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Variation (mean ± SE) in carbon (C) and nitrogen (N) in aboveground biomass of Spartina alterniflora from Bay Jimmy (BJ) and Catfish Lake (CL), as well as in Vermilion (V) and CP (CP) cultivars grown under common garden conditions at the study site (as per Figure 1). See Table S1 in the Supporting Information for further details on C and N measurements. Different letters inside the bars indicate significant pairwise differences according to provenance
