RAPID: The impact of Hurricane Harvey on water column and sediment biogeochemistry of the Mission-Aransas Estuary in south Texas

该项目涉及对哈维飓风对得克萨斯州南部Mission-Aransas河口系统的影响进行快速反应研究。飓风哈维于2017年8月25日至26日直接从该地区上空经过。由于这些沃茨是任务-阿兰萨斯国家河口研究保护区（MANERR）的所在地，研究人员有风暴前的数据历史，可以与他们将收集的数据进行比较。他们建议调查风暴通过对科帕诺湾和阿兰萨斯湾沃茨和沉积物中碳和氮循环的影响，从而对生态系统产生影响。其结果将是重要的，以了解沿海过程，无论是在一般情况下，并在应对极端事件。研究人员提出了两个假设，可以概括为：1）河流泛滥的营养盐输入将刺激河口藻华; 2）沉积物粒度分布的变化将影响沉积物氮循环。他们将在MANERR的五个全系统监测计划地点收集水样，进行营养素、色素、脂质、散装碳和碳同位素分析，并使用YSI探空仪（盐度、温度、pH值、叶绿素a、溶解氧和浊度）进行标准水质参数分析，每两周至每月一次。2017年秋季将在所有地点收集沉积物样本，并检查粒度，色素，碳和氮含量，碳同位素，色素和脂质。研究结果将结合今年早些时候收集的数据，用于检查对这一重大事件的物理，化学和生物反应。该项目将支持一名研究生研究助理和三名本科生研究人员。与公众的沟通将通过在任务阿兰萨斯NERR和得克萨斯大学海洋科学研究所完善和有效的方案发生。

This project involves rapid-response research into the effects of Hurricane Harvey on the Mission-Aransas estuary system in south Texas. Hurricane Harvey passed directly over this region on August 25-26, 2017. Because these waters are the site of the Mission-Aransas National Estuarine Research Reserve (MANERR), the investigators have a history of data from before the storm with which to compare the data they will collect. They proposed to investigate the effect of the passage of the storm on carbon and nitrogen cycling, and thus the ecosystem, in the waters and sediments of Copano Bay and Aransas Bay. Their results will be important to understanding coastal processes both in general and in response to extreme events. The investigators pose two hypotheses, which can be summarized broadly as 1) inputs of nutrients from river flooding will stimulate algal blooms in the estuary and 2) changes in sediment grain size distribution will affect sediment nitrogen cycling. They will collect water samples for nutrients, pigments, lipids, bulk carbon, and carbon isotope analyses, together with standard water quality parameters using a YSI Sonde (salinity, temperature, pH, chlorophyll a, dissolved oxygen and turbidity) at the five System Wide Monitoring Program sites of the MANERR on a biweekly to monthly basis. Sediment samples will be collected at all sites in the fall of 2017 and examined for grain size, pigments, carbon and nitrogen content, carbon isotopes, pigments, and lipids. The results will be used, in combination from data collected earlier this year, to examine physical, chemical, and biological responses to this major event. The project will support a graduate student research assistant and three undergraduate student researchers. Communication with the public will occur through well-established and effective programs at the Mission-Aransas NERR and the University of Texas Marine Science Institute.