Proximity to roads disrupts rodents' contributions to seed dispersal services and subsequent recruitment dynamics
文献类型：期刊论文
| 作者 | Chen, Wenwen2; Zhong, Jie4; Carson, Walter P.; Tang, Zhanhui4; Xie, Zongqiang ; Sun, Shucun2; Zhou, Youbing
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| 刊名 | JOURNAL OF ECOLOGY
 |
| 出版日期 | 2019 |
| 卷号 | 107期号:6页码:2623-2634 |
| 关键词 | Janzen-Connell hypothesis lottery competition plant regeneration Quercus recruitment dynamics roads rodents seed dispersal |
| ISSN号 | 0022-0477 |
| DOI | 10.1111/1365-2745.13221 |
| 文献子类 | Article |
| 英文摘要 | Seed dispersal and subsequent recruitment dynamics play a crucially important role in regulating species coexistence and structuring tree diversity in diverse forests. Wildlife, which can dually shape the tree recruitment process by simultaneously functioning as natural enemies and seed dispersers, are undergoing widespread changes in population and behaviour due to the detrimental effects of expanding global road networks. However, the impact of these changes on recruitment dynamics through the alteration of seed dispersal processes remains understudied. Here, we assessed how roads affect animal-mediated recruitment dynamics from the seed to adult stages of trees using a ubiquitous vertebrate-seed model: rodents and acorns. To quantify the degree to which proximity to a road alters seed dispersal and regulates subsequent recruitment dynamics, we conducted seed dispersal and predation experiments, and investigated the natural recruitment of a dominant tree species (Quercus aliena) from September 2009 to July 2012 in a subtropical forest of central China. Roads caused a decreased seed dispersal distance and increasing larder hoarding, demonstrating a weakened contribution of rodents to seed dispersal services. These patterns were stronger in the masting year than in the non-masting year. Correspondingly, seedlings, saplings and adult trees had higher densities near roads than far from roads. Near roads, recruit transition rates (i.e. seedling-to-sapling and sapling-to-juvenile) were low, and the influential strength of conspecific adult density was weakened over these recruit transitions, indicating that space limitation and lottery competition, not conspecific negative density-dependent effects, approximately determined the near-road recruitment process. Furthermore, most adults near roads were young, and their ages matched the road ages. Synthesis. Roads diminished animal-mediated seed dispersal services and disrupted subsequent recruitment dynamics in Quercus aliena populations, thus weakening the key process promoting diversity in forest ecosystems. Given that these animal-regulated roles in recruitment dynamics are widespread stabilizing forces for tree coexistence, our findings suggest that the ubiquity of roads and their continued expansion will contribute to the increase in forests dominated by a relatively low number of species. Consequently, the growing expansion of road networks will ultimately cause profound changes in community composition and structure across diverse forests worldwide. |
| 学科主题 | Plant Sciences ; Ecology |
| 出版地 | HOBOKEN |
| 电子版国际标准刊号 | 1365-2745 |
| WOS关键词 | NEGATIVE DENSITY-DEPENDENCE ; PLANT DIVERSITY ; SMALL MAMMALS ; TREE ; FOREST ; HERBIVORES ; GAPS ; INFRASTRUCTURE ; CONSERVATION ; INCREASES |
| WOS研究方向 | Plant Sciences ; Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000491025800010 |
| 出版者 | WILEY |
| 源URL | [http://ir.ibcas.ac.cn/handle/2S10CLM1/19396]  |
| 专题 | 植被与环境变化国家重点实验室 |
| 作者单位 | 1.Northeast Normal Univ, Sch Environm, Changchun, Jilin, Peoples R China 2.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing, Peoples R China 3.Carson, Walter P.] Univ Pittsburgh, Dept Biol Sci, Pittsburgh, PA 15260 USA 4.Nanjing Univ, Sch Life Sci, Dept Ecol, Nanjing, Jiangsu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, Wenwen,Zhong, Jie,Carson, Walter P.,et al. Proximity to roads disrupts rodents' contributions to seed dispersal services and subsequent recruitment dynamics[J]. JOURNAL OF ECOLOGY,2019,107(6):2623-2634. |
| APA | Chen, Wenwen.,Zhong, Jie.,Carson, Walter P..,Tang, Zhanhui.,Xie, Zongqiang.,...&Zhou, Youbing.(2019).Proximity to roads disrupts rodents' contributions to seed dispersal services and subsequent recruitment dynamics.JOURNAL OF ECOLOGY,107(6),2623-2634. |
| MLA | Chen, Wenwen,et al."Proximity to roads disrupts rodents' contributions to seed dispersal services and subsequent recruitment dynamics".JOURNAL OF ECOLOGY 107.6(2019):2623-2634. |
入库方式： OAI收割
来源：植物研究所
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