Dynamic Demography of Ant- and Bird-Dispersed Herbs: Divergent Responses to Tropical Forest Gap-Phase Regeneration

蚂蚁和鸟类传播的草本植物的动态人口统计：对热带森林间隙再生的不同反应

• 批准号: 8906637
• 负责人: Carol Horvitz
• 金额: $ 21万
• 依托单位: University of Miami
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-01-01 至 1993-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8906637&HistoricalAwards=false
• 关键词: Dynamic; Demography; Ant; Bird; Dispersed

Seed distribution, plant demography and spatiotempporal heterogeneity ofthe environment, by their interactions, determine the ecological and evolutionary landscape inhabited by an organism. A simple hypothesis that quantitatively links these three areas of evolutionary ecology in a new way is proposed. A model of plant population dynamics and forest dynamics predicts that ant-dispersed species will be characterized by a slower rate of demographic change during gap-phase regeneration than bird-dispersed species. Selection for these divergent seed dispersal syndromes (local dispersal vs. long-distance dispersal) will be investigated in a family of understory herbs by comparing changes in demography, light environments and disperser assemblages during gap-phase regeneration. Preliminary data confirmed that the Costa Rican Marantaceae provide an excellent opportunity for the study. The static distribution of plants in forest light habitats was significantly associated with dispersal syndrome, suggesting differences in their dynamic response to intermediate habitats during gap-phase regeneration.

种子分布、植物种群和时空 环境的异质性，通过它们之间的相互作用， 生态和进化的景观， 有机体 一个简单的假设，定量地联系这些 三个领域的进化生态学的一个新的方式提出。 一 植物种群动态和森林动态预测模型 蚂蚁分散的物种将以较慢的速度 在间隙阶段再生期间的人口变化率 鸟类分散的物种。 选择这些不同的种子 弥散综合征（局部弥散vs.远距离弥散） 将调查在一个家庭的林下草本植物比较 人口、光环境和扩散的变化 间隙相再生过程中的组合。 初步数据 证实，哥斯达黎加竹芋科提供了一个很好的 学习的机会。 植物的静态分布 森林光生境与扩散显著相关 综合征，表明他们的动态反应的差异， 在间隙阶段更新的中间生境。