Affiliation:
1. The Hakubi Center for Advanced Research Kyoto University Kyoto Japan
2. Graduate School of Agriculture Kyoto University Kyoto Japan
3. Department of Forest Science Tokyo University of Agriculture Tokyo Japan
4. Institute for Global Environmental Strategies Hayama Japan
Abstract
AbstractAlthough masting in Southeast Asia is characterized by the interspecific synchronization of reproduction, little is known about the variation in regeneration strategies among sympatric tree species during major masting events. Herein, we examined the hypothesis that non‐abundant species achieve greater seed survival per seed production at the pre‐ and post‐dispersal stages by synchronizing reproduction with abundant species. During the masting event from May to September 2010, we installed seed traps in a primary forest plot of the Deramakot Forest Reserve, Borneo. To identify the possible causes of post‐dispersal seed mortality, we conducted a seed‐sowing experiment from September 2010 to July 2011 in a primary forest plot with high community‐level dipterocarp seed density and two surrounding secondary forests with low seed densities. An abundant species (Shorea multiflora) produced more seeds than other species and exhibited a lower survival rate during the pre‐dispersal stage. The ratio of aborted seeds was greater in species with greater seed production, while the ratio of seeds predated by insects was not, suggesting that resource limitations and/or greater inbreeding frequency may explain inefficient seed production. Interspecific variation was rarely observed for post‐dispersal seed survival rates. Our study highlights the density‐dependent variation in reproductive success between abundant and non‐abundant dipterocarp species at the pre‐dispersal stage. Non‐abundant species achieved greater reproductive success by synchronizing reproduction with the masting of abundant species, which might be an important mechanism for sustainability of rare species populations.
Funder
Japan Society for the Promotion of Science
Kyoto University
Subject
Ecology, Evolution, Behavior and Systematics
Cited by
1 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献