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状况和红树林分布，并对墨西哥沿岸红树林的未来分布进行预测评估。 墨西哥湾沿海地区的红树林扩张是最近的现象，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领域提供更全面的了解。 该项目将扩大有关人类环境相互作用的反馈如何影响湿地植被转移的知识，其特征是增加环境不确定性。 对更广泛社区的项目益处将包括对沿海地区居民和社区的红树林扩展以及适当的沿海联邦和州机构的主动水资源管理计划的了解。 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来支持当地学校的科学教育。 调查人员将与路易斯安那学校的教师参加研讨会，并让他们参与有关环境变化和红树林扩展的科学知识。Mangroves在全球碳固存中起着至关重要的作用，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的分布和丰度的长期定量数据在很大程度上不足。 该项目将从四个关键的红树林栖息地产生高分辨率的多核地层记录，以阐明过去2000年中墨西哥湾沿岸所有红树林的分布变化。调查人员将重点关注三个核心问题：（1）针对美国墨西哥湾沿岸的全新世环境和气候变化，红树林的分布和丰度如何变化？ （2）哪些环境变量最有可能负责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范围是什么？ 研究人员将结合孢子，X射线荧光和损失命令分析技术和放射性碳的历史，以重建美国墨西哥湾沿岸的全新世植被变化和红树林栖息地的沉积历史。 蜂窝自动机建模技术将用于预测21世纪末的不同红树林物种的未来范围。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和更广泛影响的评估评估来获得支持的。

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

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

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.