...
首页> 外文期刊>Antarctic science >Penguin population dynamics for the past 8500 years at Gardner Island, Vestfold Hills
【24h】

Penguin population dynamics for the past 8500 years at Gardner Island, Vestfold Hills

机译:过去8500年企鹅在Vestfold Hills的Gardner岛上的活动

获取原文
获取原文并翻译 | 示例
   

获取外文期刊封面封底 >>

       

摘要

In order to reconstruct past changes in penguin populations we performed geochemical analyses on a penguin ornithogenic sediment core DG4 retrieved from a lake catchment on Gardner Island, Vestfold Hills. P, Se, F, S, As, Sr and Cu in DG4 were identified as the bio-element assemblage by R-clustering analyses on the elemental concentrations and comparisons with those in bedrock and fresh penguin guano.Factor analysis on the levels of these bio-elements in the core permitted a reconstruction of variations in historical penguin populations at Gardner Island spanning the past 8500 years. The penguin population showed significant fluctuations, reaching its highest density between 4700–2400 calibrated years before present. This coincides with evidence for a late Holocene warm period in the Vestfold Hills, similar to that associated with the late Holocene penguin optimum recorded in the Ross Sea and Antarctic Peninsula regions.
机译:为了重建企鹅种群过去的变化,我们对从鸟巢山加德纳岛的一个湖泊集水区中回收的企鹅鸟类鸟类沉积沉积物DG4进行了地球化学分析。通过R聚类分析元素浓度并将其与基岩和新鲜企鹅鸟粪中的元素含量进行比较,将DG4中的P,Se,F,S,As,Sr和Cu鉴定为生物元素组合。核心中的生物元素允许重建过去8500年以来加德纳岛的企鹅历史种群。企鹅种群显示出明显的波动,在出现之前的4700–2400校准年之间达到了最高密度。这与Vestfold Hills的全新世晚期晚期相吻合,这与在罗斯海和南极半岛地区记录的全新世晚期企鹅最佳时期相似。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号