Dissertation Research: Effect of an Experimentally Created Light Gradient on Tree Seedling Performance in a Tropical Secondary Forest Community

论文研究：实验创建的光梯度对热带次生林群落树木幼苗性能的影响

• 批准号: 9411808
• 负责人: Victoria Sork
• 金额: $ 0.7万
• 依托单位: University of Missouri-Saint Louis
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1994
• 资助国家: 美国
• 起止时间: 1994-09-01 至 1996-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9411808&HistoricalAwards=false
• 关键词: Dissertation; Research; Effect; Experimentally; Created

9411808 Sork Young secondary forests are becoming increasingly common and important throughout the tropics as primary forests are cleared and unproductive fields and pastures are abondoned. However, the dynamics of tree regeneration in secondary forests have received very little research. This study examines the ecology of tree seedling establishment in ten-year old secondary forest in Amazonian Peru. The objectives are to: 1) examine intra- and interspecific patterns of growth and survivorship of protected seedlings, 2) measure impact of exposure to physical damage from herbivores and litter fall on seedling performance, and 3) evaluate whether morphological traits of seeds and seedlings are predictive of performance. This research will greatly improve our understanding of the processes of secondary forest regeneration. The results of this study will have application in the conservation and restoration of tropical forest ecosystems.

小行星9411808 在整个热带地区，随着原始森林被砍伐，贫瘠的田地和牧场被放弃，年轻的次生林变得越来越普遍和重要。 然而，在次生林树木更新动态的研究很少。 本研究探讨了秘鲁亚马逊河流域10年生次生林的苗木建立生态学。 其目标是：1）检查保护幼苗的生长和存活的种内和种间模式，2）测量暴露于来自食草动物和凋落物的物理损害对幼苗性能的影响，以及3）评估种子和幼苗的形态特征是否可预测性能。 这项研究将大大提高我们对次生林更新过程的认识。 本研究的结果将在热带森林生态系统的保护和恢复中得到应用。