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. 2013 Nov 22;280(1771):20131760. doi: 10.1098/rspb.2013.1760

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© 2013 The Authors. Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/3.0/, which permits unrestricted use, provided the original author and source are credited.

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Figure 2. — Biofilm diversity and evenness at confluences. (a) Mean richness, (b) Shannon diversity, (c) Simpson diversity, (d) Pielou evenness and (e) RLE_1,2, upstream (tributaries, yellow) and downstream (recipient streams, red) of confluences. Recipient streams (n = 34) had significantly lower Shannon diversity (p < 0.05), Simpson diversity (p < 0.05), Pielou evenness (p < 0.01) and RLE_1,2 (p < 0.05); OTU richness did not differ significantly.