. Finally, we compared the relative contribution of contemporary environment, time-for-speciation, and diversification rates on the species diversity pattern of Rhododendron. Results: In contrast to the predictions of the time-for-speciation hypothesis, we found that although Rhododendron originated at a temperate latitude, its contemporary species diversity is highest in the tropics/subtropics, suggesting an into-the-tropics colonization for this genus. We found that the elevated diversification induced by heterogeneous environmental conditions in the tropics/subtropics shapes the global pattern of Rhododendron diversity. Main conclusions: Our findings support tropical and subtropical mountains as not only biodiversity and endemism hotspots, but also as cradles for the diversification of Rhododendron. Our study emphasizes the need of unifying ecological and evolutionary approaches in order to gain comprehensive understanding of the mechanisms underlying the global patterns of plant diversity. |
| 关键词 | ancestral area reconstruction evolutionary history habitat heterogeneity into-the-tropics species richness time-for-speciation tropical mountains |
| 学科领域 | Ecology ; Geography, Physical |
| DOI | 10.1111/geb.12750 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS关键词 | SPECIES RICHNESS PATTERNS ; HISTORICAL BIOGEOGRAPHY ; ENVIRONMENTAL HETEROGENEITY ; LATITUDINAL DIVERSITY ; NICHE CONSERVATISM ; DISPERSAL ; PHYLOGENY ; GRADIENT ; CLIMATE ; SPECIATION |
| WOS记录号 | WOS:000442582200003 |
| 出版者 | WILEY |
| 文献子类 | Article |
| 出版地 | HOBOKEN |
| EISSN | 1466-8238 |
| 资助机构 | National Key Research Development Program of China [2017YFA0605101] ; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31650110471, 31522012, 31470564, 31621091] ; 111 ProjectMinistry of Education, China - 111 Project [B14001] ; Chinese Academy of Sciences-Peking University Pioneer Collaboration Team ; Fundamental Research Funds for Central UniversitiesFundamental Research Funds for the Central Universities [YJ201721] ; Danish National Research FoundationDanmarks Grundforskningsfond [DNRF96] |
| 作者邮箱 | zhiheng.wang@pku.edu.cn |
| 作品OA属性 | Green Published, hybrid |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.ibcas.ac.cn/handle/2S10CLM1/20418 |
| 专题 | 植被与环境变化国家重点实验室 |
| 作者单位 | 1.Peking Univ, Inst Ecol, Beijing 100871, Peoples R China 2.Peking Univ, Key Lab Earth Surface Proc, Minist Educ, Coll Urban & Environm Sci, Beijing 100871, Peoples R China 3.Wang, Zhiheng; Dimitrov, Dimitar; Kennedy, Jonathan D.] Univ Copenhagen, Ctr Macroecol Evolut & Climate, Nat Hist Museum Denmark, Copenhagen, Denmark 4.Sichuan Univ, Coll Life Sci, Chengdu, Sichuan, Peoples R China 5.Peking Univ, Shenzhen Grad Sch, Sch Urban Planning & Design, Shenzhen, Peoples R China 6.Univ Oslo, Nat Hist Museum, Oslo, Norway 7.Chinese Acad Sci, State Key Lab Vegetat & Environm Change, Inst Bot, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Shrestha, Nawal,Wang, Zhiheng,Su, Xiangyan,et al. Global patterns of Rhododendron diversity: The role of evolutionary time and diversification rates[J]. GLOBAL ECOLOGY AND BIOGEOGRAPHY,2018,27(8):913-924. |
| APA | Shrestha, Nawal.,Wang, Zhiheng.,Su, Xiangyan.,Xu, Xiaoting.,Lyu, Lisha.,...&Feng, Xiaojuan.(2018).Global patterns of Rhododendron diversity: The role of evolutionary time and diversification rates.GLOBAL ECOLOGY AND BIOGEOGRAPHY,27(8),913-924. |
| MLA | Shrestha, Nawal,et al."Global patterns of Rhododendron diversity: The role of evolutionary time and diversification rates".GLOBAL ECOLOGY AND BIOGEOGRAPHY 27.8(2018):913-924. |
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| geb.12750.pdf（4690KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | 浏览 请求全文 | |
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