CRB: Tropical Forest Regeneration: Influence of Animal Seed-dispersers

CRB：热带森林再生：动物种子传播者的影响

• 批准号: 9301961
• 负责人: Timothy Moermond
• 金额: $ 20万
• 依托单位: University of Wisconsin-Madison
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-08-15 至 1998-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9301961&HistoricalAwards=false
• 关键词: CRB; Tropical; Forest; Regeneration; Influence

9301961 Moermond This research will investigate the consequences of seed-dispersal by different animal fruit-eaters on tree regeneration dynamics at two sites within the Nyungwe forest, an African montane tropical forest in Rwanda. The process of natural regeneration of forest trees depends on a basic set of processes: seed production, seed dispersal, seedling establishment, and survival of seedlings to reproductive adults. This research will focus particularly on two of these processes: seed dispersal and seedling establishment. The consequences of differences among disperser species will be investigated in terms of tree species replacement patterns. This will be done 1) by describing and modeling the pattern of seed dispersion generated by selected animal disperser species for a representative series of tree species, and 2) by assessing the relative success of seedling establishment of those trees among the principal vegetation patch types of the forest(closed forest, secondary forest, and openings). %%% Comparison of survival and establishment of seedlings under the parent tree and away from the parent in different forest patch types will be used to evaluate the relative importance of dispersal. Predictions generated by the study at a site with full complement of animal dispersers (Uwinka site) will be tested against measures of seed rain and tree replacement estimates. The observed patterns of seed rain, tree replacement estimates, and forest composition will then be compared to those at a forest-edge with an impoverished suite of dispersers (Kitabi site). This site will not only provide and assessment of the apparent consequences of loss of dispersers, but will provide a critical case in which to test the applicability and the power of the predictive model. The proposed research relates both to the theory of conservation biology and its application to tropical forest management. is problematical however, depending upon whose system is being used although Fries (1874) considers the Polyporaceae to be one of two families within the order Aphyllophorales (fungi with non lamellate hymenophores), more recent workers ! ! ! F ( Times New Roman Symbol & Arial " h e e ! - Gayle Edmonds Gayle Edmonds

9301961 Moermond本研究将调查种子传播的后果，不同的动物水果吃树再生动力学在两个网站内的Nyungwe森林，非洲山地热带森林在卢旺达。 森林树木的自然更新过程取决于一系列基本过程：种子生产、种子传播、幼苗建立和幼苗存活到生殖成虫。 这项研究将特别关注其中的两个过程：种子传播和幼苗建立。 扩散物种之间的差异的后果将在树种更替模式方面进行调查。 这将通过以下方式完成：1）描述和模拟由选定的动物传播物种为一系列代表性树种产生的种子传播模式; 2）评估森林主要植被斑块类型（郁闭林、次生林和开阔地）中这些树木幼苗建立的相对成功率。 比较不同森林斑块类型中母树下和远离母树的幼苗的存活和建立，以评估扩散的相对重要性。 将根据种子雨和树木更替估计数的措施，对在一个动物散布者充分补充的地点（Uwinka地点）进行研究所产生的预测进行检验。 观察到的模式的种子雨，树木更替的估计，和森林的组成，然后将进行比较，在森林边缘的贫困套件的传播（Kitabi网站）。 该网站不仅提供和评估分散剂损失的明显后果，而且还将提供一个关键案例，以测试预测模型的适用性和能力。 拟议的研究涉及保护生物学理论及其在热带森林管理中的应用。 然而，这取决于使用的是谁的系统 尽管Fries（1874）认为多孔菌科是无褶菌目（具有非片状菌丝体的真菌）中的两个科之一，但最近的研究者认为多孔菌科是一个新的科。 ! ! ! F ( Times New Roman 符号Arial " H e e ! - 盖勒埃德蒙兹盖勒埃德蒙兹