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Fig. 1. Plot of the results from the two first factors in the principal component analysis (PCA) and factor analyses. TP%, relative total phosphorus retention; TPSL, specific total phosphorus load; TPSR, specific total phosphorus retention; TPCI, inlet total phosphorus concentration; TPCO, outlet total phosphorus concentration; q, specific runoff from catchment; HLR, hydraulic loading rate; DRP, dissolved reactive phosphorus; Aw to Ac ratio, wetland surface area to catchment area ratio; age, years from construction of wetland; k, first-order removal rate constant.
