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Figure 1

From: Intra-Specific Latitudinal Clines in Leaf Carbon, Nitrogen, and Phosphorus and their Underlying Abiotic Correlates in Ruellia Nudiflora

Figure 1

Relationship between latitude and (A) the concentration (mg g−1 d.w.) of leaf phosphorus, (B) leaf nitrogen, (C) leaf carbon, (D) carbon to phosphorus ratio (C:P), (E) nitrogen to phosphorus ratio (N:P), and (F) carbon to nitrogen ratio (C:N) for Ruellia nudiflora populations sampled along a 5° latitudinal transect from northern Yucatan (Mexico) to southern Belize (N = 30). R2 values, P-values and predicted relationships are from simple regressions in each case. Each dot represents a population mean ± standard deviation.

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