@article{fdi:010053094,
  title = {{I}nvasion of {P}ontoscolex corethrurus ({G}lossoscolecidae, {O}ligochaeta) in landscapes of the {A}mazonian deforestation arc},
  author = {{M}arichal, {R}. and {M}artinez, {A}. {F}. and {P}raxedes, {C}. and {R}uiz, {D}. and {C}arvajal, {A}. {F}. and {O}szwald, {J}. and {H}urtado, {M}. {D}. and {B}rown, {G}. {G}. and {G}rimaldi, {M}ichel and {D}esjardins, {T}hierry and {S}arrazin, {M}ax and {D}eca{\¨e}ns, {T}. and {V}elasquez, {E}lena and {L}avelle, {P}atrick},
  editor = {},
  language = {{ENG}},
  abstract = {{P}ontoscolex corethrurus ({G}lossoscolecidae, {O}ligochaeta) is an invasive endogeic earthworm that has colonized most land transformed by human activities in the humid tropics. {W}hen installed, populations can change soil physical properties, biogeochemical processes and microbial communities. {T}he aim of this study was to determine whether {P}. corethrurus establishment is a result of (1) a competitive exclusion of native earthworm species or (2) the exploitation of a new niche created by anthropogenic disturbance that native earthworm species cannot use. {W}e tested these hypotheses by doing a survey of earthworm communities in 270 sites that represented the diversity of land use systems encountered in two contrasted regions of the {A}mazonian arc of deforestation located in {B}razil and {C}olombia respectively. {W}hen present in forests, {P}. corethrurus had no negative effect on the native species communities that had similar (epigeic species) or even higher densities (endogeic species) in the presence of the invasive species. {T}hese results suggest the absence of competitive exclusion. {T}he first two axes of a {PCA} multivariate analysis of communities represented the densities of native species (axis 1) and {P}. corethrurus (axis 2) respectively. {T}his suggests that respective densities of the two groups respond to different conditions and that their variations are independent. {T}he density of {P}. corethrurus co-varied with soil {N} content and p{H} in {C}olombian sites while the densities of other species did not. {O}ur results thus suggest that this invasive species, unlike native species, is able to feed and develop in environments where litter resources are decreased while soils have been enriched in {C} and nutrients by deforestation and burning. {W}e discuss the reasons why some primary forests in {C}entral {A}merica have large populations of {P}. corethrurus.},
  keywords = {{I}nvasive earthworms ; {L}and transformation ; {A}mazonia},
  booktitle = {},
  journal = {{A}pplied {S}oil {E}cology},
  volume = {46},
  numero = {3},
  pages = {443--449},
  ISSN = {0929-1393},
  year = {2010},
  DOI = {10.1016/j.apsoil.2010.09.001},
  URL = {https://www.documentation.ird.fr/hor/fdi:010053094},
}