气候变化领域集成服务门户(CCPortal): Human arrival and landscape dynamics in the northern Bahamas

CCPortal

DOI	10.1073/pnas.2015764118
	Human arrival and landscape dynamics in the northern Bahamas
	Fall P.L.; Van Hengstum P.J.; Lavold-Foote L.; Donnelly J.P.; Albury N.A.; Tamalavage A.E.
发表日期	2021
ISSN	00278424
卷号	118 期号:10
英文摘要	The first Caribbean settlers were Amerindians from South America. Great Abaco and Grand Bahama, the final islands colonized in the northernmost Bahamas, were inhabited by the Lucayans when Europeans arrived. The timing of Lucayan arrival in the northern Bahamas has been uncertain because direct archaeological evidence is limited. We document Lucayan arrival on Great Abaco Island through a detailed record of vegetation, fire, and landscape dynamics based on proxy data from Blackwood Sinkhole. From about 3,000 to 1,000 y ago, forests dominated by hardwoods and palms were resilient to the effects of hurricanes and cooling sea surface temperatures. The arrival of Lucayans by about 830 CE (2σ range: 720 to 920 CE) is demarcated by increased burning and followed by landscape disturbance and a time-transgressive shift from hardwoods and palms to the modern pine forest. Considering that Lucayan settlements in the southern Bahamian archipelago are dated to about 750 CE (2σ range: 600 to 900 CE), these results demonstrate that Lucayans spread rapidly through the archipelago in less than 100 y. Although precontact landscapes would have been influenced by storms and climatic trends, the most pronounced changes follow more directly from landscape burning and ecosystem shifts after Lucayan arrival. The pine forests of Abaco declined substantially between 1500 and 1670 CE, a period of increased regional hurricane activity, coupled with fires on an already human-impacted landscape. Any future intensification of hurricane activity in the tropical North Atlantic Ocean threatens the sustainability of modern pine forests in the northern Bahamas. © 2021 National Academy of Sciences. All rights reserved.
英文关键词	Anthropogenic burning; Caribbean; Lucayan; Pollen; Vegetation change
语种	英语
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/180415
作者单位	Department of Geography and Earth Sciences, University of North Carolina at Charlotte, Charlotte, NC 28223, United States; Department of Marine and Coastal Environmental Science, Texas A&M University, Galveston, TX 77554, United States; Department of Oceanography, Texas A&M University, College Station, TX 77550, United States; Mesa, AZ 85203, United States; Department of Geology and Geophysics, Woods Hole Oceanographic Institution, Woods Hole, MA 02543, United States; National Museum of The Bahamas, Nassau, Bahamas
推荐引用方式 GB/T 7714	Fall P.L.,Van Hengstum P.J.,Lavold-Foote L.,et al. Human arrival and landscape dynamics in the northern Bahamas[J],2021,118(10).
APA	Fall P.L.,Van Hengstum P.J.,Lavold-Foote L.,Donnelly J.P.,Albury N.A.,&Tamalavage A.E..(2021).Human arrival and landscape dynamics in the northern Bahamas.Proceedings of the National Academy of Sciences of the United States of America,118(10).
MLA	Fall P.L.,et al."Human arrival and landscape dynamics in the northern Bahamas".Proceedings of the National Academy of Sciences of the United States of America 118.10(2021).