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EnglishThe coexistence of numerous tree species in tropical forests is commonly explained by negative dependence of recruitment on the conspecific seed and tree density due to specialist natural enemies that attack seeds and seedlings (‘Janzen–Connell’ effects). Less known is whether guilds of shared seed predators can induce a negative dependence of recruitment on the density of different species of the same plant functional group. We studied 54 plots in tropical forest on Barro Colorado Island, Panama, with contrasting mature tree densities of three coexisting large seeded tree species with shared seed predators. Levels of seed predation were far better explained by incorporating seed densities of all three focal species than by conspecific seed density alone. Both positive and negative density dependencies were observed for different species combinations. Thus, indirect interactions via shared seed predators can either promote or reduce the coexistence of different plant functional groups in tropical forest.
Garzon-Lopez C.X.; Ballesteros-Mejia, L.; Bohlman, S.A.; Ordoñez, A.; Jansen, P.A.; Olff, H. (2015). Indirect interactions among tropical tree species through shared rodent seed predators: a novel mechanism of tree species coexistence. ECOLOGY LETTERS, 18 (8): 752-760. doi: 10.1111/ele.12452 handle: http://hdl.handle.net/10449/25391
| Citation: | Garzon-Lopez C.X.; Ballesteros-Mejia, L.; Bohlman, S.A.; Ordoñez, A.; Jansen, P.A.; Olff, H. (2015). Indirect interactions among tropical tree species through shared rodent seed predators: a novel mechanism of tree species coexistence. ECOLOGY LETTERS, 18 (8): 752-760. doi: 10.1111/ele.12452 handle: http://hdl.handle.net/10449/25391 |
| Internal authors: | |
| Organization unit: | Biodiversity and Molecular Ecology Department # CRI_2011-JAN2016 |
| Authors: | Garzon-Lopez C.X.; Ballesteros-Mejia, L.; Bohlman, S.A.; Ordoñez, A.; Jansen, P.A.; Olff, H. |
| Title: | Indirect interactions among tropical tree species through shared rodent seed predators: a novel mechanism of tree species coexistence |
| Journal: | ECOLOGY LETTERS |
| Issue Date: | 2015 |
| Scientific Disciplinary Area: | Settore BIO/07 - Ecologia |
| Keywords ENG: | Dipteryx oleifera Apparent competition Apparent mutualism Astrocaryum standleyanum Janzen-Connell hypothesis Attalea butyracea Shared enemies Seed predation Tropical forests |
| Keywords ITA: | Dipteryx oleifera predatori di semi Attalea butyracea Astrocaryum standleyanum Foreste tropicali |
| Language: | English |
| IF: | With Impact Factor ISI |
| Publication status: | Published |
| Nature of content: | Articolo in rivista/Article |
| Digital Object Identifier (DOI): | http://dx.doi.org/10.1111/ele.12452 |
| Appears in Collections: | 01 - Journal article |
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