Holocene Biogeography of Mangroves Along the Gulf of Mexico Coast: Past, Present, and Future

墨西哥湾沿岸红树林全新世生物地理学：过去、现在和未来

• 批准号: 1759715
• 负责人: Kam-biu Liu
• 金额: $ 29.93万
• 依托单位: Louisiana State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2018
• 资助国家: 美国
• 起止时间: 2018-05-01 至 2022-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1759715&HistoricalAwards=false
• 关键词: Holocene; Biogeography; Mangroves; Along; Gulf

This research project will investigate past and present environmental conditions and mangrove distributions and provide predictive assessments of the future distributions of mangroves along the Gulf of Mexico coast. Mangrove expansion in the Gulf coastal region is a recent phenomenon, and the new insights from this project will provide a more comprehensive understanding of past environmental patterns and future expansion areas based on climatic fluctuations. The project will expand knowledge regarding how feedbacks from human-environment interactions affect wetland vegetation shifts in a region characterized by increasing environmental uncertainty. Project benefits to the broader community will include a better understanding of mangrove expansion to coastal area residents and communities and proactive water resources management planning by appropriate coastal federal and state agencies. The project will support science education in local schools through collaboration with the Coastal Roots Program at Louisiana State University. The investigators will participate in workshops with Louisiana school teachers and engage them in communicating scientific knowledge about environmental changes and mangrove expansion.Mangroves play a critical role in global carbon sequestration and provide many important ecosystem services. Long-term quantitative data on the distribution and abundance of mangroves along the U.S. Gulf Coast have been largely inadequate. This project will produce high-resolution multi-proxy stratigraphic records from four critical mangrove habitats to elucidate the changing distribution of all mangrove species along the Gulf Coast over the last 2,000 years. The investigators will focus on three core questions: (1) How has the distribution and abundance of mangroves changed in response to Holocene environmental and climatic variations along the U.S Gulf Coast? (2) Which environmental variables are most likely to be responsible for controlling the spatial distribution of mangroves in the U.S? (3) What will be the northern ranges of different mangrove species by the end of the 21st century? The investigators will use a combination of palynological, X-ray fluorescence, and loss-on-ignition analytic techniques and radiocarbon dating to reconstruct the Holocene vegetation changes and sedimentary history of mangrove habitats along the U.S Gulf Coast. Cellular automata modeling techniques will be used to predict the future ranges of different mangrove species by the end of the 21st century.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.

该研究项目将调查过去和现在的环境条件和红树林分布，并对墨西哥湾沿岸红树林的未来分布进行预测评估。 海湾沿岸地区的红树林扩张是最近才出现的现象，该项目的新见解将为过去的环境模式和基于气候波动的未来扩张区域提供更全面的了解。 该项目将扩展关于人类与环境相互作用的反馈如何影响环境不确定性增加的地区的湿地植被变化的知识。 项目对更广泛社区的好处将包括更好地了解红树林向沿海地区居民和社区的扩张，以及适当的沿海联邦和州机构积极主动的水资源管理规划。 该项目将通过与路易斯安那州立大学的沿海根源计划合作，支持当地学校的科学教育。 研究人员将参加路易斯安那州学校教师的研讨会，让他们交流有关环境变化和红树林扩张的科学知识。红树林在全球碳固存中发挥着关键作用，并提供许多重要的生态系统服务。 关于美国墨西哥湾沿岸红树林分布和丰度的长期定量数据基本上不充分。 该项目将从四个重要的红树林栖息地生成高分辨率多代理地层记录，以阐明过去 2000 年来墨西哥湾沿岸所有红树林物种的分布变化。研究人员将重点关注三个核心问题：（1）美国墨西哥湾沿岸的红树林分布和丰度如何因全新世环境和气候变化而发生变化？ (2) 哪些环境变量最有可能控制美国红树林的空间分布？ (3) 到 21 世纪末，不同红树林物种的北部分布范围将是怎样？ 研究人员将结合孢粉学、X射线荧光、烧失量分析技术和放射性碳测年技术来重建美国墨西哥湾沿岸红树林栖息地的全新世植被变化和沉积历史。 元胞自动机建模技术将用于预测到 21 世纪末不同红树林物种的未来范围。该奖项反映了 NSF 的法定使命，并通过使用基金会的智力价值和更广泛的影响审查标准进行评估，被认为值得支持。

项目成果

A Geochemical Record of Late‐Holocene Hurricane Events From the Florida Everglades

佛罗里达大沼泽地全新世晚期飓风事件的地球化学记录

• DOI: 10.1029/2019wr026857
• 发表时间: 2020-08
• 期刊: Water Resources Research
• 影响因子: 5.4
• 作者: Yao, Qiang;Liu, Kam‐biu;Rodrigues, Erika;Bianchette, Thomas;Aragón‐Moreno, Alejandro Antonio;Zhang, Zhenqing
• 通讯作者: Zhang, Zhenqing

Linking backbarrier lacustrine stratigraphy with spatial dynamics of shoreline retreat in a rapidly subsiding region of the Mississippi River Delta

将后障湖地层学与密西西比河三角洲快速下沉地区海岸线退缩的空间动态联系起来

• DOI: 10.1016/j.geomorph.2021.108008
• 发表时间: 2022-01
• 期刊: Geomorphology
• 影响因子: 3.9
• 作者: Dietz, Marianne E.;Liu, Kam;Bianchette, Thomas A.;Ryu, Junghyung;Yao, Qiang
• 通讯作者: Yao, Qiang

Pre–treatment method to avoid contamination for radiocarbon dating of organic–rich coastal deposits

避免对富含有机物的沿海沉积物进行放射性碳测年污染的预处理方法

• DOI: 10.1016/j.mex.2022.101745
• 发表时间: 2022
• 期刊: MethodsX
• 影响因子: 1.9
• 作者: Yao Q;Liu KB;Rodrigues E
• 通讯作者: Rodrigues E

A palynological record of mangrove biogeography, coastal geomorphological change, and prehistoric human activities from Cedar Keys, Florida, U.S.A.

美国佛罗里达州锡达礁岛红树林生物地理学、沿海地貌变化和史前人类活动的孢粉学记录

• DOI: 10.1016/j.scitotenv.2022.160189
• 发表时间: 2023-02
• 期刊: Science of The Total Environment
• 影响因子: 9.8
• 作者: Yao, Qiang;Liu, Kam;Rodrigues, Erika;Fan, Daidu;Cohen, Marcelo
• 通讯作者: Cohen, Marcelo

Effects of the 2017–2018 winter freeze on the northern limit of the American mangroves, Mississippi River delta plain

2017年至2018年冬季冰冻对美国红树林北界密西西比河三角洲平原的影响

• DOI: 10.1016/j.geomorph.2021.107968
• 发表时间: 2021-09-24
• 期刊: Geomorphology
• 影响因子: 3.9
• 作者: M. Cohen;A. V. Souza;Kam‐biu Liu;Erika Rodrigues;Q. Yao;J. Ryu;M. Dietz;L. Pessenda;D. Rossetti
• 通讯作者: D. Rossetti