RAPID: Collaborative Research: Remineralization effects of enhanced allochthonous dissolved organic matter in the West Florida Shelf impacted by Hurricane Ian

RAPID：合作研究：受飓风伊恩影响的西佛罗里达陆架增强的异地溶解有机物的再矿化效应

• 批准号: 2309659
• 负责人: Puspa Adhikari
• 金额: $ 19.49万
• 依托单位: Florida Gulf Coast University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2023
• 资助国家: 美国
• 起止时间: 2023-01-01 至 2024-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2309659&HistoricalAwards=false
• 关键词: RAPID; Collaborative; Research; Remineralization; effects

This project will study the fate of organic matter and nutrients delivered to the West Florida Shelf during Hurricane Ian in September 2022. The study will focus on three aspects of this hurricane event: (1) how do bacteria and light alter dissolved organic matter as it is transported offshore, (2) what is the effect of this large pulse of organic matter on inorganic carbon parameters and organic alkalinity, and (3) do nutrients derived from the recycling of this organic matter stimulate harmful algal blooms. Scientists involved in this project collected samples in late August/early September 2022 and in early October 2022, representing conditions just prior to and following Hurricane Ian. They will collect samples again in January 2023. This unique set of samples will enable the team of scientists to study how extreme events influence the carbon cycle in coastal waters. The project will support scientists from groups that are traditionally underrepresented in marine science, including two early career scientists. The broader impacts include student training and outreach activities at each institution.The magnitude and frequency of tropical storms and extreme weather events is expected to increase in response to climate change. This project will add new insights about the effects of these events on the carbon cycle in a unique setting. Hurricane Ian made landfall west of Fort Myers FL on September 28, 2022 as a Category 4 storm and delivered large amounts of dissolved organic matter and nutrients to the West Florida Shelf (WFS). The investigators propose to examine whether the remineralization of allochthonous dissolved organic matter released during this extreme event alters water chemistry and ecological processes on the WFS. The project brings together an interdisciplinary team of scientists with diverse and complementary expertise including organic matter characterization, inorganic carbon measurements, remote sensing and satellite imaging analysis, and stable and radiogenic isotope measurements. The project will provide training opportunities for one graduate student, one undergraduate, and will contribute to education and outreach activities at each of the institutions.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

该项目将研究2022年9月在飓风伊恩期间向西佛罗里达州货架传递的有机物和营养物质的命运。该研究将重点介绍这一飓风事件的三个​​方面：（1）细菌和光线如何改变溶解的有机物，因为它被运输，因为它被运输，因为它被运输，（2）有机物的杂物和有机物的效果是什么，有机物是有机物的效果，有机物是什么作用。源自这种有机物的回收利用会刺激有害的藻华。参与该项目的科学家在2022年8月下旬和2022年10月初收集了样本，代表了伊恩飓风之前和之后的情况。他们将在2023年1月再次收集样品。这套独特的样本将使科学家团队能够研究极端事件如何影响沿海水域的碳循环。该项目将支持传统上在海洋科学中代表不足的团体的科学家，其中包括两名早期职业科学家。更广泛的影响包括每个机构的学生培训和外展活动。预计热带风暴和极端天气事件的大小和频率会随着气候变化的响应而增加。该项目将在独特的环境中增加有关这些事件对碳循环的影响的新见解。伊恩（Ian）飓风于2022年9月28日在迈尔斯堡（Fort Myers Fl）以西登陆为4类风暴，并向西佛罗里达州货架（WFS）运送了大量溶解的有机物和营养。研究人员建议检查在此极端事件中释放的异源溶解有机物的回忆化是否改变了WFS上的水化学和生态过程。该项目汇集了一个跨学科的科学家团队，这些科学家团队具有多种多样和互补的专业知识，包括有机物表征，无机碳测量，遥感和卫星成像分析，以及稳定的放射原性同位素测量。该项目将为一名研究生，一名本科生提供培训机会，并将在每个机构为教育和推广活动做出贡献。该奖项反映了NSF的法定任务，并被认为是值得通过基金会的知识分子优点和更广泛的影响来通过评估来支持的。