Does calculation method affect the nutrient-addition effect on priming?

TL;DR: Fresh organic carbon inputs in soil at different depths interact with nutrient availability to control microbial activity, with topsoil C-limited and subsoil C- and N-colimited, influencing carbon balance and sequestration potential.

TL;DR: In this article , the priming effect (PE) of soil organic matter mineralization and its response to nitrogen (N) amendment are widely studied in terrestrial ecosystems, great uncertainties in their geographic patterns constrain the establishment of advanced climate-carbon (C) model.

TL;DR: In this paper , a relatively small amount of glucose is added to N-rich and P-poor tropical forest soils with N2-fixing trees, and the results showed that the addition of glucose alone (C) and addition of C together with mineral N (CN) induced positive priming effects, while the adding of C alone with mineral P (CP) and the addition (CNP) did not, suggesting that positive effect occurred through microbial P-mining, independently of the hydrolysis of organic P esters with phosphatases.

TL;DR: In this paper, the authors reveal possible causes and processes leading to priming actions using the references on agricultural ecosystems and model experiments, and summarize in Tables for positive and negative real and apparent priming effects induced after the addition of different organic and mineral substances to the soil.

TL;DR: In this paper, the authors build a conceptual model of the priming effect based on the contradictory results available in the literature adopting the concept of nutritional competition, and they postulate that priming results from the competition for energy and nutrient acquisition between the microorganisms specialized in the decomposition of fresh organic matter and those feeding on polymerised SOM.

TL;DR: It is shown that limited phosphorus and nitrogen availability are likely to jointly reduce future carbon storage by natural ecosystems during this century and if phosphorus fertilizers cannot be made increasingly accessible, the crop yields projections of the Millennium Ecosystem Assessment imply an increase of the nutrient deficit in developing regions.

TL;DR: The results suggest that basic stoichiometric decomposition theory needs to be revised and ecosystem models restructured accordingly in order to predict ecosystem carbon storage responses to anthropogenic changes in nutrient availability.