@article{fdi:010092928, title = {{L}arge variability of soil microbial diversity and functions in an over 20-year old {E}ucalyptus grandis plantation}, author = {{B}rondani, {M}argot and {R}obin, {A}. and {M}archal, {J}. and {P}ablo, {A}nne-{L}aure and {P}ersonne, {A}. and {D}esmarais, {E}. and {C}erqueira, {F}. and {M}ah{\'e}, {F}. and {D}egrune, {F}. and {G}uillemot, {J}. and {B}rancalion, {P}. {H}. {S}. and {F}romin, {N}.}, editor = {}, language = {{ENG}}, abstract = {{T}he spatial heterogeneity in soil properties as well as in molecular and catabolic diversities of the soil microbial community were investigated by soil analyses, {I}llumina {M}i{S}eq sequencing and {M}icro{R}esp{TM} profiling, respectively, in 51 plots of a 20 year-old eucalyptus plantation in south {B}razil. {T}he relationships between these parameters were assessed to test whether small scale variation in soil properties and understory vegetation generated heterogeneity in the soil microbial community. {T}he spatial variability of soil microbial community and functioning was shown to be substantial. {A} greenness index, used as a proxy of the density of the understory biomass, explained very little of the soil microbial parameters. {V}ariability in soil properties (mainly {C} availability, p{H}) partly explained shifts in molecular and catabolic parameters of the soil microbial community. {B}acterial (and, to a lower extent, fungal) molecular parameters were the main factors explaining the catabolic capabilities of the soil microbial community. {B}ut overall, the sequencing data was of little use in explaining {C} processes in these soils, underlying the difficulty in predicting the contribution of large tree-plantations to the global {C} cycle.}, keywords = {{F}ungal community ; {B}acterial community ; {F}unctional diversity ; {C}atabolic profiles ; {U}nderstory vegetation ; {T}ropical tree plantation ; {BRESIL} ; {SAO} {PAULO}}, booktitle = {}, journal = {{A}pplied {S}oil {E}cology}, volume = {209}, numero = {}, pages = {106008 [9 p.]}, ISSN = {0929-1393}, year = {2025}, DOI = {10.1016/j.apsoil.2025.106008}, URL = {https://www.documentation.ird.fr/hor/fdi:010092928}, }