Radiocarbon in otoliths of yelloweye rockfish (Sebasfes ruberrimus): A reference time series for the coastal waters of southeast Alaska

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Kerr, L. A., Andrews, A. H., Frantz, B. R., Coale, K. H., Brown, T. A., & Cailliet, G. M. (2004). Radiocarbon in otoliths of yelloweye rockfish (Sebasfes ruberrimus): A reference time series for the coastal waters of southeast Alaska. Canadian Journal of Fisheries and Aquatic Sciences, 61(3), 443-451. doi:10.1139/f04-009
Metadata
TitleRadiocarbon in otoliths of yelloweye rockfish (Sebasfes ruberrimus): A reference time series for the coastal waters of southeast Alaska
AuthorsA. Kerr, H. Andrews, R. Frantz, H. Coale, A. Brown, M. Cailliet
AbstractAtmospheric testing of thermonuclear devices during the 1950s and 1960s created a global radiocarbon (14C) signal that has provided a useful tracer and chronological marker in oceanic systems and organisms. The bomb-generated 14C signal retained in fish otoliths can be used as a time-specific recorder of the 14C present in ambient seawater, making it a useful tool in age validation of fishes. The goal of this study was to determine 14C 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 14C time series (1940-1990) for these waters. The initial rise of 14C occurred in 1958 and 14C levels rose to peak values (60-70‰) between 1966 and 1971, with a subsequent declining trend through the end of the record in 1990 (-3.2‰). In addition, the 14C data confirmed the longevity of the yelloweye rockfish to a minimum of 44 years and strongly support higher age estimates. This 14C time series will be useful for the interpretation of 14C accreted in biological samples from these waters.
JournalCanadian Journal of Fisheries and Aquatic Sciences
Date2004
Volume61
Issue3
Start page443
End page451
ISSN0706652X
Subjectsage determination, carbon isotope, coastal water, fish, otolith, time series, Alaska, North America, United States, Pisces, Sebastes, Sebastes ruberrimus
NoteCited By (since 1996):24, CODEN: CJFSD

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