@article{fdi:010073766,
  title = {{A}ssessing the contribution of porewater discharge in carbon export and {CO}2 evasion in a mangrove tidal creek ({C}an {G}io, {V}ietnam)},
  author = {{T}aillardat, {P}. and {W}illemsen, {P}. and {M}archand, {C}yril and {F}riess, {D}. {A}. and {W}idory, {D}. and {B}audron, {P}. and {T}ruong, {V}. {V}. and {N}guyen, {T}. {N}. and {Z}iegler, {A}. {D}.},
  editor = {},
  language = {{ENG}},
  abstract = {{A}lthough mangrove forests are efficient natural carbon sinks, most of the atmospheric carbon dioxide ({CO}2) fixed by its vegetation is believed to be exported via tidal exchange, rather than stored in the vegetative biomass and sediment. {H}owever, the magnitude of tidal export is largely unknown because direct measurements are scarce. {W}e deployed a novel experimental design that combined automated high-resolution measurements of hydrodynamic, hydrogeochemical and biogeochemical parameters during the dry season in a mangrove tidal creek in the {C}an {G}io {M}angrove {F}orest in {V}ietnam. {T}he objective was to quantify the tide-controlled water, porewater, {DIC} and {DOC} exchange, and estimate the {CO}2 evasion throughout tidal cycles contrasted by amplitude. {D}ata from three 25-h time series showed a dear peak of {DIC}, {DOC}, p{CO}(2), and {R}n-222 at low tide, particularly during tidal cycles of large amplitude, which directly relate to porewater discharge. {O}ur mass balance models revealed that the tidal creek was a net exporter of dissolved carbon to coastal waters, with an important contribution (38%) coming from {DIC} in porewater discharge. {P}orewater exchange varied from 3.1 +/- 1.6 to 7.1 +/- 2.4 cm day(-1). {DIC} exchange ranged from 352 +/- 34 to 678 +/- 79 mmo{IC} m(-2) day(-1); {DOC} exchange, 20.6 +/- 1.9 to 67.7 +/- 7.9 mmol {C} m(-2) day(-1); and {CO}2 evasion, 69.9 +/- 10.5 to 173.7 +/- 26.1 mmo{IC} m(-2) day(-1). {T}hese estimates were in the high range of previous carbon assessments and were explained by (i) the monitoring station being located at equal distance from the head and the mouth of the creek, which minimized carbon degradation and losses associated to transport in water; and (ii) the site being a highly productive mangrove within {S}outh {E}ast {A}sia.},
  keywords = {{P}ermeable sediments ; {P}orewater discharge ; {C}arbon cycling ; {T}idal exchange ; {R}adon mass balance model ; {VIET} {NAM} ; {CAN} {GIO}},
  booktitle = {},
  journal = {{J}ournal of {H}ydrology},
  volume = {563},
  numero = {},
  pages = {303--318},
  ISSN = {0022-1694},
  year = {2018},
  DOI = {10.1016/j.jhydrol.2018.05.042},
  URL = {https://www.documentation.ird.fr/hor/fdi:010073766},
}