Interagency Ecological Program: Water quality, fish, and zooplankton monitoring and modeling to support the 2018 Suisun Marsh Salinity Control Gates Summer Action

In summer 2018 we used a unique water control structure in the San Francisco Estuary (SFE) to direct a managed flow pulse into Suisun Marsh, one of the largest contiguous tidal marshes on the west coast of the United States. The action was designed to increase habitat suitability for the endangered Delta Smelt Hypomesus transpacificus, a small osmerid fish endemic to the upper SFE. The approach was to operate the Suisun Marsh Salinity Control Gates (SMSCG) in conjunction with increased Sacramento River tributary inflow to direct an estimated 160 x 10^6 m3 pulse of low salinity water into Suisun Marsh during August, a critical time period for juvenile Delta Smelt rearing. This dataset includes physical and biological monitoring data collected for the action. Datasets include Delta Smelt catch from the USFWS Enhanced Delta Smelt Monitoring program, zooplankton and Microcystis abundance from the Environmental Monitoring Program, historic Delta Smelt catch from the Summer Townet Survey, Delta Outflow from the Dayflow model, extent of Delta Smelt habitat from the UnTRIM Bay-Delta model, and water quality (Salinity, Temperature, Chlorophyll, and Turibidity) collected at continuous sondes at three locations. These data are associated with the manuscript "Evaluation of a large-scale flow manipulation to the upper San Francisco Estuary: Response of habitat conditions for an endangered native fish," by Dr. Ted Sommer, et al. 2020 PLOS One, in review.2018年夏季，我们于旧金山河口（San Francisco Estuary, SFE）启用一套独特的水控结构，将调控水流脉冲引入苏森沼泽（Suisun Marsh）——该沼泽是美国西海岸连片规模最大的潮汐沼泽之一。本操作旨在提升濒危物种三角洲胡瓜鱼（Delta Smelt, *Hypomesus transpacificus*）的栖息地适宜性，该物种为上旧金山河口特有小型银汉鱼科鱼类。本次调控方案为：联合提升萨克拉门托河支流径流量，运行苏森沼泽盐度控制闸门（Suisun Marsh Salinity Control Gates, SMSCG），于幼年期三角洲胡瓜鱼育幼的关键时段8月，向苏森沼泽引入预估1.6×10⁸立方米的低盐度水流脉冲。本数据集包含为该调控行动采集的物理与生物监测数据，具体包括：美国鱼类及野生动物管理局（USFWS）增强型三角洲胡瓜鱼监测项目获取的胡瓜鱼渔获量数据、环境监测项目采集的浮游动物与微囊藻（Microcystis）丰度数据、夏季拖网调查（Summer Townet Survey）的历史三角洲胡瓜鱼渔获量数据、Dayflow模型生成的三角洲径流量数据、UnTRIM海湾-三角洲模型测算的三角洲胡瓜鱼栖息地范围，以及3个监测点位连续水质探头采集的水质数据（盐度、温度、叶绿素与浊度）。上述数据关联Ted Sommer博士等人于2020年投稿于《公共科学图书馆·综合》（PLOS One）并处于同行评审阶段的论文，其原文标题为"Evaluation of a large-scale flow manipulation to the upper San Francisco Estuary: Response of habitat conditions for an endangered native fish"。