ABSTRACT:
This study established the frst baseline of changing elemental
concentrations in bowhead whale baleen over time (1958– 1999). From previously published stable isotope data, year, season (summer or winter), and location (Beaufort or Bering/ Chukchi seas) were attributed to each sample. Thirteen elements (Al, Cd, Co, Cr,
Cu, Fe, Hg, Mn, Ni, Pb, Se, V, Zn) in baleen from nine subsistence-harvested bowhead whales (n=138) were detected. Al, Cu, and Fe were the highest concentrations while Cd and V were among the lowest. Our data supports absorption as the main route of exposure
to environmental elements rather than biomagnifcation due to bowhead whales’ low trophic position. A linear mixed-efects model confrmed most elements’ concentrations increased with time, while location and sex were insignifcant explanatory factors. These
temporal fuctuations were most likely a product of environmental changes due to a warming climate and human activities.
Regards,
Amy C. Hirons
Amy C. Hirons, PhD
Associate Professor
Halmos College of Arts and Sciences and Guy Harvey Oceanographic Center
Nova Southeastern University
8000 North Ocean Drive
Dania Beach, FL 33004
(o) 954-262-3620 (OC)
Pronouns: she, her(s)
https://works.bepress.com/amy-hirons/about/
