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Principal components (PCs) representing the environmental gradients encountered in Maryland (closed circles) and Delaware (open circles) in this study in surface waters (A) and bottom waters (B). Abbreviations: S and Sw, surface water; B and Bw, bottom water; Chla, chlorophyll a; do, dissolved oxygen; temp, temperature; sal, salinity; tur, turbidity; MD, Maryland; DE, Delaware.
