{"refrec":{"BRefID":295233,"RR":"<b>Borges, A.V.; Speeckaert, G.; Champenois, W.; Scranton, M.I.; Gypens, N.</b> (2018). Productivity and temperature as drivers of seasonal and spatial variations of dissolved methane in the Southern Bight of the North Sea. <i>Ecosystems 21(4)</i>: 583-599. <a href=\"https://dx.doi.org/10.1007/s10021-017-0171-7\" target=\"_blank\">https://dx.doi.org/10.1007/s10021-017-0171-7</a>","BEntID":287320,"PublicFlag":1,"CheckedFlag":1,"wosflag":1,"vabbflag":1,"RefStringPartII":". <i>Ecosystems 21(4)</i>: 583-599. <a href=\"https://dx.doi.org/10.1007/s10021-017-0171-7\" target=\"_blank\">https://dx.doi.org/10.1007/s10021-017-0171-7</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Borges, A.V.; Speeckaert, G.; Champenois, W.; Scranton, M.I.; Gypens, N.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Borges, A.V. <i>et al.</i>","Englishabstract":"Dissolved CH<sub>4</sub> concentrations in the Belgian coastal zone (North Sea) ranged between 670 nmol l<sup>−1</sup> nearshore and 4 nmol l<sup>−1</sup> offshore. Spatial variations of CH<sub>4</sub> were related to sediment organic matter (OM) content and gassy sediments. In nearshore stations with fine sand or muddy sediments, the CH<sub>4</sub> seasonal cycle followed water temperature, suggesting methanogenesis control by temperature in these OM-rich sediments. In offshore stations with permeable sediments, the CH<sub>4</sub> seasonal cycle showed a yearly peak following the chlorophyll-<i>a</i> spring peak, suggesting that in these OM-poor sediments, methanogenesis depended on freshly produced OM delivery. This does not exclude the possibility that some CH<sub>4</sub> might originate from dimethylsulfide (DMS) or dimethylsulfoniopropionate (DMSP) or methylphosphonate transformations in the most offshore stations. Yet, the average seasonal CH<sub>4</sub> cycle was unrelated to those of DMS(P), very abundant during the <i>Phaeocystis</i> bloom. The annual average CH<sub>4</sub> emission was 126 mmol m<sup>−2</sup> y<sup>−1</sup> in the most nearshore stations (~4 km from the coast) and 28 mmol m<sup>−2</sup> y<sup>−1</sup> in the most offshore stations (~23 km from the coast), 1260–280 times higher than the open ocean average value (0.1 mmol m<sup>−2</sup> y<sup>−1</sup>). The strong control of CH<sub>4</sub> by sediment OM content and by temperature suggests that marine coastal CH<sub>4</sub> emissions, in particular in shallow areas, should respond to future eutrophication and warming of climate. This is supported by the comparison of CH<sub>4</sub> concentrations at five stations obtained in March 1990 and 2016, showing a decreasing trend consistent with alleviation of eutrophication in the area.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Productivity and temperature as drivers of seasonal and spatial variations of dissolved methane in the Southern Bight of the North Sea","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, North Sea, sediments, eutrophication, dimethylsulfide, dimethylsulfoniopropionate ","OtherDescriptors":null,"Notes":null,"AnaPub":2018,"MonPub":null,"DateUpdate":"2021-05-17","DateCreate":"2018-05-03","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000433955800001","VABBcode":null,"OpenAcc":0,"DOI":"10.1007/s10021-017-0171-7"},"refs":null,"anarec":{"AnaID":295233,"PubliDate":2018,"Pagination":"583-599","XtraPublOfAnaID":null,"ISBN":null,"Volume":"21","Issue":"4","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":45587,"SerRR":"Ecosystems. Springer: New York, NY.  ISSN 1432-9840; e-ISSN 1435-0629","StandardTitleSer":"Ecosystems","ISSN":"1432-9840","AbbrevSer":"Ecosystems","StandardTitleMon":null,"StartPage":1,"Pages":17,"ToPubliDate":null,"BRefBibLvlCode":"S","SerNotes":null},"monrec":null,"serrec":null,"relations":null,"relationsRev":null,"addrec":null,"othpubs":null,"ownerships":null,"authors":[{"AutName":"Borges","Firstname":"Alberto Vieira","Initials":"A.V.","Affiliation":"Unité d'Océanographie Chimique, Institut de Physique (B5), Université de Liège","Discriminator":null,"CorporateFlag":0,"BEntID":287320,"AutID":154104,"OrderNr":1,"DegrID":null,"EditorFlag":0,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"InsAcronym":null,"InsFSN":"Université de Liège; Faculté des Sciences; Département d'Astrophysique, Géophysique et Océanographie; Unité d’Océanographie Chimique","ORCID":"0000-0002-5434-2247","PersID":3170,"InsID":153},{"AutName":"Speeckaert","Firstname":"Gaëlle","Initials":"G.","Affiliation":"Unité d'Océanographie Chimique, Institut de Physique (B5), Université de Liège","Discriminator":null,"CorporateFlag":0,"BEntID":287320,"AutID":324681,"OrderNr":2,"DegrID":null,"EditorFlag":0,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"InsAcronym":null,"InsFSN":"Université de Liège; 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