• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Polar biology >Late Holocene occupation of Gentoo Penguins (Pygoscelis papua) on Byers Peninsula, Livingston Island, Antarctica
【24h】

Late Holocene occupation of Gentoo Penguins (Pygoscelis papua) on Byers Peninsula, Livingston Island, Antarctica

机译：南极洲利文斯顿岛拜尔斯半岛上的Gentoo企鹅（Pygoscelis papua）的全新世晚期占领

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

We report excavations of an abandoned penguin colony on Byers Peninsula, Livingston Island, Antarctica, in austral summer 2008/2009. Nine abandoned pebble mounds were located on Devils Point, near an active Gentoo Penguin (Pygoscelis papua) colony of about 3,000 nests, at an elevation of 40-45 m above sea level. Three of the nine mounds were excavated to recover organic remains for radiocarbon and ancient DNA analyses; two additional mounds were probed to obtain tissue samples for additional dating. All radiocarbon dates were corrected for the marine-carbon reservoir effect using a AR of 700 ± 50 years. Calibrated 2-sigma ranges in calendar years before present (B.P.) on 23 samples of egg membrane and bone provided an overall range of 40-1,150 B.P., with most of the dates falling between 225 and 465 B.P. Ancient DNA analysis confirmed that the tissues recovered from these excavations represent Gentoo Penguin. One radiocarbon date from the active Gentoo Penguin colony indicated an age of 285-480 B.P. for the initiation of this current occupation and corresponding in age with most of the abandoned mounds. Although geologic evidence indicates that Byers Peninsula has been ice free for at least 3,000 years, these results indicate that penguin occupation lagged behind deglaciation by over 2,000 years. Small numbers of Chinstrap Penguins (P. antarctica) also occupy the same breeding colonies as Gentoo Penguins at Byers Peninsula, but their absence in the ancient sediments suggests that they have only recently colonized this area.
机译：我们报告在2008/2009南方夏季在南极洲利文斯顿岛的拜尔斯半岛开挖了一个废弃的企鹅殖民地。九个废弃的卵石丘位于恶魔角，靠近活跃的约有3000个巢的巴布亚企鹅（Pygoscelis papua）殖民地，海拔40-45 m。挖出了九个土墩中的三个，以回收有机残留物，用于放射性碳和古代DNA分析。探测另外两个土墩以获得用于另外的约会的组织样品。使用700±50年的AR对所有放射性碳日期进行了海洋碳储层效应的校正。在23个卵膜和骨骼样本存在之前（B.P.）历年中校准的2 sigma范围提供了40-1,150 B.P.的总范围，大多数日期在225-465 B.P.。古代DNA分析证实，从这些发掘中回收的组织代表了Gentoo企鹅。来自活跃的Gentoo企鹅群落的一个放射性碳年代表明其年龄为285-480 B.P.开始这一目前的职业，并在年龄上与大多数废弃的土墩相对应。尽管地质证据表明Byers半岛至少有3,000年没有结冰的历史，但这些结果表明，企鹅的生存落后于冰川融化了2,000多年。少数Chinstrap企鹅（P. antarctica）也占据了与Byers半岛的Gentoo企鹅相同的繁殖地，但它们在古代沉积物中的缺失表明它们只是最近才在该地区定居。

著录项

  • 来源
    《Polar biology》 |2011年第2期|p.283-290|共8页
  • 作者

    Steven D. Emslie; Kerry Baumann; Marcel van Tuinen;

  • 作者单位

    Department of Biology and Marine Biology, University of North Carolina Wilmington, 601 S. College Road, Wilmington, NC 28403, USA;

    Department of Biology and Marine Biology, University of North Carolina Wilmington, 601 S. College Road, Wilmington, NC 28403, USA;

    Department of Biology and Marine Biology, University of North Carolina Wilmington, 601 S. College Road, Wilmington, NC 28403, USA;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    gentoo penguin; pygoscelis Papua; abandoned colony; byers peninsula; ancient DNA;

    机译：gentoo企鹅巴布亚（Pygoscelis Papua）;废弃的殖民地拜尔斯半岛古代DNA;

相似文献

  • 外文文献
  • 中文文献
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