DISSERTATION RESEARCH: Do mesoherbivores drive Neotropical rainforest understory insectivorous bird declines by limiting availability of preferred foraging microhabitat?
论文研究:中食草动物是否通过限制首选觅食微生境的可用性而导致新热带雨林林下食虫鸟类的减少?
基本信息
- 批准号:1010952
- 负责人:
- 金额:$ 1.49万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Standard Grant
- 财政年份:2010
- 资助国家:美国
- 起止时间:2010-05-01 至 2012-04-30
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Tropical birds are highly vulnerable to forest fragmentation, and declines are often attributed to the direct effects of decreased habitat size. However these birds have nearly disappeared from some large forest fragments, but persist in smaller nearby reserves. Mechanisms other that habitat size proposed to account for these declines (food-limitation, dispersal-limitation and nest predation) also fail to explain the puzzling patterns observed in several tropical forests. The proposed research investigates a new, alternative hypothesis to account for bird declines in large habitat patches that has three key components: (1) understory insectivorous birds prefer to forage in dense woody vines called lianas; (2) collared peccaries suppress liana densities, and (3) loss of suitable habitat and, consequently, bird populations correspond with peccary densities. The study will test the three components of this hypothesis in central Panama, where both focal bird populations and lianas have increased while peccary densities remain low.Results from this project have immediate conservation applications in reserves across Central America. The graduate student involved is bilingual and plans to engage local land owners and managers in Panama in the project. Outreach to local communities will include bird identification and bird banding demonstrations. Undergraduate students from groups typically underrepresented in science will also be trained through participation in this research.
热带鸟类非常容易受到森林破碎化的影响,其数量减少往往是由于栖息地面积缩小的直接影响。然而,这些鸟类几乎从一些大型森林片段中消失,但在附近较小的保护区中仍然存在。其他机制,栖息地的大小,提出这些下降(食物限制,扩散限制和巢捕食)也无法解释在几个热带森林中观察到的令人困惑的模式。拟议的研究调查了一个新的替代假设,以解释鸟类在大型栖息地斑块中的下降,该斑块有三个关键组成部分:(1)林下食虫鸟类喜欢在称为藤本植物的密集木质藤本植物中觅食;(2)有领野猪抑制藤本植物密度,以及(3)失去合适的栖息地,因此,鸟类种群与野猪密度相对应。该研究将在巴拿马中部测试这一假设的三个组成部分,在那里,重点鸟类种群和藤本植物都有所增加,而野猪密度仍然很低。参与的研究生会讲两种语言,并计划让巴拿马当地的土地所有者和管理者参与该项目。对当地社区的外联活动将包括鸟类识别和鸟类环志示范。来自科学领域通常代表性不足的群体的本科生也将通过参与这项研究进行培训。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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Thomas Sherry其他文献
Thomas Sherry的其他文献
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{{ truncateString('Thomas Sherry', 18)}}的其他基金
OPUS: The Biotic Challenge Hypothesis, an Eco-evolutionary Mechanism for Tropical Diversity
OPUS:生物挑战假说,热带多样性的生态进化机制
- 批准号:
2147043 - 财政年份:2022
- 资助金额:
$ 1.49万 - 项目类别:
Standard Grant
Conference Proposal: Support Student and Early Professional Attendance to the 2020 North American Ornithological Conference, San Juan, Puerto Rico
会议提案:支持学生和早期专业人士参加 2020 年北美鸟类学会议,波多黎各圣胡安
- 批准号:
2001973 - 财政年份:2020
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$ 1.49万 - 项目类别:
Standard Grant
LTREB Renewal: Collaborative Research: Density-Dependent and Density-Independent Effects on the Non-Breeding Season Dynamics of a Migratory Bird
LTREB 更新:合作研究:密度相关和密度无关对候鸟非繁殖季节动态的影响
- 批准号:
1242588 - 财政年份:2012
- 资助金额:
$ 1.49万 - 项目类别:
Continuing Grant
LTREB Collaborative Research: Density-dependent and Density-independent Effects on the Non-Breeding Season Dynamics of a Migratory Bird
LTREB 合作研究:密度依赖和密度无关对候鸟非繁殖季节动态的影响
- 批准号:
0717243 - 财政年份:2007
- 资助金额:
$ 1.49万 - 项目类别:
Continuing Grant
Dissertation Research: Modeling Winter Food Limitation in a Migratory Bird
论文研究:模拟候鸟冬季食物限制
- 批准号:
0408117 - 财政年份:2004
- 资助金额:
$ 1.49万 - 项目类别:
Standard Grant
Collaborative Research: Population Limitation of Neotropical Migrant Birds and the Seasonal-Interaction Hypothesis
合作研究:新热带候鸟的种群限制和季节相互作用假说
- 批准号:
0089541 - 财政年份:2001
- 资助金额:
$ 1.49万 - 项目类别:
Continuing Grant
Collaborative Research: Population Responses of Neotropical-Nearctic Migrant Birds to Human Impacted Habitats in the Winter Grounds
合作研究:新热带-近北极候鸟种群对冬季人类影响栖息地的反应
- 批准号:
9622316 - 财政年份:1996
- 资助金额:
$ 1.49万 - 项目类别:
Standard Grant
Collaborative Research: Ecology of Migratory Passerine Birds in Breeding and Wintering Areas: Demographic and Experimental Studies
合作研究:繁殖和越冬地区候鸟的生态学:人口统计和实验研究
- 批准号:
9213828 - 财政年份:1992
- 资助金额:
$ 1.49万 - 项目类别:
Standard Grant
REU: Collaborative Research: Ecology of Migratory PasserineBirds on Breeding and Wintering Areas - Demographic and Experimental Studies
REU:合作研究:迁徙雀形目鸟类在繁殖和越冬地区的生态学 - 人口统计和实验研究
- 批准号:
8907298 - 财政年份:1989
- 资助金额:
$ 1.49万 - 项目类别:
Continuing Grant
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Research on Quantum Field Theory without a Lagrangian Description
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