Luc Abbadie

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: In this article, a negative relationship between primary production and soil carbon (C) content is found, and the authors conclude that energy available to soil microbes and microbial competition are important determinants of soil C decomposition.

TL;DR: It is argued that the priming effect acts substantially in the carbon and nutrient cycles in all ecosystems, which could provide new insights on the responses of ecosystems to anthropogenic perturbations and their feedbacks to climatic changes.

TL;DR: Grazing optimization is most likely to occur in systems with large losses of the limiting nutrient during recycling of plant detritus, or where herbivores bring nutrient from outside the ecosystem considered (which acts to reduce, or even make negative, the fraction of nutrient lost along the herbivoredetritus pathway).

TL;DR: Predicting microbial changes induced by management in grasslands requires consideration of management-plant species interactions, and changes in enzyme activity were likely largely explained by the observed changes in ammonium concentration, whereas N availability was not a major factor explaining changes in denitrification and fixation enzyme activities.