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      Global effects of soil and climate on leaf photosynthetic traits and rates : Effects of soil and climate on photosynthetic traits

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          A high-resolution data set of surface climate over global land areas

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            The fate of phosphorus during pedogenesis

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              Global patterns of plant leaf N and P in relation to temperature and latitude.

              A global data set including 5,087 observations of leaf nitrogen (N) and phosphorus (P) for 1,280 plant species at 452 sites and of associated mean climate indices demonstrates broad biogeographic patterns. In general, leaf N and P decline and the N/P ratio increases toward the equator as average temperature and growing season length increase. These patterns are similar for five dominant plant groups, coniferous trees and four angiosperm groups (grasses, herbs, shrubs, and trees). These results support the hypotheses that (i) leaf N and P increase from the tropics to the cooler and drier midlatitudes because of temperature-related plant physiological stoichiometry and biogeographical gradients in soil substrate age and then plateau or decrease at high latitudes because of cold temperature effects on biogeochemistry and (ii) the N/P ratio increases with mean temperature and toward the equator, because P is a major limiting nutrient in older tropical soils and N is the major limiting nutrient in younger temperate and high-latitude soils.
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                Author and article information

                Journal
                Global Ecology and Biogeography
                Global Ecology and Biogeography
                Wiley-Blackwell
                1466822X
                June 2015
                June 2015
                : 24
                : 6
                : 706-717
                Article
                10.1111/geb.12296
                5e21ea33-7b35-486a-9e3c-7402ef2c9863
                © 2015

                http://doi.wiley.com/10.1002/tdm_license_1.1

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