The Dynamics of a Neotropical Forest: The 1995 Recensus Including Seedling and Small Sapling Populations

[405933] Hubbell先前的研究已经测量了Barro Colorado岛森林中调节单个树种种群和维持树种多样性的密度和频率依赖的强度。这些分析的结果仅限于直径1厘米的树木，然而这个年龄类别很可能错过了发生在森林幼苗层和树苗层的重要相互作用。这项研究的经验性质将利用以前在1982年、1985年和1990年测绘和普查过的50公顷热带森林地块。这项研究将提供1995年50公顷地块的最新情况，并开始对幼苗和树苗种群进行长期分析。这项研究将首次对热带森林幼苗和树苗种群的密度和频率依赖性进行全面分析。对热带树种幼苗和幼树动态的详细分析将为热带森林生态系统中树种丰富度的维持机制提供有价值的经验数据。

9405933 Hubbell Previous research has measured the strength of density- and frequency-dependence in regulating individual tree species populations and in maintaining tree species diversity in Barro Colorado Island forests. The results of these analyses were restricted to trees 1 cm in diameter, yet this age class is likely to miss the important interactions that occur in the seedling and sapling layers of the forest. The empirical nature of this study will capitalize on a 50 ha plot of tropical forest that has previously been mapped and censused in 1982, 1985, and 1990. This study will provide the 1995 recensus of the 50 ha plot and begin a long-term analysis of seedling and sapling populations. %%% This study will provide the first comprehensive analysis of density- and frequency-dependence in seedling and sapling populations of a tropical forest. The detailed analyses of the dynamics of seedlings and saplings of tropical tree species will provide valuable empirical data on the mechanisms that maintain tree species richness in tropical forest ecosystems.