@article{fdi:010085160,
  title = {{W}ater table depth modulates productivity and biomass across {A}mazonian forests},
  author = {{S}ousa, {T}. {R}. and {S}chietti, {J}. and {R}ibeiro, {I}. {O}. and {R}{\'e}jou-{M}{\'e}chain, {M}axime and et al.},
  editor = {},
  language = {{ENG}},
  abstract = {{A}im {W}ater availability is the major driver of tropical forest structure and dynamics. {M}ost research has focused on the impacts of climatic water availability, whereas remarkably little is known about the influence of water table depth and excess soil water on forest processes. {N}evertheless, given that plants take up water from the soil, the impacts of climatic water supply on plants are likely to be modulated by soil water conditions. {L}ocation {L}owland {A}mazonian forests. {T}ime period 1971-2019. {M}ethods {W}e used 344 long-term inventory plots distributed across {A}mazonia to analyse the effects of long-term climatic and edaphic water supply on forest functioning. {W}e modelled forest structure and dynamics as a function of climatic, soil-water and edaphic properties. {R}esults {W}ater supplied by both precipitation and groundwater affects forest structure and dynamics, but in different ways. {F}orests with a shallow water table (depth <5 m) had 18% less above-ground woody productivity and 23% less biomass stock than forests with a deep water table. {F}orests in drier climates (maximum cumulative water deficit < -160 mm) had 21% less productivity and 24% less biomass than those in wetter climates. {P}roductivity was affected by the interaction between climatic water deficit and water table depth. {O}n average, in drier climates the forests with a shallow water table had lower productivity than those with a deep water table, with this difference decreasing within wet climates, where lower productivity was confined to a very shallow water table. {M}ain conclusions {W}e show that the two extremes of water availability (excess and deficit) both reduce productivity in {A}mazon upland (terra-firme) forests. {B}iomass and productivity across {A}mazonia respond not simply to regional climate, but rather to its interaction with water table conditions, exhibiting high local differentiation. {O}ur study disentangles the relative contribution of those factors, helping to improve understanding of the functioning of tropical ecosystems and how they are likely to respond to climate change.},
  keywords = {above-ground biomass ; carbon ; forest dynamics ; groundwater ; seasonality ; tropical ecology ; {AMAZONIE}},
  booktitle = {},
  journal = {{G}lobal {E}cology and {B}iogeography},
  volume = {[{E}arly access]},
  numero = {},
  pages = {[18 ]},
  ISSN = {1466-822{X}},
  year = {2022},
  DOI = {10.1111/geb.13531},
  URL = {https://www.documentation.ird.fr/hor/fdi:010085160},
}