SGER: Effects of a Major Flood on Secondary Production of Zooplankton in the Ohio River: Implications for Ecosystem Theory and River Management

SGER：一次大洪水对俄亥俄河浮游动物二次生产的影响：对生态系统理论和河流管理的影响

• 批准号: 9714944
• 负责人: James Thorp
• 金额: --
• 依托单位: University of Louisville Research Foundation Inc
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-08-15 至 1998-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9714944&HistoricalAwards=false
• 关键词: SGER; Effects; Major; Flood; Secondary

ABSTRACT 97-14944 Thorp SGER: Effects of a major flood on secondary production of zooplankton in the Ohio River: Implications for ecosystem theory and river management. In March, 1997, the Ohio River valley experienced its worst flooding since 1964 (a 100+ year flood). This research will consider the effects of this large-river flood in the context of current theoretical models that have never been empirically tested in the temperate zone. The investigators will study the influence of flood events on zooplankton productivity and the source of nutrients to the river food web. The relative contribution of nutrients from upstream reaches as opposed to the floodplain will be measured. Current management strategies for large rivers and their floodplains assume that a model developed in the tropics (the Flood Pulse Concept) is applicable to temperate rivers. This model predicts that most riverine animal biomass derives from production within the floodplain and not from downstream transport of organic matter produced elsewhere in the basin. If this model is not applicable to large temperate rivers, this research will have very broad-reaching implications.

摘要：大洪水对俄亥俄河浮游动物次生生产的影响：生态系统理论和河流管理的启示。1997年3月，俄亥俄河流域经历了1964年以来最严重的洪水（100多年来的一次洪水）。这项研究将在目前的理论模型背景下考虑这种大河洪水的影响，这些模型从未在温带地区进行过实证检验。调查人员将研究洪水事件对浮游动物生产力和河流食物网营养来源的影响。将测量来自上游河段与洪泛区的营养物质的相对贡献。目前大河及其洪泛平原的管理策略假设在热带地区开发的模型（洪水脉冲概念）适用于温带河流。该模型预测，大多数河流动物生物量来自洪泛区内的生产，而不是来自盆地其他地方产生的有机物的下游运输。如果该模型不适用于大型温带河流，则该研究将具有非常广泛的意义。