Global patterns of phosphatase activity in natural soils

Margalef O, Sardans J, Fernández-Martínez M, Molowny-Horas R, Janssens I A, Ciais P, Goll D, Richter A, et al. (2017). Global patterns of phosphatase activity in natural soils. Scientific Reports 7 (1): p. 1337. DOI:10.1038/s41598-017-01418-8.

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Project: Effects of phosphorus limitations on Life, Earth system and Society (IMBALANCE-P, FP7 610028)

Abstract

Soil phosphatase levels strongly control the biotic pathways of phosphorus (P), an essential element for life, which is often limiting in terrestrial ecosystems. We investigated the influence of climatic and soil traits on phosphatase activity in terrestrial systems using metadata analysis from published studies. This is the first analysis of global measurements of phosphatase in natural soils. Our results suggest that organic P (Porg), rather than available P, is the most important P fraction in predicting phosphatase activity. Structural equation modeling using soil total nitrogen (TN), mean annual precipitation, mean annual temperature, thermal amplitude and total soil carbon as most available predictor variables explained up to 50% of the spatial variance in phosphatase activity. In this analysis, Porg could not be tested and among the rest of available variables, TN was the most important factor explaining the observed spatial gradients in phosphatase activity. On the other hand, phosphatase activity was also found to be associated with climatic conditions and soil type across different biomes worldwide. The close association among different predictors like Porg, TN and precipitation suggest that P recycling is driven by a broad scale pattern of ecosystem productivity capacity.

Item Type: Article
Research Programs: Ecosystems Services and Management (ESM)
Depositing User: Romeo Molina
Date Deposited: 17 May 2017 08:27
Last Modified: 17 May 2017 08:42
URI: http://pure.iiasa.ac.at/14605

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