@article{fdi:010077166,
  title = {{L}inking tree-rooting profiles to leaf phenology : a first attempt on {T}ectona grandis {L}inn {F}.},
  author = {{C}lement, {C}. and {P}ierret, {A}lain and {M}aeght, {J}ean-{L}uc and {H}artmann, {C}hristian and {X}ayyathip, {K}. and {S}oulileuth, {B}. and {S}ounyafong, {P}. and {L}atsachack, {K}. and {T}hammahacksa, {C}. and {S}engtaheuanghoung, {O}.},
  editor = {},
  language = {{ENG}},
  abstract = {{K}ey message {I}n this study, deep roots of teak tree seem to have acted as a "safety net", allowing trees to maintain their canopy cover longer, thus coping with inter- and intra-seasonal drought. {A}bstract {M}ost deciduous species of dry monsoon forest, such as teak tree ({T}ectona grandis {L}inn {F}.), establish new foliage slightly before, or at the onset of the rainy season, when the upper soil layers are the driest. {T}his phenomenon suggests that trees rely upon deep water storage to cover their need for the new canopy development. {T}herefore, we hypothesized that deeper rooted trees may display phenological patterns that confer them physiological advantages with regard to access to water. {A}t an upland location in {N}orthern {L}aos, we characterized 10 mono-specific teak tree plantations corresponding to micro-environments that differed with regard to soil, slope, elevation, and orientation. {W}e compared the leaf phenology of trees, taking into account their age, diameter at breast height ({DBH}), and rooting pattern down to 3.5 m depth. {W}ith at least 5% of its total fine roots below 2 m, teak trees were found to be deep rooted. {T}here was no correlation between the timing of leaf flushing and rooting depth nor with primary production (assessed on the basis of tree girth increase). {L}eaf flushing was strongly synchronous with rainfall rather pointing out that its primary determinant is the water status of topsoil and near-surface soil horizons that results from seasonal rainfall, even though the mechanism(s) underlying such a process remain to be clarified. {H}owever, deeper rooted teak trees tended to maintain a denser canopy cover over longer periods than trees with shallower rooting systems. {T}his suggests that, deep roots may play a role as a "safety net", i.e., providing improved resilience to inter- and intra-seasonal drought events, but do not influence the timing of the leaf flushing.},
  keywords = {{D}eep roots ; {L}eaf flushing ; {T}ropical deciduous tree phenology ; {A}fforestation ; {M}ono-crop teak forest ; {LAOS}},
  booktitle = {},
  journal = {{T}rees : {S}tructure and {F}unction},
  volume = {33},
  numero = {5},
  pages = {1491--1504},
  ISSN = {0931-1890},
  year = {2019},
  DOI = {10.1007/s00468-019-01876-9},
  URL = {https://www.documentation.ird.fr/hor/fdi:010077166},
}