LTREB renewal: Long term population and community responses to landscape dynamics by birds in Amazonian old growth, fragmented, and secondary forest

LTREB 更新：亚马逊老林、破碎林和次生林中鸟类对景观动态的长期人口和社区反应

• 批准号: 1257340
• 负责人: Philip Stouffer
• 金额: $ 44.91万
• 依托单位: Louisiana State University Agricultural Center
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-02-01 至 2019-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1257340&HistoricalAwards=false
• 关键词: LTREB; renewal; Long; term; population

Since the 1970s, the Biological Dynamics of Forest Fragments Project, near Manaus in Amazonian Brazil, has provided a research setting that includes small patches of rainforest, active and abandoned agricultural areas, and a large expanse of undisturbed rainforest. This project builds on a 20-year study of avian population dynamics in forest fragments that has focused on how changes to the landscape have affected bird abundance, distribution, and social organization. Over the next five years, US and Brazilian researchers will examine whether or not forest birds can survive and reproduce as well in fragments and abandoned deforested areas as they do in undisturbed forest. Using passive capture, mark, and release of birds, the investigators will quantify survival, breeding activity, transience, and age-specific abundance. These data will permit the most detailed assessment to date of the value of secondary growth and fragments to a large number of understory birds. Whole-community techniques will also be used to assess species richness, biomass, and social interactions across plots. Tropical rainforests support a disproportionately high number of species. Increasing human populations and agricultural expansion in the tropics fuel deforestation, although many deforested areas are subsequently abandoned. Because of this cycle of cutting and abandonment, the long-term persistence of many tropical species will depend on their capacity to use forest fragments and regrowth forest. Results from this study will help to determine the ability of fragments and secondary growth to maintain biodiversity. The project will continue to build capacity of both Brazilian and US students through their direct involvement in the research and through the development of new field and educational materials.

自1970年代以来，森林碎片项目的生物动力学项目（在亚马逊巴西的Manaus附近）提供了一个研究环境，其中包括小雨林，活跃和废弃的农业地区，以及大量不受干扰的雨林。 该项目基于一项为期20年的森林碎片中鸟类人群动态的研究，该研究集中在景观上如何影响鸟类丰富度，分布和社会组织。在接下来的五年中，美国和巴西的研究人员将检查森林鸟类是否可以像在未受干扰的森林中一样在碎片和废弃的森林砍伐地区生存和繁殖。 使用被动捕获，标记和释放鸟类，研究人员将量化生存，繁殖活动，瞬态和年龄特异性的丰度。这些数据将允许最详细的评估，即二次生长价值和大量林下鸟类的碎片。全社区技术还将用于评估物种的丰富度，生物量和社交互动。热带雨林支持物种数量不成比例。 尽管许多被森林砍伐的地区被放弃，但在热带地区燃料森林砍伐的人口增加和农业扩张。 由于这种切割和遗弃的循环，许多热带物种的长期持久性将取决于它们使用森林碎片和再生森林的能力。 这项研究的结果将有助于确定碎片和继发生长维持生物多样性的能力。 该项目将通过直接参与研究以及开发新领域和教育材料来继续建立巴西和美国学生的能力。