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. 2020 Oct 23;11:575194. doi: 10.3389/fmicb.2020.575194

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Copyright © 2020 Gifford, Zhao, Stemple, DeLong, Medeiros, Seim and Marchetti.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Differences in community composition across the Galápagos Archipelago. Principal components analysis (PCA) based on the recA abundances of the top 100 families in the metagenomes. Percent variance explained by each axis is shown in parentheses. Samples are colored based on year collected (2015, gold circle; 2016, blue triangle) with the site number next to the sample symbol. The bacterial family loadings are plotted with left justification. Inset: the same PCA as shown in the main plot, but with samples color-coded according to the geographic region of their collection in the archipelago.