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. 2014 May 9;9(5):e96274. doi: 10.1371/journal.pone.0096274

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© 2014 Tomaru 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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Refer to Table 1 for sample details. Surface (A) and bottom (B) samples, with surface seawater samples (SW01, SW02, SW03) included for comparison. Surface samples (A): seawater series (SW), closed circles; ballast-water (BW) series before mid-ocean exchange, open triangles; BW series after mid-ocean exchange, closed triangles. Bottom samples (B): seawater series (SW; surface only), closed circles; BW series before mid-ocean exchange, open inverted triangles; BW series after mid-ocean exchange, closed inverted triangles.