Stable isotope analysis of vegetation history and land use change at Laguna Santa Elena in southern Pacific Costa Rica
Stable isotope analysis of vegetation history and land use change at Laguna Santa Elena in southern Pacific Costa Rica
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南太平洋哥斯达黎加圣埃琳娜湖植被历史和土地利用变化的稳定同位素分析
DOI：
10.1007/s00334-019-00755-0
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发表时间：
2019
影响因子：
2.5
通讯作者：
Lane, Chad S.
中科院分区：
文献类型：
--
作者：
Kerr, Matthew T.;Horn, Sally P.;Lane, Chad S.
拉古纳圣埃莱纳（8.9290° N，82.9257° W，海拔1055米）是南太平洋哥斯达黎加迪基斯考古次区域的一个小湖。先前对圣埃莱纳沉积物芯中的花粉和木炭的分析揭示了近2,000年的植被变化、玉米种植和遗址占用历史，这与湖盆和周边地区的考古记录一致。在这里，我们提出了新的烧失量，地球化学和散装稳定碳（δ 13 C）和氮（δ 15 N）同位素分析的圣埃莱纳沉积物，补充和完善以前的重建的结果。像中美洲和加勒比海的许多湖泊一样，拉古纳圣埃莱纳在其历史上一直是人类的磁石。因此，该湖经历了人类和玉米种植在不同强度的长期植被改造。圣埃莱纳沉积物记录了迪基斯地区主要文化变迁和文化复杂性增加期间的古环境变化，这些文化变迁发生在外部强迫机制驱动的更广泛变化的间隔期间，包括终末经典干旱（TCD）、小冰期（LIA）和西班牙征服。我们对圣埃莱纳的高分辨率湖泊沉积物研究揭示了这些事件在当地规模上的细节，这些细节是通过其他手段无法获得的，包括在大约1000年玉米种植最初强化的时间。1，570 calbp（ad 380）和两个种群下降间隔与TCD一致。1，085 calbp（ad 865）和LIA开始附近的约。683 calbp（ad1267）。
Laguna Santa Elena (8.9290° N, 82.9257° W, 1055 m a.s.l.) is a small lake in the Diquís archaeological sub-region of southern Pacific Costa Rica. Previous analyses of pollen and charcoal in a sediment core from Santa Elena revealed a nearly 2,000 year history of vegetation change, maize cultivation and site occupation that is consistent with the archaeological record from the lake basin and surrounding area. Here we present the results of new loss-on-ignition, geochemical and bulk stable carbon (δ13C) and nitrogen (δ15N) isotope analyses of the Santa Elena sediments that supplement and refine the previous reconstruction. Like many lakes in Central America and the Caribbean, Laguna Santa Elena was a magnet for humans throughout its history. As a result, the lake experienced vegetation modification by humans and maize cultivation at varying intensities over a long duration. The Santa Elena sediments provide a record of palaeoenvironmental change during times of major culture change and increasing cultural complexity in the Diquís region, which occurred during intervals of broader changes driven by external forcing mechanisms, including the Terminal Classic Drought (TCD), the Little Ice Age (LIA) and the Spanish Conquest. Our high resolution lake sediment study from Santa Elena reveals details of these events at the local scale that are unobtainable by other means, including the timing of the initial intensification of maize cultivation at ca. 1,570 calbp(ad380) and two intervals of population decline coinciding with the TCD at ca. 1,085 calbp(ad865) and near the start of the LIA at ca. 683 calbp(ad1267).
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影响因子：
64.8
作者：
McLauchlan, Kendra K.;Williams, Joseph J.;Jeffers, Elizabeth S.
通讯作者：
Jeffers, Elizabeth S.
影响因子：
2.6
作者：
Iltis, HH
通讯作者：
Iltis, HH
北佩滕地区晚期古典玛雅水库的古生态记录
影响因子：
0.9
作者：
D. Wahl;Thomas M. E. Schreiner;R. Byrne;R. Hansen
通讯作者：
R. Hansen
19. 哥斯达黎加的湖泊 - Sally P. Horn 和 Kurt A. Haberyan
DOI：
10.7208/chicago/9780226121642.003.0019
发表时间：
2016
期刊：
Palaeogeography, Palaeoclimatology, Palaeoecology
影响因子：
--
作者：
S. Horn;Kurt A. Haberyan
通讯作者：
Kurt A. Haberyan
哥斯达黎加的现代花粉光谱
DOI：
10.1016/0031-0182(96)00004-1
发表时间：
1996
期刊：
Palaeogeography, Palaeoclimatology, Palaeoecology
影响因子：
--
作者：
J. Rodgers;S. Horn
通讯作者：
S. Horn