@article{fdi:010064067,
  title = {{S}patial and temporal variability of {CO}2 fluxes in tropical estuarine systems near areas of high population density in {B}razil},
  author = {{N}oriega, {C}. and {A}raujo, {M}. and {L}ef{\`e}vre, {N}athalie and {M}ontes, {M}. {F}. and {G}aspar, {F}. and {V}eleda, {D}.},
  editor = {},
  language = {{ENG}},
  abstract = {{Q}uantifications of {CO}2 fluxes across the air-water interface of estuarine ecosystems are needed to understand regional carbon balances. {I}n this study, we estimate the amount of carbon emitted from tropical estuaries of the {S}tate of {P}ernambuco, {B}razil, using measurements of temperature, alkalinity, salinity and p{H} at stations located in the estuaries. {T}he results showed that the average {CO}2 fluxes (+51 +/- {A} 32 mmol m(-2) day(-1)) were mainly a product of the input of aloctone organic matter from urban centers with high population densities (similar to 1,000 inhabitants.km(-2)) adjacent to the estuarine systems. {T}his organic material increased the amount of aqueous {CO}2, which increased the p{CO}(2) to 8,900 mu atm. {O}ctober, {N}ovember and {D}ecember had the highest monthly averages of the parameters associated with the carbonate system ({HCO}3 (-), dissolved inorganic carbon, aqueous carbon dioxide, {CO}3 (2-), total alkalinity, temperature and p{H}), whereas the averages in {J}uly correlated with the {CO}2 fluxes. {M}ultivariate analysis revealed that estuarine areas near the most densely populated areas ({B}eberibe-9,000 inhabitants.km(-2) and {P}aratibe-3,000 inhabitants.km(-2)) were positively correlated with high {CO}2 fluxes and high p{CO}(2).},
  keywords = {{CO}2 fluxes ; {P}opulation density ; {T}ropical estuaries ; {B}razilian coast ; {BRESIL}},
  booktitle = {},
  journal = {{R}egional {E}nvironmental {C}hange},
  volume = {15},
  numero = {4},
  pages = {619--630},
  ISSN = {1436-3798},
  year = {2015},
  DOI = {10.1007/s10113-014-0671-3},
  URL = {https://www.documentation.ird.fr/hor/fdi:010064067},
}