{"refrec":{"BRefID":220969,"RR":"<b>Koné, J.M.Y.; Abril, G.; Delille, B.; Borges, A.V.</b> (2010). Seasonal variability of methane in the rivers and lagoons of Ivory Coast (West Africa). <i>Biogeochemistry 100(1-3)</i>: 21-37. <a href=\"http://dx.doi.org/10.1007/s10533-009-9402-0\" target=\"_blank\">http://dx.doi.org/10.1007/s10533-009-9402-0</a>","BEntID":212699,"PublicFlag":1,"CheckedFlag":1,"wosflag":1,"vabbflag":1,"RefStringPartII":". <i>Biogeochemistry 100(1-3)</i>: 21-37. <a href=\"http://dx.doi.org/10.1007/s10533-009-9402-0\" target=\"_blank\">http://dx.doi.org/10.1007/s10533-009-9402-0</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":0,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Koné, J.M.Y.; Abril, G.; Delille, B.; Borges, A.V.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Koné, J.M.Y. <i>et al.</i>","Englishabstract":"We report a data-set of dissolved methane (CH<sub class=\"a-plus-plus\">4</sub>) in three rivers (Comoé, Bia and Tanoé) and five lagoons (Grand-Lahou, Ebrié, Potou, Aby and Tendo) of Ivory Coast (West Africa), during the four main climatic seasons (high dry season, high rainy season, low dry season and low rainy season). The surface waters of the three rivers were over-saturated in CH<sub class=\"a-plus-plus\">4</sub> with respect to atmospheric equilibrium (2221–38719%), and the seasonal variability of CH<sub class=\"a-plus-plus\">4</sub> seemed to be largely controlled by dilution during the flooding period. The strong correlation of CH<sub class=\"a-plus-plus\">4</sub> concentrations with the partial pressure of CO<sub class=\"a-plus-plus\">2</sub> (pCO<sub class=\"a-plus-plus\">2</sub>) and dissolved silicate (DSi) confirm the dominance of a continental sources (from soils) for both CO<sub class=\"a-plus-plus\">2</sub> and CH<sub class=\"a-plus-plus\">4</sub> in these rivers. Diffusive air–water CH<sub class=\"a-plus-plus\">4</sub> fluxes ranged between 25 and 1187 µmol m<sup class=\"a-plus-plus\">-2</sup> day<sup class=\"a-plus-plus\">-1</sup>, and annual integrated values were 288 ± 107, 155 ± 38, and 241 ± 91 µmol m<sup class=\"a-plus-plus\">-2</sup> day<sup class=\"a-plus-plus\">-1</sup> in the Comoé, Bia and Tanoé rivers, respectively. In the five lagoons, surface waters were also over-saturated in CH<sub class=\"a-plus-plus\">4</sub> (ranging from 1496 to 51843%). Diffusive air–water CH<sub class=\"a-plus-plus\">4</sub> fluxes ranged between 20 and 2403 µmol m<sup class=\"a-plus-plus\">-2</sup> day<sup class=\"a-plus-plus\">-1</sup>, and annual integrated values were 78 ± 34, 338 ± 217, 227 ± 79, 330 ± 153 and 326 ± 181 µmol m<sup class=\"a-plus-plus\">-2</sup> day<sup class=\"a-plus-plus\">-1</sup> in the Grand-Lahou, Ebrié, Potou, Aby and Tendo lagoons, respectively. The largest CH<sub class=\"a-plus-plus\">4</sub> over-saturations were observed in the Tendo and Aby lagoons that are permanently stratified systems (unlike the other three lagoons), leading to anoxic bottom waters favorable for a large CH<sub class=\"a-plus-plus\">4</sub> production. In addition, these two stratified lagoons showed low pCO<sub class=\"a-plus-plus\">2</sub> values due to high primary production, which suggests an efficient transfer of organic matter across the pycnocline. As a result, the stratified Tendo and Aby lagoons were respectively, a low source of CO<sub class=\"a-plus-plus\">2</sub> to the atmosphere and a sink of atmospheric CO<sub class=\"a-plus-plus\">2</sub> while the other three well-mixed lagoons were strong sources of CO<sub class=\"a-plus-plus\">2</sub> to the atmosphere but less over-saturated in CH<sub class=\"a-plus-plus\">4</sub>.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Seasonal variability of methane in the rivers and lagoons of Ivory Coast (West Africa)","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2024-12-10 01:33:17.368041","timezone_type":1,"timezone":"+01:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":"Methane; Lagoons; Rivers; Ivory Coast","OtherDescriptors":null,"Notes":null,"AnaPub":2010,"MonPub":null,"DateUpdate":"2015-11-04","DateCreate":"2012-12-07","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000281568700003","VABBcode":null,"OpenAcc":0,"DOI":"10.1007/s10533-009-9402-0"},"refs":null,"anarec":{"AnaID":220969,"PubliDate":2010,"Pagination":"21-37","XtraPublOfAnaID":null,"ISBN":null,"Volume":"100","Issue":"1-3","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":45092,"SerRR":"Biogeochemistry. 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