There was a weak trend for communities collected from limed tree holes after the treatment started (post-liming) to grow better at pH 8.2 than at lower pH values, but this was not significant.
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Eco-evolutionary robustness of wild bacterial communities to experimental perturbation.
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The sentences
Sampling time was marginally significant: samples from after the treatment grew better than samples of the corresponding tree hole before, but in both control and limed tree holes, hence due to an uncontrolled factor affecting all tree holes rather than our treatment ( Table S4 ).