부산대학교 도서관

To link to full-text access for this article, visit this link: http://dx.doi.org/10.1016/j.biocon.2007.02.019 Byline: Jennifer M. Cramer (a)(b), Rita C.G. Mesquita (b), G. Bruce Williamson (a)(b) Keywords: Brazilian Amazon; Bocageopsis multiflora; Duckeodendron cestroides; Mutualism; Seed size Abstract: 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 fragmentation 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. Author Affiliation: (a) Department of Biological Sciences, Louisiana State University, Baton Rouge, Louisiana 70803-1705, USA (b) Biological Dynamics of Forest Fragments Project, STRI, INPA, C.P. 478, Manaus, Amazonas, CEP 69083-970, Brazil Article History: Received 5 October 2006; Revised 26 February 2007; Accepted 28 February 2007