Forest fragmentation differentially affects seed dispersal of large and small-seeded tropical trees
Forest fragmentation differentially affects seed dispersal of large and small-seeded tropical trees
复制标题
DOI：
10.1016/j.biocon.2007.02.019
复制
发表时间：
2007-07-01
影响因子：
5.9
通讯作者：
Williamson, G. Bruce
中科院分区：
文献类型：
--
作者：
Cramer, Jennifer M.;Mesquita, Rita C. G.;Williamson, G. Bruce
动植物相互作用对森林破碎化的反应可能有所不同。我们假设大种子植物物种比小种子植物物种更容易受到森林破碎化的影响，因为大种子植物物种依赖于少数容易灭绝的扩散者。我们比较了大种子、哺乳动物分散的 Duckeodendron cestroides 和小种子、鸟类分散的 Bocageopsis multiflora 的种子传播。杜鹃花种子分散种子的数量、百分比、距离和分布在碎片中均有所减少，但博卡吉奥西斯则没有。热带群落中的其他破碎化研究通过三方面证据支持这一假设：（1）大种子植物物种更容易灭绝，（2）破碎化对大型动物传播者的运动的限制或改变大于小型传播者，（3）大种子和小种子物种似乎与原始和次生森林栖息地有不同的联系。因此，小种子植物可能更能抵抗森林破碎化，而大种子植物可能更容易受到影响，应优先保护。 (C) 2007 Elsevier Ltd. 保留所有权利
The responses of plant-animal interactions to forest fragmentation can vary. We hypothesized that large-seeded plant species would be more susceptible to forest fragmentation than small-seeded species because large-seeded species rely on a few, extinction prone dispersers. We compared seed dispersal of the large-seeded, mammal dispersed Duckeodendron cestroides and the small-seeded, avian dispersed Bocageopsis multiflora. The number, percentage, distance, and distributions of dispersed seeds were all reduced in fragments for Duckeodendron but not for Bocageopsis. Other fragmention research in tropical communities supports this hypothesis through three lines of evidence: (1) Large-seeded plant species are more prone to extinction, (2) Fragmentation restricts or alters the movement of large animal dispersers more than small dispersers, and (3) Large and small-seeded species seem to be differentially linked to primary and secondary forest habitats. Therefore, small-seeded plants may be more resilient to forest fragmentation while large-seeded species may be more susceptible and should be a priority for conservation. (C) 2007 Elsevier Ltd. All rights reserved