@article{fdi:010040648,
  title = {{E}arthworm activity affects soil aggregation and organic matter dynamics according to the quality and localization of crop residues - {A}n experimental study ({M}adagascar)},
  author = {{C}oq, {S}ylvain and {B}arth{\`e}s, {B}ernard and {O}liver, {R}. and {R}abary, {B}. and {B}lanchart, {E}ric},
  editor = {},
  language = {{ENG}},
  abstract = {{S}oil organic matter ({SOM}) plays a central role in the functioning of ecosystems, and is beneficial from agronomic and from environmental point of view. {A}lternative cultural systems, like direct seeding mulch-based cropping ({DMC}) systems, enhance carbon ({C}) sequestration in agricultural soils and lead to an increase in soil macrofauna. {T}his study aimed at evaluating in field mesocosms the effects of earthworms on {SOM} dynamics and aggregation, as influenced by residue quality and management. {I}n the highlands of {M}adagascar, buckets were filled with 2 mm-sieved clayey {I}nceptisol. {T}he effects of earthworm addition ({P}ontoscolex corethrurus), residue addition (rice, soybean, and no addition), and localization of the residues (mulched or buried) were studied. {A}fter 5 months, soil from mesocosms with earthworms had significantly lower {C} concentration and higher proportion of large water-stable macroaggregates (>2000 mu m) than those without earthworms, because of the production of large macroaggregates by earthworms. {E}arthworm effect on soil aggregation was greater with rice than with soybean residues. {C}asts (extracted from mesocosms with earthworms) were slightly enriched in {C} and showed significantly higher mineralization than the non-ingested soil ({NIS}), showing that at the time scale of our study, the carbon contained in the casts was not protected against mineralization. {N}o difference in microbial biomass was found between casts and {NIS}. {C}omplementary investigations are necessary to assess long-term effects of earthworm addition on {SOM} dynamics, the conditions of occurrence of physical protection, and the impact of earthworms on the structure of the microbial community.},
  keywords = {{P}ontoscolex corethrurus ; carbon mineralization ; carbon protection ; microbial biomass ; residue management ; direct seeding mulch based cropping systems ; {MADAGASCAR}},
  booktitle = {},
  journal = {{S}oil {B}iology and {B}iochemistry},
  volume = {39},
  numero = {8},
  pages = {2119--2128},
  ISSN = {0038-0717},
  year = {2007},
  DOI = {10.1016/j.soilbio.2007.03.019},
  URL = {https://www.documentation.ird.fr/hor/fdi:010040648},
}