@article{fdi:010064019,
  title = {{C}ontrasting impacts of grass species on nitrogen cycling in a grazed {S}udanian savanna},
  author = {{Y}e, {L}. and {A}bbadie, {L}uc and {B}ardoux, {G}. and {L}ata, {J}. {C}. and {N}acro, {H}. {B}. and {M}asse, {D}ominique and de {P}arseval, {H}. and {B}arot, {S}{\'e}bastien},
  editor = {},
  language = {{ENG}},
  abstract = {{W}e investigated the impact of perennial and annuals grass species on nitrogen cycling in a {S}udanian savanna of {B}urkina {F}aso. {W}e also analysed how the local context in terms of grazing and soil properties modifies these impacts. {W}e selected four plots differing both by the intensity of grazing by cattle and soil depth, and used soil and grass biomass {N}-15 as integrative indicators of {N} cycle. {I}f perennials are able to foster a more efficient nitrogen cycling there should be lower {N}-15 abundances in their biomass and soil. {I}f soil depth and cattle pressure significantly modify nitrogen fluxes, soil depth and cattle pressure should influence {N}-15 signatures. {O}ur results suggest that perennial grasses are more conservative for nitrogen (inhibition of nitrification, less leaching via a perennial root system, slower cycling). {T}he increase in leaf delta {N}-15 with {N} concentration is steeper in {L}oudetia togoensis than in the three other grasses. {N}o significant difference was found between the {N}-15 signatures of the four plots. {O}ur results on {N}-15 signatures and the fact that perennial grasses are much more abundant in the plots that are less grazed and have deeper soils, confirm that the switch from perennial to annual grasses is linked to a degradation in soil fertility and pasture quality. {T}his suggests that {N}-15 signatures can be used as indicators of fertility.},
  keywords = {{N}-15 ; {N}itrogen cycling ; {S}avanna ; {P}erennial grass ; {A}nnual grass ; {H}erbivore ; {B}urkina {F}aso ; {BURKINA} {FASO} ; {ZONE} {SOUDANNIENNE}},
  booktitle = {},
  journal = {{A}cta {O}ecologica-{I}nternational {J}ournal of {E}cology},
  volume = {63},
  numero = {},
  pages = {8--15},
  ISSN = {1146-609{X}},
  year = {2015},
  DOI = {10.1016/j.actao.2015.01.002},
  URL = {https://www.documentation.ird.fr/hor/fdi:010064019},
}