Long‐term shifts in the functional composition and diversity of a tropical dry forest: a 30‐yr study
Long‐term shifts in the functional composition and diversity of a tropical dry forest: a 30‐yr study
复制标题
DOI：
10.1002/ecm.1408
复制
发表时间：
2020-08
影响因子：
6.1
通讯作者：
N. Swenson;C. Hulshof;M. Katabuchi;B. Enquist
中科院分区：
文献类型：
--
作者：
N. Swenson;C. Hulshof;M. Katabuchi;B. Enquist
在过去的三十年里，人们一直在共同努力研究世界各地热带森林的长期动态。关于物种多样性、物种组成和物种特异性人口统计率的时间趋势的数据现在已经积累起来。这些数据可用于测试关于环境和人口随机性在推动森林动态方面所起作用的预测。通过量化热带森林功能组成和多样性的时间趋势，可以进一步完善这些分析。例如，我们只有少数研究量化了热带森林功能组成的方向性变化，以应对全球变化驱动因素。本研究使用的数据从三个人口普查跨越30年的新热带干林动态图提供新的见解如何功能多样性和组成的热带森林已随时间而变化。具体来说，我们的目标是：（1）量化种群动态，并将其与环境或人口变化的预期进行比较;（2）量化物种丰富度和功能多样性的长期趋势;（3）测试森林功能组成是否随着时间的推移发生了方向性变化，以及导致这些变化的种群变化;（4）确定森林的功能组成是否发生了方向性变化。（4）将这些长期结果置于森林演替和气候历史的背景下。
Over the past three decades, there has been a concerted effort to study the long‐term dynamics of tropical forests throughout the world. Data regarding temporal trends in species diversity, species composition, and species‐specific demographic rates have now been amassed. Such data can be utilized to test predictions regarding the roles the environment and demographic stochasticity play in driving forest dynamics. These analyses could be further refined by quantifying the temporal trends in the functional composition and diversity in tropical forests. For example, we have only a handful of studies that quantify directional shifts in the functional composition in tropical forests in response to global change drivers. The present study uses data from three censuses spanning 30 yr in a Neotropical dry forest dynamics plot to provide novel insights into how the functional diversity and composition of a tropical forest has changed through time. Specifically, here we aim to (1) quantify population dynamics and compare it to that expected from environmental or demographic variance; (2) quantify long‐term trends in species richness and functional diversity; (3) test whether there have been directional changes in the functional composition of the forest though time and the population changes that are responsible for these changes; and (4) place these long‐term results into the context of the successional and climatic history of the forest.