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. 2011 Aug 10;6(8):e23166. doi: 10.1371/journal.pone.0023166

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Villegas-Amtmann et al.

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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δ¹³C and δ¹⁵N values of Galapagos (GSL, Z. wollebaeki) and California (CSL, Z. californianus) sea lion females for a warm (CSL, Jul–Aug. 2005, n = 10; GSL, Mar. 2005, n = 11) and a cold (CSL, Feb–Mar. 2007, n = 11; GSL, Aug–Sep. 2006, n = 11) season.