@article{fdi:010085087,
  title = {{D}oes eutrophication enhance greenhouse gas emissions in urbanized tropical estuaries ?},
  author = {{N}guyen, {A}. {T}. and {N}emery, {J}. and {G}ratiot, {N}icolas and {D}ao, {T}. {S}. and {L}e, {T}. {T}. {M}. and {B}aduel, {C}hristine and {G}arnier, {J}.},
  editor = {},
  language = {{ENG}},
  abstract = {{E}stuaries are considered as important sources of the global emission of greenhouse gases ({GHG}s). {U}rbanized estuaries often experience eutrophication under strong anthropogenic activities. {E}utrophication can enhance phytoplankton abundance, leading to carbon dioxide ({CO}2) consumption in the water column. {O}nly a few studies have evaluated the relationship between {GHG}s and eutrophication in estuaries. {I}n this study, we assessed the concentrations and fluxes of {CO}2, methane ({CH}4) and nitrous oxide ({N}2{O}) in combination with a suite of biogeochemical variables in four sampling campaigns over two years in a highly urbanized tropical estuary in {S}outheast {A}sia (the {S}aigon {R}iver {E}stuary, {V}ietnam). {T}he impact of eutrophication on {GHG}s was evaluated through several statistical methods and interpreted by biological processes. {T}he average concentrations of {CO}2, {CH}4 and {N}2{O} at the {S}aigon {R}iver in 2019-2020 were 3174 +/- 1725 mu g{C}-{CO}2 {L}-1, 5.9 +/- 16.8 mu g{C}-{CH}4 {L}-1 and 3.0 +/- 4.8 mu g{N}-{N}2{O} {L}-1, respectively. {T}heir concentrations were 13-18 times, 52-332 times, and 9-37 times higher than the global mean concentrations of {GHG}s, respectively. {W}hile {CO}2 concentration had no clear seasonal pattern, {N}2{O} and {CH}(4 )concentrations significantly differed between the dry and the rainy seasons. {T}he increase in eutrophication status along the dense urban area was linearly correlated with the increase in {GHG}s concentrations. {T}he presence of both nitrification and denitrification resulted in elevated {N}2{O} concentrations in this urban area of the estuary. {T}he high concentration of {CO}2 was contributed by the high concentration of organic carbon and mineralization process. {GHG}s fluxes at the {S}aigon {R}iver {E}stuary were comparable to other urbanized estuaries regardless of climatic condition. {C}ontrol of eutrophication in urbanized estuaries through the implantation of efficient wastewater treatment facilities will be an effective solution in mitigating the global warming potential caused by estuarine emissions.},
  keywords = {{B}iogeochemical processes ; {C}arbon dioxide ; {M}ethane ; {N}itrous oxide ; {S}aigon {R}iver ; {U}rbanization ; {V}ietnam ; {VIET} {NAM} ; {ZONE} {TROPICALE} ; {SAIGON} {COURS} {D}'{EAU}},
  booktitle = {},
  journal = {{E}nvironmental {P}ollution},
  volume = {303},
  numero = {},
  pages = {119105 [14 p.]},
  ISSN = {0269-7491},
  year = {2022},
  DOI = {10.1016/j.envpol.2022.119105},
  URL = {https://www.documentation.ird.fr/hor/fdi:010085087},
}