Topography-specific seed dispersal by Japanese macaques in a lowland forest on Yakushima Island, Japan
Article first published online: 15 OCT 2008
© 2008 The Authors. Journal compilation © 2008 British Ecological Society
Journal of Animal Ecology
Volume 78, Issue 1, pages 119–125, January 2009
How to Cite
Tsujino, R. and Yumoto, T. (2009), Topography-specific seed dispersal by Japanese macaques in a lowland forest on Yakushima Island, Japan. Journal of Animal Ecology, 78: 119–125. doi: 10.1111/j.1365-2656.2008.01482.x
- Issue published online: 11 DEC 2008
- Article first published online: 15 OCT 2008
- Received 22 November 2007; accepted 1 September 2008; Handling Editor: Jonathan Newman
- cheek pouch;
- dispersal distance;
- index of convexity;
- tree distribution pattern
- 1We investigated patterns of seed dispersal (i.e. dispersal distances and topography of seed-deposition sites) via the cheek pouches of Japanese macaques (Macaca fuscata yakui) during three seasons in a lowland forest on Yakushima Island, Japan.
- 2The mean seed-dispersal distances were 16·7, 26·1, 41·8, and 32·4 m from the trunks of mother trees of Myrica rubra, Persea thunbergii, Neolitsea sericea, and Litsea acuminata, respectively.
- 3We assessed the possible effect of macaque foraging patterns and the spatial distribution of fruiting trees on topography-specific seed dispersal. The topography of the locations of macaques differed across seasons, likely because the spatial distribution of fruiting trees determined the seasonal foraging patterns of macaques.
- 4In early summer, macaques foraged on a ridge and fed on fruits of M. rubra and P. thunbergii, which were primarily distributed and dispersed within this area. In contrast, during the winter, macaques foraged within a valley and fed on fruits of L. acuminata, which were chiefly distributed and dispersed within the valley.
- 5Seeds of M. rubra, P. thunbergii, and L. acuminata were directly dispersed to the specific topographic areas in which adult trees were distributed and in which juveniles have a predictably high probability of survival relative to random sites.