||Mercury concentrations in primary feathers reflect pollutant exposure in discrete non-breeding grounds used by Short-tailed Shearwaters
Watanuki, Yutaka ,
Yamamoto, Takashi ,
Yamashita, Ai ,
Ishii, Chihiro ,
Ikenaka, Yoshinori ,
Nakayama, Shouta M. M. Ishizuka, Mayumi ,
Suzuki, Yuya Niizuma, Yasuaki ,
Meathrel, C. E.Phillips, R. A.
850 , 2015-07 , Springer
We measured mercury concentrations ([Hg]) and nitrogen stable isotope ratios (delta N-15) in the primary feathers of Short-tailed Shearwaters (Puffinus tenuirostris) that were tracked year-round. The [Hg] were highest in 14 birds that used the Okhotsk and northern Japan Seas during the non-breeding period (2.5 +/- A 1.4 mu g/g), lowest in nine birds that used the eastern Bering Sea (0.8 +/- A 0.2 mu g/g), and intermediate in five birds that used both regions (1.0 +/- A 0.5 mu g/g), with no effects of delta N-15. The results illustrate that samples from seabirds can provide a useful means of monitoring pollution at a large spatial scale.