Human arrival and landscape dynamics in the northern Bahamas.
Human arrival and landscape dynamics in the northern Bahamas.
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DOI：
10.1073/pnas.2015764118
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发表时间：
2021-03-09
影响因子：
11.1
通讯作者：
Tamalavage AE
中科院分区：
文献类型：
--
作者：
Fall PL;van Hengstum PJ;Lavold-Foote L;Donnelly JP;Albury NA;Tamalavage AE
美洲印第安人迁徙巴哈马群岛的口述历史在公元1492年哥伦布到达和16世纪初卢卡扬人被奴役后丢失。卢卡亚人遇到了独特的先于人类的爬行动物主导的陆地食物网(即乌龟和鳄鱼)，其棕榈林和硬木森林对区域海洋降温和飓风扰动具有弹性。新的证据表明，卢卡扬人在公元前830年左右到达巴哈马北部，在不到100年的时间里迅速扩张到整个巴哈马群岛。随后的燃烧导致爬行动物灭绝，热源松林占领了大阿巴科岛。复杂的扰动，包括对未来飓风加剧的预测，可能会继续改变巴哈马的生态系统，特别是松林，它们的弹性不如接触前的热带阔叶木生态系统。第一批加勒比海定居者是来自南美洲的美洲印第安人。大阿巴科和大巴哈马是巴哈马最北端的最后两个殖民岛屿，当欧洲人到达时，卢卡伊人居住在这里。卢卡扬人到达巴哈马北部的时间一直不确定，因为直接的考古证据有限。我们根据Blackwood Sinkhole的代理数据，通过对植被、火灾和景观动态的详细记录，记录了卢卡扬人到达大阿巴科岛的情况。从大约3,000年前到1,000年前，以硬木和棕榈树为主的森林对飓风和冷却的海面温度的影响具有弹性。公元830年左右(2σ范围：公元720年至920年)，卢卡延人的到来以燃烧增加为界，随后是景观干扰和从硬木和棕榈树到现代松林的时间超越性转移。考虑到巴哈马群岛南部的卢卡扬人聚居地的年代约为公元750年(2σ范围：公元600年至900年)，这些结果表明卢卡人在不到100年的时间内迅速传播到整个群岛。尽管接触前的地形可能会受到风暴和气候趋势的影响，但最显著的变化更直接地来自卢卡扬人到达后的景观燃烧和生态系统变化。阿巴科的松林在公元1500年至1670年间大幅下降，这是一个地区飓风活动增加的时期，加上已经受到人类影响的景观上的火灾。热带北大西洋未来飓风活动的任何加剧都会威胁巴哈马北部现代松林的可持续性。
The oral history for Amerindian migration through The Bahamas was lost after Columbus’s arrival in 1492 CE and Lucayan enslavement in the early sixteenth century. The Lucayans encountered unique prehuman reptile-dominated terrestrial food webs (i.e., tortoise and crocodile), with palm and hardwood forests that were resilient to regional oceanographic cooling and hurricane perturbations. New evidence indicates that Lucayans arrived in the northern Bahamas by about 830 CE after expanding rapidly throughout The Bahamas in less than 100 y. Following subsequent burning, reptiles were extirpated, and pyrogenic pine forests took over Great Abaco Island. Compounded perturbations, including forecasts of future hurricane intensification, may continue to alter Bahamian ecosystems, particularly pine forests, which are less resilient than precontact tropical hardwood ecosystems. 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.
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影响因子：
4.6
作者：
Argiriadis E;Battistel D;McWethy DB;Vecchiato M;Kirchgeorg T;Kehrwald NM;Whitlock C;Wilmshurst JM;Barbante C
通讯作者：
Barbante C
影响因子：
56.9
作者：
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通讯作者：
Keigwin, LD
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56.9
作者：
deMenocal, P;Ortiz, J;Sarnthein, M
通讯作者：
Sarnthein, M
影响因子：
1.3
作者：
BERMAN, MJ;GNIVECKI, PL
通讯作者：
GNIVECKI, PL
影响因子：
64.8
作者：
Fernandes DM;Sirak KA;Ringbauer H;Sedig J;Rohland N;Cheronet O;Mah M;Mallick S;Olalde I;Culleton BJ;Adamski N;Bernardos R;Bravo G;Broomandkhoshbacht N;Callan K;Candilio F;Demetz L;Carlson KSD;Eccles L;Freilich S;George RJ;Lawson AM;Mandl K;Marzaioli F;McCool WC;Oppenheimer J;Özdogan KT;Schattke C;Schmidt R;Stewardson K;Terrasi F;Zalzala F;Antúnez CA;Canosa EV;Colten R;Cucina A;Genchi F;Kraan C;La Pastina F;Lucci M;Maggiolo MV;Marcheco-Teruel B;Maria CT;Martínez C;París I;Pateman M;Simms TM;Sivoli CG;Vilar M;Kennett DJ;Keegan WF;Coppa A;Lipson M;Pinhasi R;Reich D
通讯作者：
Reich D