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. 2004 Jun 22;101(30):11001–11006. doi: 10.1073/pnas.0403588101

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Copyright © 2004, The National Academy of Sciences

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Fig. 4. — Leaf N, P, and N/P in relation to MAT for five genera are shown. The regression fits were as follows: Acer, for N (r² = 0.06, P = 0.05, n = 70), P (r² = 0.39, P < 0.0001, n = 43), and N/P(r² = 0.54, P < 0.0001, n = 40); Betula, for N (r² = 0.16, P < 0.0001, n = 86), P (r² = 0.04, P = 0.09, n = 74), and N/P(r² = 0.21, P < 0.0001, n = 71); Calamagrostis, for N (r² = 0.10, P = 0.07, n = 33), P (r² = 0.69, P < 0.0001, n = 33), and N/P(r² = 0.57, P < 0.0001, n = 33); Larix, for N (r² = 0.07, P = 0.005, n = 109), P (r² = 0.22, P < 0.0001, n = 81), and N/P(r² = 0.34, P < 0.0001, n = 80); and Vaccinium, for N (r² = 0.23, P = 0.002, n = 50), P (r² = 0.44, P < 0.0001, n = 47), and for N/P(r² = 0.42, P < 0.0001, n = 45).