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Comment
. 2004 Jul 27;101(30):10849-50.
doi: 10.1073/pnas.0404222101. Epub 2004 Jul 19.

Global organization of terrestrial plant-nutrient interactions

Lars O Hedin  1
Affiliations
Comment

Global organization of terrestrial plant-nutrient interactions

Lars O Hedin. Proc Natl Acad Sci U S A. .
No abstract available

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Figures

Fig. 1.
Fig. 1.
Regression trends of plant N:P ratios (molar basis) as a function of absolute latitude (degrees): Reich and Oleksyn (ref. ; blue), Kerkhoff's group (green), and McGroddy et al. (ref. ; red). Line A, Reich and Oleksyn's (8) study of leaf nutrient content in 1,280 plant species from 452 locations worldwide (log N:P = 1.30985 – 0.00377 · latitude – 0.00006 · latitude2; r2 = 0.78; P < 0.005). Line B, Kerkhoff's group's study of leaf nutrient content in 1,054 plant species worldwide, binned across 16 latitudes (N:P = 49 – 0.33 · latitude; r2 = 0.55; P < 0.001). Line C, McGroddy et al.'s (9) study of foliage nutrient content across 59 undisturbed forests worldwide (N:P = 43.1 – 0.338 · latitude; r2 = 0.28; P < 0.0001). Line D, McGroddy et al.'s (9) study of litterfall nutrient content across 106 undisturbed forests worldwide (N:P = 111.1 · latitude–0.389, r2 = 0.43; P < 0.0001).
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Comment on

References

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    1. Sterner, R. W. & Elser, J. J. (2003) Ecological Stoichiometry: The Biology of Elements from Molecules to the Biosphere (Princeton Univ. Press, Princeton).

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