BIOCOMPLEXITY: Collaborative Research: Microbial and Nutrient Controls in Mangrove Ecosystems

生物复杂性：合作研究：红树林生态系统中的微生物和营养控制

• 批准号: 9981457
• 负责人: Marc Frischer
• 金额: $ 38.05万
• 依托单位: Skidaway Institute of Oceanography
• 依托单位国家: 美国
• 项目类别: Continuing grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-07-15 至 2006-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9981457&HistoricalAwards=false
• 关键词: BIOCOMPLEXITY; Collaborative; Research; Microbial; Nutrient

ABSTRACTThis project, which is being supported by the Directorate for Biological Sciences and by the Directorate for Computer and Information Science and Engineering, will fund research on mangrove forests that dominate the world's tropical and subtropical coasts, paralleling the geographical distribution of coral reefs. Ecological processes here are influenced by inputs from the land, sea, and sky, which result in extreme fluctuations of flooding, salinity, temperature, light, and nutrient availability. Mangrove-associated organisms have specialized physiological and structural adaptations that sustain them in this variable environment. Human-caused enrichment is one of the major global threats to these coastal ecosystems. Experiments show that nutrients are not uniformly distributed among or even within mangrove forests. Soil fertility can switch from nitrogen to phosphorus limitation across narrow gradients. This study will explore the relationships among physical and chemical factors, nutrients, microbes, trees, and elemental cycling on off-shore mangrove islands in Belize.We will examine the interactions between the environment and organisms to determine how changes in nutrient inputs from natural, agricultural, or urban sources might alter the delicate balance among these ecosystem components. Mathematical models will help us predict the contribution complexity makes to the ability of mangrove ecosystems to survive both natural and anthropogenic disturbances. The results of the study will help scientists understand how to better manage and conserve mangrove ecosystems and will contribute to our understanding of biocomplexity in other ecosystems.

Abstract这项项目由生物科学局和计算机和信息科学与工程局的支持，将资助主导世界热带和亚热带海岸的红树林研究，与珊瑚礁的地理分布相似。这里的生态过程受到土地，海洋和天空的投入的影响，这导致洪水，盐度，温度，光和养分的极端波动。红树林相关的生物具有专门的生理和结构适应性，可以在这种可变环境中维持它们。人为引起的富集是对这些沿海生态系统的主要全球威胁之一。实验表明，养分并不均匀分布在红树林之间。土壤肥力可以从狭窄的梯度从氮转变为磷的限制。这项研究将探讨伯利兹离岸红树林岛上的物理和化学因素，营养，微生物，树木和元素循环之间的关系。我们将研究环境与生物之间的相互作用，以确定从天然，农业或城市来源中营养输入的变化如何改变这些生态系统组成之间的微妙平衡之间。数学模型将帮助我们预测红树林生态系统能够生存自然和人为障碍的能力的贡献复杂性。该研究的结果将帮助科学家了解如何更好地管理和保护红树林生态系统，并有助于我们对其他生态系统中的生物复杂性的理解。