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| Conspecific and phylogenetic density-dependent survival differs across life stages in a tropical forest | |
Zhu, Yan; Comita, Liza S.; Hubbell, Stephen P.; Ma, Keping
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| 2015 | |
| 发表期刊 | JOURNAL OF ECOLOGY
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| ISSN | 0022-0477 |
| 卷号 | 103期号:4页码:957-966 |
| 摘要 | Ecologists have long recognized that plant performance is affected by the density and composition of neighbouring individuals. With the advent of highly resolved species-level phylogenies, it has become possible to test whether such density-dependent neighbourhood interactions are also phylogenetically dependent. Most studies of density dependence have focused on a single life stage; however, the relative importance of different neighbourhood interactions may shift over the lifetime of an individual. We examined effects of conspecific neighbour density, heterospecific neighbour density and average phylogenetic relatedness of heterospecific neighbours on the survival of seedlings, saplings, juveniles and adult trees of 29 focal tree species using long-term, spatially explicit forest dynamics data and a highly resolved DNA barcode phylogeny from the tropical forest of Barro Colorado Island (BCI), Panama. Our results show a decline in the strength of conspecific negative density dependence across life stages: strong negative conspecific neighbour effects at early life stages gave way to weak positive conspecific neighbour effects for adult trees. In contrast, the effect of heterospecific neighbour density on survival showed no clear trend with life stage. We found evidence of phylogenetic density dependence in the BCI forest, with a significant negative impact of neighbourhood relatedness on focal tree survival, but only for later life stages. In contrast to studies from other tropical forests, neighbourhood relatedness had a significant positive effect on seedling survival. Furthermore, we found that focal species varied much more widely in their sensitivity to conspecific neighbour density than in their reactions to heterospecific neighbour density or phylogenetic relatedness.Synthesis. Overall, our results demonstrate that both conspecific density dependence and phylogenetic density dependence influence tropical tree survival, but that their relative importance varies with life stage and among species. Our study highlights the need to incorporate multiple life stages and multiple species when assessing the factors contributing to individual survival and species coexistence for long-lived organisms. |
| 关键词 | density dependence determinants of plant community diversity and structure Janzen-Connell hypothesis neighbourhood analysis phylogenetic relatedness seedlings dynamics species coexistence tropical forest |
| 学科领域 | Plant Sciences ; Ecology |
| DOI | 10.1111/1365-2745.12414 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS关键词 | SEEDLING MORTALITY ; HABITAT ASSOCIATIONS ; SPATIAL-PATTERNS ; LOCAL NEIGHBORHOOD ; TRAIT EVOLUTION ; TREE SEEDLINGS ; RAIN-FOREST ; DIVERSITY ; COMPETITION ; SPECIFICITY |
| WOS研究方向 | Science Citation Index Expanded (SCI-EXPANDED) |
| WOS记录号 | WOS:000356630600018 |
| 出版者 | WILEY |
| 文献子类 | Article |
| 出版地 | HOBOKEN |
| EISSN | 1365-2745 |
| 资助机构 | CAS [KSCX2-EW-Z-5] ; State Key Laboratory of Vegetation and Environmental Change [2011zyts12] ; NSF-China [31200342, 31170401, 31011120470] ; National Science Foundation [DEB-0425651, DEB-0346488, DEB-0129874, DEB-00753102, DEB-9909347, DEB-9615226, DEB-9405933, DEB-9221033, DEB-9100058, DEB-8906869, DEB-8605042, DEB-8206992, DEB-7922197, DEB-0075102, DEB-0710211, DEB-0823728, DEB-1242622, DEB-0640386] ; Center for Tropical Forest Science ; Smithsonian Tropical Research Institute ; John D. and Catherine T. MacArthur Foundation ; Mellon Foundation ; Small World Institute Fund ; NSF Research Coordination Network [DEB 1046113] ; Division Of Environmental Biology [1464389, 1354741] Funding Source: National Science Foundation |
| 作者邮箱 | kpma@ibcas.ac.cn |
| 作品OA属性 | Bronze |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.ibcas.ac.cn/handle/2S10CLM1/25919 |
| 专题 | 植被与环境变化国家重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China 2.Comita, Liza S.] Yale Univ, Sch Forestry Environm Studies, New Haven, CT 06511 USA 3.Comita, Liza S.] Ohio State Univ, Dept Ecol Evolut & Organismal Biol, Columbus, OH 43210 USA 4.Comita, Liza S.; Hubbell, Stephen P.] Smithsonian Trop Res Inst, Balboa, Ancon, Panama 5.Hubbell, Stephen P.] Univ Calif Los Angeles, Dept Ecol & Evolutionary Biol, Los Angeles, CA 90095 USA |
| 推荐引用方式 GB/T 7714 | Zhu, Yan,Comita, Liza S.,Hubbell, Stephen P.,et al. Conspecific and phylogenetic density-dependent survival differs across life stages in a tropical forest[J]. JOURNAL OF ECOLOGY,2015,103(4):957-966. |
| APA | Zhu, Yan,Comita, Liza S.,Hubbell, Stephen P.,&Ma, Keping.(2015).Conspecific and phylogenetic density-dependent survival differs across life stages in a tropical forest.JOURNAL OF ECOLOGY,103(4),957-966. |
| MLA | Zhu, Yan,et al."Conspecific and phylogenetic density-dependent survival differs across life stages in a tropical forest".JOURNAL OF ECOLOGY 103.4(2015):957-966. |
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