@article{fdi:010064233, title = {{S}oil organic matter quality, structure and activity of the denitrifiers community as influenced by decaying mulched crop residues}, author = {{D}ieng, {A}. and {B}audoin, {E}. and {T}hioulouse, {J}. and {B}runet, {D}idier and {T}oucet, {J}o{\¨e}le and {S}ylla, {S}. {N}. and {B}rauman, {A}lain}, editor = {}, language = {{ENG}}, abstract = {{O}ur experiment evaluated the effect of maize and peanut mulched residues upon soil organic matter and denitrifying community over a five-week incubation in soil microcosms. {S}oil organic matter under peanut and maize debris contrasted in biochemical quality throughout incubation, despite identical soil {C} contents that were significantly increased by both organic amendments. {M}oreover, only soluble extracts originating from the peanut treated soils could significantly fuel semi-potential denitrification. {A}ccordingly, the composition of the nir{K} and nos{Z} communities was also specifically affected by mulch type, and the strongest impact was registered within the nos{Z} gene-bearing denitrifiers under peanut residues. {R}esidue enriched soils displayed temporal patterns of potential denitrification activity that were also dependant on residue type. {T}he highest overall emission rates were recorded with soils under maize mulch but they were not mirrored by direct {N}2{O} contents of the microcosm's headspace. {O}verall, both soil organic matter and denitrifiers community changes were conditioned throughout the decomposition kinetics by the original quality of mulched crop residues. {H}owever, the denitrification activity was decoupled both from the composition of the denitrifying community and from the soil organic matter quality.}, keywords = {soil denitrification ; mulched crop residues ; dissolved organic matter ; nitrous oxide ; {SENEGAL}}, booktitle = {}, journal = {{A}pplied {E}cology and {E}nvironmental {R}esearch}, volume = {13}, numero = {3}, pages = {655--675}, ISSN = {1589-1623}, year = {2015}, DOI = {10.15666/aeer/1303_655675}, URL = {https://www.documentation.ird.fr/hor/fdi:010064233}, }