Using the Tools of Conservation Paleobiology to Assess the Impact of the Engineered Spring-Flood of the Colorado River

利用保护古生物学工具评估科罗拉多河工程春季洪水的影响

• 批准号: 1420978
• 负责人: Gregory Dietl
• 金额: $ 1.62万
• 依托单位: Paleontological Research Institute
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2014
• 资助国家: 美国
• 起止时间: 2014-03-01 至 2016-02-29
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1420978&HistoricalAwards=false
• 关键词: Using; Tools; Conservation; Paleobiology; Assess

Using the Tools of Conservation Paleobiology to Assess the Impact of the Engineered Spring-Flood of the Colorado RiverByGregory P. Dietl, Paleontological Research Institute, EAR-1420978ABSTRACTThe over allocation of the Colorado River's water has led to the ecological devastation of its delta and lowermost channel. The Colorado River annually delivered over fifteen million acre-feet (~1.85x1010 m3) of water to its delta but in recent years that number has been zero. In 2012, via a bi-national agreement known as Minute 319, environmental pulse flows equal to approximately 1% of the natural annual river discharge were negotiated by the United States and Mexico to be released over a five-year trial period. While this engineered environmental flow has the potential to be a restoration success story, there is a crucial gap in our knowledge: no studies on the ecology of the molluscan community in the lowermost channel of the river are available to provide a benchmark for evaluating the success of this restoration effort. The first pulse will be released in the early spring of 2014, providing a small window in which to establish a baseline for current conditions. This proposal thus seeks support to use a relatively simple community-based approach - comparison of molluscan living and time-averaged death assemblages - developed by conservation paleobiologists to establish a baseline. The samples collected will provide a unique perspective on the composition of the pre-pulse-flow community that is not available from any other source, which will allow the asking of future questions about the success of the pulse flows.

使用保护古生物学工具来评估科罗拉多州Riverbygregory P. Dietl的工程弹簧，EAR-1420978ABSTRACT，对科罗拉多河水的分配而导致其三角洲和最低通道的生态破坏。科罗拉多河每年将超过1500万英亩英尺（〜1.85x1010 m3）的水交付到其三角洲，但近年来，该数字为零。在2012年，通过一项被称为Mouner 319的双国协议，美国和墨西哥协商了约1％的自然河流排放的环境脉冲流，将在五年试验期间发布。 尽管这种工程的环境流有可能成为恢复成功的故事，但我们的知识存在着一个关键的差距：在河流最低渠道的软体动物社区的生态学上没有研究为评估这种恢复工作的成功提供基准。第一个脉冲将于2014年初释放，提供一个小窗口，在该窗口中为当前条件建立基线。 因此，该提案寻求支持使用相对简单的基于社区的方法 - 由保护古生物学家开发的，对软体动物生活和时间平均死亡组合进行比较来建立基准。收集的样本将提供有关脉冲流前社区组成的独特视角，该视角从任何其他来源都无法获得，这将允许对未来的问题提出有关脉搏流成功的问题。