@article{fdi:010066949,
  title = {{N}et ecosystem {CO}2 exchange in the "{C}oeur de {V}oh" mangrove, {N}ew {C}aledonia : effects of water stress on mangrove productivity in a semi-arid climate},
  author = {{L}eopold, {A}. and {M}archand, {C}yril and {R}enchon, {A}. and {D}eborde, {J}onathan and {Q}uiniou, {T}. and {A}llenbach, {M}.},
  editor = {},
  language = {{ENG}},
  abstract = {{I}n {N}ew {C}aledonia, a world-renowned mangrove, the "{C}oeur de {V}oh", grows in a semi-arid climate and at a high elevation in the intertidal zone. {N}et {CO}2 exchange ({NEE}) between the {A}vicennia marina shrub mangrove and the atmosphere was studied using an eddy-covariance system. {T}he {NEE} and its biophysical controls were investigated, and net ecosystem production ({NEP}) was determined for one year. {T}he daytime {NEE} ranged from -10.7 mu mol m(-2) s(-1) to +6.9 mu mol m(-2) s(-1) and the nighttime {NEE} ranged from +0.38 mu mol m(-2) s(-1) to +8.80 mu mol m(-2) s(-1). {B}oth minimum values of daytime {NEE} and maximum values of nighttime {NEE} were measured during the wet, and warm season. {S}olar radiation, temperature and vapor pressure deficit were the controlling factors of {NEE} variations on both diel and seasonal scales. {W}ater availability from tides and rainfall appeared to be key factors driving mangrove productivity. {T}he tidal cycle also had pronounced effects on the mangrove {NEE}. {O}ur results suggest that submerged conditions during high tide decreased the ecosystem respiration contribution and may increase the rate of tree photosynthesis. {T}he absence of flooding spanning a few days rapidly decreased the {NEE}, suggesting that the trees experience water stress. {T}he {NEP} was significantly and negatively correlated with rainfall and showed high seasonal variation. {D}uring the wet season, the {NEP} was very low and even negative, whereas the ecosystem photosynthesis was the greatest of the year. {I}ndeed, the low {NEP} during the wet season was related to a significant increase in ecosystem respiration, whereas the low {NEP} during the dry season was linked to a decrease in ecosystem photosynthesis due primarily to an absence of freshwater from rainfall and seawater from tides. {W}e estimate that the annual {NEP} was 73.8 g{C} m(-2) and may be lower if carbon tidal exports are significant. {C}onsequently, the {NEP} of this dwarf mangrove in a semi-arid climate was much lower than that of mangroves in humid climates.},
  keywords = {{M}angrove ; {N}et ecosystem exchange ; {E}cosystem productivity ; {E}ddy-{C}ovariance ; {D}warfism ; {NOUVELLE} {CALEDONIE} ; {ZONE} {SEMIARIDE}},
  booktitle = {},
  journal = {{A}gricultural and {F}orest {M}eteorology},
  volume = {223},
  numero = {},
  pages = {217--232},
  ISSN = {0168-1923},
  year = {2016},
  DOI = {10.1016/j.agrformet.2016.04.006},
  URL = {https://www.documentation.ird.fr/hor/fdi:010066949},
}