NTFP harvesters as citizen scientists: Validating traditional and crowdsourced knowledge on seed production of Brazil nut trees in the Peruvian Amazon.

The relation between the expected cation exchange capacity (CEC) of the soil at a tree ́s growth site and estimated seed production was not significant according to our GLMM, but nonetheless yielded a highly significant positive Spearman correlation coefficient (p<<0.001; S2 Fig ).

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