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The NMDS ordination of all samples based on Bray–Curtis dissimilarity matrix of monthly landing catches and vectors of Corbicula moreletiana (Cmor), P. ampullacea (Pamp) and P. virescens (Pvir) and their recorded landing values. The monthly mean temperature (mean.t), precipitation (mean.pre) and water levels (wl.m) were fitted using the envfit function on the NMDS ordination map. mass and inc denote the catches and values of each species, respectively. The two-digit number represents each month of the year, i.e., 01 = January etc.
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