Higher clonal integration in the facultative epiphytic fern Selliguea griffithiana growing in the forest canopy compared with the forest understorey
文献类型：SCI/SSCI论文
| 作者 | Lu H. Z.; Liu, W. Y.; Yu, F. H.; Song, L.; Xu, X. L.; Wu, C. S.; Zheng, Y. L.; Li, Y. P.; Gong, H. D.; Chen, K. |
| 发表日期 | 2015 |
| 关键词 | Clonal integration facultative epiphyte forest canopy forest understorey habitat adaptation ephiphytic fern Selliguea griffithiana Polypodiaceae resource heterogeneity resource sharing clonal plant subtropical montane forest physiological integration vascular epiphytes sw china fragaria-chiloensis litter decomposition southwest china costa-rica plants temperature |
| 英文摘要 | Background and Aims The advantage of clonal integration (resource sharing between connected ramets of clonal plants) varies and a higher degree of integration is expected in more stressful and/or more heterogeneous habitats. Clonal facultative epiphytes occur in both forest canopies (epiphytic habitats) and forest understories (terrestrial habitats). Because environmental conditions, especially water and nutrients, are more stressful and heterogeneous in the canopy than in the understorey, this study hypothesizes that clonal integration is more important for facultative epiphytes in epiphytic habitats than in terrestrial habitats. Methods In a field experiment, an examination was made of the effects of rhizome connection (connected vs. disconnected, i.e. with vs. without clonal integration) on survival and growth of single ramets, both young and old, of the facultative epiphytic rhizomatous fern Selliguea griffithiana (Polypodiaceae) in both epiphytic and terrestrial habitats. In another field experiment, the effects of rhizome connection on performance of ramets were tested in small (10 x 10 cm(2)) and large (20 x 20 cm(2)) plots in both epiphytic and terrestrial habitats. Key Results Rhizome disconnection significantly decreased survival and growth of S. griffithiana in both experiments. The effects of rhizome disconnection on survival of single ramets and on ramet number and growth in plots were greater in epiphytic habitats than in terrestrial habitats. Conclusions Clonal integration contributes greatly to performance of facultative epiphytic ferns, and the effects were more important in forest canopies than in forest understories. The results therefore support the hypothesis that natural selection favours genotypes with a higher degree of integration in more stressful and heterogeneous environments. |
| 出处 | Annals of Botany |
| 卷 | 116 |
| 期 | 1 |
| 页 | 113-122 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 0305-7364 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/38768]  |
| 专题 | 地理科学与资源研究所_历年回溯文献 |
| 推荐引用方式 GB/T 7714 | Lu H. Z.,Liu, W. Y.,Yu, F. H.,et al. Higher clonal integration in the facultative epiphytic fern Selliguea griffithiana growing in the forest canopy compared with the forest understorey. 2015. |
入库方式： OAI收割
来源：地理科学与资源研究所
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