{"refrec":{"BRefID":361079,"RR":"<b>Roth, F.; Broman, E.; Sun, X.; Bonaglia, S.; Nascimento, F.; Prytherch, J.; Brüchert, V.; Lundevall Zara, M.; Brunberg, M.; Geibel, M.C.; Humborg, C.; Norkko, A.</b> (2023). Methane emissions offset atmospheric carbon dioxide uptake in coastal macroalgae, mixed vegetation and sediment ecosystems. <i>Nature Comm. 14(1)</i>. <a href=\"https://dx.doi.org/10.1038/s41467-022-35673-9\" target=\"_blank\">https://dx.doi.org/10.1038/s41467-022-35673-9</a>","BEntID":358794,"PublicFlag":1,"CheckedFlag":0,"wosflag":1,"vabbflag":1,"RefStringPartII":". <i>Nature Comm. 14(1)</i>. <a href=\"https://dx.doi.org/10.1038/s41467-022-35673-9\" target=\"_blank\">https://dx.doi.org/10.1038/s41467-022-35673-9</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Roth, F.; Broman, E.; Sun, X.; Bonaglia, S.; Nascimento, F.; Prytherch, J.; Brüchert, V.; Lundevall Zara, M.; Brunberg, M.; Geibel, M.C.; Humborg, C.; Norkko, A.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Roth, F. <i>et al.</i>","Englishabstract":"Coastal ecosystems can efficiently remove carbon dioxide (CO<sub>2</sub>) from the atmosphere and are thus promoted for nature-based climate change mitigation. Natural methane (CH<sub>4</sub>) emissions from these ecosystems may counterbalance atmospheric CO<sub>2</sub> uptake. Still, knowledge of mechanisms sustaining such&nbsp;CH<sub>4</sub> emissions and their contribution to net radiative forcing remains scarce for globally prevalent macroalgae, mixed vegetation, and surrounding depositional sediment habitats. Here we show that these habitats emit CH<sub>4</sub> in the range of 0.1 – 2.9 mg CH<sub>4</sub> m<sup>−2</sup> d<sup>−1</sup> to the atmosphere, revealing in situ CH<sub>4</sub> emissions from macroalgae that were&nbsp;sustained by divergent methanogenic archaea in anoxic microsites. Over an annual cycle, CO<sub>2</sub>-equivalent CH<sub>4</sub> emissions offset 28 and 35% of the carbon sink capacity attributed to atmospheric CO<sub>2</sub> uptake in the macroalgae and mixed vegetation habitats, respectively, and augment net CO<sub>2</sub> release of unvegetated sediments by 57%. Accounting for CH<sub>4</sub> alongside CO<sub>2</sub> sea-air fluxes and identifying the mechanisms controlling these emissions is crucial to constrain the potential of coastal ecosystems as net atmospheric carbon sinks and develop informed climate mitigation strategies.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Methane emissions offset atmospheric carbon dioxide uptake in coastal macroalgae, mixed vegetation and sediment ecosystems","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2026-04-24 01:33:17.255867","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":null,"OtherDescriptors":null,"Notes":null,"AnaPub":2023,"MonPub":null,"DateUpdate":"2023-02-09","DateCreate":"2023-02-09","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000953169900007","VABBcode":null,"OpenAcc":1,"DOI":"10.1038/s41467-022-35673-9"},"refs":null,"anarec":{"AnaID":361079,"PubliDate":2023,"Pagination":null,"XtraPublOfAnaID":null,"ISBN":null,"Volume":"14","Issue":"1","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":198717,"SerRR":"Nature Communications. 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