Collaborative Research: A RAPID response to Hurricane Harvey's impacts on coastal carbon cycle, metabolic balance and ocean acidification

合作研究：快速应对飓风哈维对沿海碳循环、代谢平衡和海洋酸化的影响

• 批准号: 1760747
• 负责人: John Lehrter
• 金额: $ 4.05万
• 依托单位: University of South Alabama
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2017
• 资助国家: 美国
• 起止时间: 2017-11-01 至 2019-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1760747&HistoricalAwards=false
• 关键词: Collaborative; Research; RAPID; response; Hurricane

Understanding how extreme events, like hurricanes, impact coastal ecosystems and the cycling of elements like carbon and oxygen, is important for improving our ability to predict how the global carbon cycle will respond to climate. This team of investigators, who have already been working together on understanding the carbon cycle in the Gulf of Mexico continental shelves, have important recent data against which to measure the effects of the passage of Hurricane Harvey in August, 2017. They will sample the waters and sediments of the northwestern Gulf of Mexico in September, October, and January to assess Harvey's impacts on a timescale of weeks to months. The researchers pose three specific questions: 1. Will the region become a major source of carbon dioxide to the atmosphere, releasing carbon accumulated in the bottom water and sediments, and will this potential impact be faster and greater than during normal fall and winter mixing events? Will this process acidify the surface water and for how long? 2. Will the metabolic balance be substantially pushed toward net heterotrophy as a result of the storm in comparison to other years? 3. Can the amount of material delivered or redeposited across the continental shelf by a tropical cyclone be considerably larger than that related to winter storm systems? The PIs will measure water column nutrients, oxygen, organic carbon, and inorganic carbon system parameters; determine water column and benthic metabolic and nutrient flux rates; and sediment organic matter deposition rates. They will also collect end member river samples. They will compare the immediate (mid-Sept) but limited post-hurricane data and one-month post-hurricane, more detailed data with those collected in July and April to study the impacts of the storms. they will also compare 2017-2018 seasonal data to seasonal data over the same region collected in the past (2006-2008 and 2009-2010). They will also compare the impacts of Hurricane Harvey to those of Hurricanes Katrina and Rita (2005) and Tropical Storm Cindy (June 2017). The project will involve graduate and postdoctoral research and work to communicate results to the public.

了解极端事件（如飓风，影响沿海生态系统以及碳和氧气等元素的循环）如何对提高我们预测全球碳循环对气候的反应方式的能力很重要。这支调查人员已经在了解墨西哥湾大陆货架上的碳循环方面的研究团队拥有重要的数据，以衡量2017年8月哈维飓风的影响。他们将在9月，10月，1月，1月的墨西哥西北湾的水域对Harvey的影响周期的影响下进行样品，以评估墨西哥西北湾的水平和沉积物。研究人员提出了三个具体问题：1。该地区是否会成为大气中二氧化碳的主要来源，释放出积累在底水和沉积物中的碳，并且这种潜在的影响是否比正常秋季混合事件更快，更大？这个过程会酸化地表水和多长时间吗？ 2。与其他几年相比，由于暴风雨而导致的代谢平衡会大大推向净异芽质吗？ 3。热带气旋在整个大陆架上传递或重新沉积的材料是否比与冬季风暴系统有关的材料大得多？ PI将测量水柱养分，氧气，有机碳和无机碳系统参数；确定水柱和底栖代谢和营养通量率；和沉积物有机物沉积速率。他们还将收集最终会员河样品。他们将将直接的（9月中期）但有限的赫里拉内数据和一个月后的赫里拉尼（Hurricane）和一个月的详细数据与7月和4月收集的数据进行比较，以研究风暴的影响。他们还将将2017 - 2018年季节性数据与过去收集的同一地区（2006-2008和2009-2010）的季节数据进行比较。他们还将将哈维飓风的影响与卡特里娜飓风和丽塔飓风（2005）和热带风暴辛迪（2017年6月）的影响进行比较。该项目将涉及研究生和博士后研究以及向公众传达结果的工作。

项目成果

Benthic Respiration in Hypoxic Waters Enhances Bottom Water Acidification in the Northern Gulf of Mexico

• DOI: 10.1029/2020jc016152
• 发表时间: 2020-09
• 期刊: Journal of Geophysical Research
• 作者: Hongjie Wang;J. Lehrter;K. Maiti;K. Fennel;A. Laurent;N. Rabalais;N. Hussain;Qian Li;Baoshan Chen;K. M. Scaboo;W. Cai

Modeling Spatiotemporal Patterns of Ecosystem Metabolism and Organic Carbon Dynamics Affecting Hypoxia on the Louisiana Continental Shelf

模拟影响路易斯安那大陆架缺氧的生态系统代谢和有机碳动态的时空模式

• DOI: 10.1029/2019jc015630
• 发表时间: 2020
• 期刊: Journal of Geophysical Research: Oceans
• 作者: Jarvis, Brandon M.;Lehrter, John C.;Lowe, Lisa L.;Hagy, James D.;Wan, Yongshan;Murrell, Michael C.;Ko, Dong S.;Penta, Bradley;Gould, Jr., Richard W.
• 通讯作者: Gould, Jr., Richard W.

Spring net community production and its coupling with the CO2 dynamics in the surface water of the northern Gulf of Mexico

• DOI: 10.5194/bg-16-3507-2019
• 发表时间: 2019-09-17
• 期刊: BIOGEOSCIENCES
• 影响因子: 4.9
• 作者: Jiang, Zong-Pei;Cai, Wei-Jun;Xu, Yuanyuan
• 通讯作者: Xu, Yuanyuan