@article{fdi:010072668,
  title = {{T}he priming effect generated by stoichiometric decomposition and nutrient mining in cultivated tropical soils : actors and drivers},
  author = {{R}azanamalala, {K}. and {F}anomezana, {R}. {A}. and {R}azafimbelo, {T}. and {C}hevallier, {T}iphaine and {T}rap, {J}ean and {B}lanchart, {E}ric and {B}ernard, {L}aetitia},
  editor = {},
  language = {{ENG}},
  abstract = {{T}he priming effect ({PE}) in soil, when induced by a fresh carbon supply, is believed to result from two different mechanisms, "stoichiometric decomposition" and "nutrient mining", and contributes to either long-term {SOM} stabilization or depletion. {U}nderstanding how to affect the balance between both mechanisms can provide valuable insight into agroecology, especially in {S}outhern countries where organic matter management is the primary method of fertilizing cultivated plots. {T}herefore, the objective of this study was to investigate the bacterial actors in each mechanism and the influence of three drivers in {M}alagasy {F}erralitic soils: the quality of the inducing substrate, the quality of the {SOM}, and the soil nutrient status. {T}hree different agricultural {F}erralitic soils, characterized by different levels of {NH}4 and {PO}4 availability, different {SOM} size fractionation profiles, and different bacterial communities, were amended with three types of {C}-13-labeled organic substrate (glucose, wheat residue, and rice residue) and the {PE} was measured at two incubation times (7 and 42 days). {T}he results showed that a {PE} generated by stoichiometric decomposition was mainly induced by the polymerized fraction of crop residues, especially in soil enriched by decaying plant tissues, mineral {N}, and its associated decomposers guild such as {V}errucomicrobia, alpha- and delta-{P}roteobacteria and {A}ctinomycetes. {C}onversely, when this young {SOM} pool was reduced, the {PE} was mainly generated by {N} mining, especially when induced by soluble compounds and when {N} was limiting but {P} was available.},
  keywords = {{O}rganic matter ; {M}ineralization ; {B}acteria ; {D}iversity ; {N}utrient recycling ; {MADAGASCAR}},
  booktitle = {},
  journal = {{A}pplied {S}oil {E}cology},
  volume = {126},
  numero = {},
  pages = {21--33},
  ISSN = {0929-1393},
  year = {2018},
  DOI = {10.1016/j.apsoil.2018.02.008},
  URL = {https://www.documentation.ird.fr/hor/fdi:010072668},
}