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. 2013 Apr 25;8(4):e62528. doi: 10.1371/journal.pone.0062528

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© 2013 Dyer 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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(A) Mean alfalfa biomass (±1 SE) under different treatments; the wasp icon indicates the parasitoid addition treatments. There was a significant effect of CO₂ on alfalfa biomass; F_1,195 = 10.30, P<0.01. (B) The interaction between CO₂ and parasitoid treatment (Psit); F_1,195 = 8.02, P<0.01. (C) The interaction between temperature and parasitoid treatment; F_1,195 = 51.57, P<0.001.