@article{fdi:010055669,
  title = {{A}nalysis of an illustrative interaction between structural features and earthworm populations in {B}razilian ferralsols},
  author = {{B}rossard, {M}ichel and {F}regonezi, {G}.{A}.{D}. and {G}uimaraes, {M}.{D}. and {M}edina, {C}.{D}. and {P}asini, {A}. and {V}ilela, {L}. and {A}yarza, {M}.{A}.},
  editor = {},
  language = {{ENG}},
  abstract = {{F}erralsols are characterized by poorly-defined horizons, weak macrostructure and strong development of a fine granular structure comprising subangular micro-aggregates. {I}n this study, the morphological and physical modifications caused by earthworm activity in a clayey ferralsol were analysed. {A}fter describing soil structures, undisturbed samples were taken for evaluating aggregates and determining clod bulk density and particle density. {S}oil water retention properties were measured and an inventory of soil invertebrate macrofauna was created. {T}he structural and porous transformations were due to aggregates created by earthworm activity. {C}hanges in bulk density can be associated with pore modifications caused by a change in the proportions of aggregate types, and a notable reduction of total porosity was measured, tending to increase soil volume with dense aggregates. {S}tructural modifications affected the topsoil down to 0.5 m and water retention between -1 and -33 k{P}a, the principal water compartment of these soils.},
  keywords = {{O}xisol ; {L}atossol ; {S}oil structure ; {A}ggregate ; {P}ore space ; {G}eophagous earthworm ; {C}errado {B}ioma ; {BRESIL}},
  booktitle = {},
  journal = {{C}omptes {R}endus {G}eoscience},
  volume = {344},
  numero = {1},
  pages = {41--49},
  ISSN = {1631-0713},
  year = {2012},
  DOI = {10.1016/j.crte.2011.12.001},
  URL = {https://www.documentation.ird.fr/hor/fdi:010055669},
}