Radiocarbon in otoliths of yelloweye rockfish (Sebastes ruberrimus):: a reference time series for the coastal waters of southeast Alaska
Radiocarbon in otoliths of yelloweye rockfish (Sebastes ruberrimus):: a reference time series for the coastal waters of southeast Alaska
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DOI：
10.1139/f04-009
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发表时间：
2004-03-01
影响因子：
2.4
通讯作者：
Cailliet, GM
中科院分区：
文献类型：
--
作者：
Kerr, LA;Andrews, AH;Cailliet, GM
20 世纪 50 年代和 1960 年代热核装置的大气测试产生了全球放射性碳 ((14)C) 信号，为海洋系统和生物体提供了有用的示踪剂和年代标记。保留在鱼类耳石中的炸弹产生的 (14)C 信号可用作周围海水中存在的 (14)C 的时间特定记录器，使其成为鱼类年龄验证的有用工具。本研究的目的是确定经年龄验证的黄眼石斑鱼 (Sebastes ruberrimus) 耳石中的 (14)C，以建立阿拉斯加东南部沿海水域的参考时间序列。将 43 条黄眼石斑鱼耳石生长第一年的放射性碳值与估计出生年份进行绘制，得出这些水域的 (14)C 时间序列（1940-1990 年）。 (14)C 的首次上升发生在 1958 年，(14)C 水平在 1966 年至 1971 年间升至峰值 (60-70e)，随后呈下降趋势，直至 1990 年记录结束 (-3.2e)。此外，(14)C 数据证实黄眼石斑鱼的寿命至少为 44 年，有力支持了更高的年龄估计。该 (14)C 时间序列将有助于解释这些水域生物样品中积累的 (14)C。
Atmospheric testing of thermonuclear devices during the 1950s and 1960s created a global radiocarbon ((14)C) signal that has provided a useful tracer and chronological marker in oceanic systems and organisms. The bomb-generated (14)C signal retained in fish otoliths can be used as a time-specific recorder of the (14)C present in ambient seawater, making it a useful tool in age validation of fishes. The goal of this study was to determine (14)C in otoliths of the age-validated yelloweye rockfish (Sebastes ruberrimus) to establish a reference time series for the coastal waters of southeast Alaska. Radiocarbon values from the first year's growth of 43 yelloweye rockfish otoliths plotted against estimated birth year produced a (14)C time series (1940-1990) for these waters. The initial rise of (14)C occurred in 1958 and (14)C levels rose to peak values (60-70e) between 1966 and 1971, with a subsequent declining trend through the end of the record in 1990 (-3.2e). In addition, the (14)C data confirmed the longevity of the yelloweye rockfish to a minimum of 44 years and strongly support higher age estimates. This (14)C time series will be useful for the interpretation of (14)C accreted in biological samples from these waters.