Radioisotope dates and carbon (δ13C) and nitrogen (δ15N) stable isotope values from modern and mummified Adélie Penguin chick carcasses and tissue from the Ross Sea, Antarctica

Abstract: This data set contains measurements of carbon (δ13C) and nitrogen (δ15N) stable isotope values of feather, skin, bone, and toenail samples of mummified Adélie penguin chick remains excavated from multiple sites around the Ross Sea region of Antarctica between 2004 and 2016, as well as the same measurements for modern Adélie chicks collected from the surface of Cape Hallett and Adelie Cove in January 2016. Stable isotope analyses were conducted using an elemental analyzer coupled to a continuous flow stable isotope ratio mass spectrometer. Where possible, accelerator Mass Spectrometry (AMS) radiocarbon dates on selected mummy tissues were completed at the Rafter Radiocarbon Laboratory, New Zealand (NZA), Beta Analytic, Inc. (Beta), the University of Georgia Center for Applied Isotope Studies (UGAMS), and Woods Hole National Ocean Sciences Accelerator Mass Spectrometry (NOSAMS) facility. All dates were corrected for the marine carbon reservoir effect and calibrated to calendar years before present (cal years BP) using a ΔR of 750 ± 50 years and the MARINE13 calibration curve in Calib 7.0 (2σ range).
The data set also includes excavation/collection site names and latitude/longitude, date of excavation/collection, tissue used for radiocarbon dating, and carbon to nitrogen ratios. Details of the data set and all relevant methods are provided in Kristan et. al., 2019.

摘要：本数据集包含2004至2016年间从南极罗斯海区域多个遗址发掘出土的木乃伊化阿德利企鹅（Adélie penguin）雏鸟遗骸的羽毛、皮肤、骨骼和趾甲样本的碳同位素δ¹³C与氮同位素δ¹⁵N稳定同位素比值测定数据，同时包含2016年1月从哈勒特角（Cape Hallett）与阿德利湾（Adelie Cove）地表采集的现代阿德利企鹅雏鸟的同类测定数据。稳定同位素分析采用元素分析仪与连续流稳定同位素比值质谱仪联用的方法完成。在可行情况下，针对选定的木乃伊组织样本的加速器质谱（Accelerator Mass Spectrometry, AMS）放射性碳定年工作分别在新西兰拉夫特放射性碳实验室（NZA）、Beta分析公司（Beta）、佐治亚大学应用同位素研究中心（UGAMS）以及伍兹霍尔国家海洋科学加速器质谱（NOSAMS）实验室完成。所有测年结果均针对海洋碳库效应进行校正，并采用Calib 7.0软件中的MARINE13校正曲线，以ΔR=750±50年的参数校正为距今年份日历年龄（cal years BP），校正范围为2σ。
本数据集还包含发掘/采集地点名称与经纬度、发掘/采集日期、用于放射性碳定年的组织样本类型，以及碳氮比值。本数据集及所有相关方法的详细信息参见Kristan等人2019年的研究成果。