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，并对墨西哥湾沿岸沿着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的现象，该项目的新见解将提供对过去环境模式和基于气候波动的未来扩张区域的更全面了解。 该项目将扩大有关人与环境相互作用的反馈如何影响环境不确定性日益增加的地区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展，以及由适当的沿海联邦和州机构进行积极的水资源管理规划。 该项目将通过与路易斯安那州州立大学的沿海根计划合作，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，并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沿着红树林的分布和丰富程度的长期定量数据在很大程度上是不够的。 该项目将从四个关键的红树林生境中制作高分辨率多代用地层记录，以阐明过去2 000年来墨西哥湾沿岸沿着所有红树林物种分布的变化。调查人员将集中在三个核心问题：（1）红树林的分布和丰度如何变化，以响应全新世环境和气候变化沿着美国墨西哥湾沿岸？ (2)哪些环境变量最有可能控制美国红树林的空间分布？ (3)到世纪末，不同红树林物种的北方范围将是什么？ 研究人员将结合使用孢粉学、X射线荧光和烧失量分析技术以及放射性碳测年来重建美国墨西哥湾沿岸沿着全新世植被变化和红树林栖息地的沉积历史。 元胞自动机模型技术将被用于预测不同红树林物种的未来范围，到21世纪末世纪。这一奖项反映了NSF的法定使命，并已被认为是值得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的支持。

项目成果

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

• DOI: 10.1016/j.geomorph.2021.108008
• 发表时间: 2021-11-10
• 期刊: GEOMORPHOLOGY
• 影响因子: 3.9
• 作者: Dietz, Marianne E.;Liu, Kam-biu;Yao, Qiang
• 通讯作者: Yao, Qiang

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

• DOI: 10.1029/2019wr026857
• 发表时间: 2020-08
• 期刊: Water Resources Research
• 影响因子: 5.4
• 作者: Q. Yao;Kam‐biu Liu;Erika Rodrigues;T. Bianchette;A. A. Aragón-Moreno-A.;Zhenqing Zhang

Effects of Beach Nourishment Project on Coastal Geomorphology and Mangrove Dynamics in Southern Louisiana, USA

• DOI: 10.3390/rs13142688
• 发表时间: 2021-07-01
• 期刊: REMOTE SENSING
• 影响因子: 5
• 作者: Lisboa Cohen, Marcelo Cancela;Vivan de Souza, Adriana;Dietz, Marianne
• 通讯作者: Dietz, Marianne

The effects of external forcing agents on the biodiversity and species richness associated with the environmental history of Louisiana's wetlands over the late Holocene

• DOI: 10.1016/j.quascirev.2022.107865
• 发表时间: 2022-11-11
• 期刊: QUATERNARY SCIENCE REVIEWS
• 影响因子: 4
• 作者: Ryu，Junghyung;Liu，Kam-biu;McCloskey，Terrence A.
• 通讯作者: McCloskey，Terrence A.

Identifying forcing agents of environmental change and ecological response on the Mississippi River Delta, Southeastern Louisiana

• DOI: 10.1016/j.scitotenv.2021.148730
• 发表时间: 2021-07-02
• 期刊: SCIENCE OF THE TOTAL ENVIRONMENT
• 影响因子: 9.8
• 作者: Ryu, Junghyung;Liu, Kam-biu;McCloskey, Terry
• 通讯作者: McCloskey, Terry