Linking Lakes to Land: Understanding the Spatial and Temporal Aspects of Allochthonous Subsidies

连接湖泊与陆地：了解异地补贴的空间和时间方面

• 批准号: 0717148
• 负责人: Claudio Gratton
• 金额: $ 64.3万
• 依托单位: University of Wisconsin-Madison
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-09-01 至 2012-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0717148&HistoricalAwards=false
• 关键词: Linking; Lakes; Land; Understanding; Spatial

Non-Technical Abstract: C.GrattonProposal Number: DEB-0717148Proposal Title: Linking Lakes to Land: Understanding the Spatial and Temporal Aspects of Allochthonous SubsidiesOur understanding of how lakes and land are linked is poor, despite the fact that lakes are important components of many terrestrial landscapes. Most research to this point has focused on how watershed characteristics or land use affect downstream surface waters, but we know little about reverse interactions. This study will investigate lake-to-land linkages at Lake Mývatn, a nutrient-rich lake in Northern Iceland with exceptional, natural, large-scale midge (aquatic insect) outbreaks that occur every 5-7 yr. During these outbreaks, millions of midges enter surrounding terrestrial ecosystems, where they affect everything from plant productivity to herbivorous insects and their spider predators. Through a series of manipulative experiments, remote sensing analyses, and empirical modeling, this system will serve as a model to study ecological linkages at the landscape scale and will address the fundamental question of how food webs on land are influenced by energy, materials, and organisms originating from separate and distinct lake ecosystems. Broadening our studies of terrestrial communities to explicitly include interactions with other elements of the landscape will allow us to better understand and manage our environment by considering multiple habitats simultaneously. Landscapes are being altered via both natural (e.g., invasive species) and anthropogenic forces (e.g., urbanization or agriculture). Determining how these dynamic patchworks of habitats affect each other will be essential to understanding how disturbances propagate through landscapes and to better managing our terrestrial ecosystems.

非技术摘要：C. Gratton提案编号：DEB-0717148提案标题：将湖泊与陆地联系起来：了解异地沉积物的空间和时间方面尽管湖泊是许多陆地景观的重要组成部分，但我们对湖泊和陆地如何联系起来的理解很差。 到目前为止，大多数研究都集中在流域特征或土地利用如何影响下游地表沃茨，但我们对反向相互作用知之甚少。 这项研究将调查湖的土地联系，在湖Macknavatn，在北方冰岛的营养丰富的湖泊异常，自然，大规模的蚊（水生昆虫）爆发，每5-7年发生一次。 在这些爆发期间，数百万只蠓进入周围的陆地生态系统，影响从植物生产力到食草昆虫及其蜘蛛捕食者的一切。 通过一系列的操作实验，遥感分析和实证建模，该系统将作为一个模型，研究生态联系在景观尺度上，并将解决的基本问题，如何在陆地上的食物网的能量，材料和生物体的影响，从单独的和不同的湖泊生态系统。 扩大我们对陆地社区的研究，明确包括与景观其他元素的相互作用，将使我们能够通过同时考虑多种栖息地来更好地理解和管理我们的环境。 景观正在通过自然（例如，入侵物种）和人为力量（例如，城市化或农业）。 确定这些动态的栖息地斑块如何相互影响，对于了解干扰如何通过景观传播以及更好地管理我们的陆地生态系统至关重要。