Mean δ¹³C and δ¹⁵N values (solid lines) and confidence intervals (dotted lines) of fur seal whiskers.

Abstract

<p>Isotopic values were averaged by species (<i>A. gazella</i> (black) and <i>A. tropicalis</i> (grey)) and sex (males (left panels) and females (right panels)) over a time period of 4 consecutive years. Time zero that corresponds to the newly synthesized part of the whiskers appears on the right of plots.</p