@article{fdi:010064428,
  title = {{I}s the {WBE} model appropriate for semi-arid shrubs subjected to clear cutting ?},
  author = {{B}il-{A}ssanou {I}ssoufou, {H}. and {R}ambal, {S}. and {L}e {D}antec, {V}. and {O}i, {M}onique and {L}aurent, {J}.{P}. and {S}aadou, {M}. and {S}eghieri, {J}osiane},
  editor = {},
  language = {{ENG}},
  abstract = {{I}t is crucial to understand the adaptive mechanisms of woody plants facing periodic drought to assess their vulnerability to the increasing climate variability predicted in the {S}ahel. {G}uiera senegalensis {J}.{F}.{G}mel is a semi-evergreen {C}ombretaceae commonly found in {S}ahelian rangelands, fallows and crop fields because of its value as an agroforestry species. {W}e compared canopy leafing, and allometric measurements of leaf area, stem area and stem length and their relationships with leaf water potential, stomatal conductance (gs) and soil-to-leaf hydraulic conductance ({KS}-{L}), in mature and current-year resprouts of {G}. senegalensis in {S}ahelian {N}iger. {I}n mature shrubs, seasonal drought reduced the ratio of leaf area to cross-sectional stem area ({AL} : {AS}), mainly due to leaf shedding. {T}he canopy of the current-year resprouts remained permanently leafed as the shrubs produced leaves and stems continuously, and their {AL} : {AS} ratio increased throughout the dry season. {T}heir {KS}–{L} increased, whereas gs decreased. {W}est, {B}rown and {E}nquist's ({WBE}) model can thus describe allometric trends in the seasonal life cycle of undisturbed mature shrubs, but not that of resprouts. {A}nnual clear cutting drives allometric scaling relationships away from theoretical {WBE} predictions in the current-year resprouts, with scaling exponents 2.5 times greater than those of mature shrubs. {H}igh {KS}-{L} (twice that of mature shrubs) supports this intensive regeneration process. {T}he adaptive strategy described here is probably common to many woody species that have to cope with both severe seasonal drought and regular disturbance over the long term.},
  keywords = {{ARBRISSEAU} ; {JACHERE} ; {SECHERESSE} ; {ADAPTATION} ; {REGENERATION} ; {PHENOLOGIE} ; {FEUILLE} ; {POTENTIEL} {HYDRIQUE} ; {CONDUCTIVITE} {HYDRAULIQUE} ; {MODELISATION} ; {CHANGEMENT} {CLIMATIQUE} ; {ZONE} {SEMIARIDE} ; {SAHEL} ; {NIGER}},
  booktitle = {},
  journal = {{T}ree {P}hysiology},
  volume = {35},
  numero = {2},
  pages = {197--208},
  ISSN = {0829-318{X} ; 1758-4469},
  year = {2015},
  DOI = {10.1093/treephys/tpv002},
  URL = {https://www.documentation.ird.fr/hor/fdi:010064428},
}