OPENAIRE OpenAire Datacite Sygma Bielefeld Academic Search Engine (BASE) HAL-INSU Archivio Istituzionale della Ricerca (AperTO) - Università di Torino Crossref Microsoft Academic Graph KITopen u:cris Permanent Hosting, Archiving and Indexing of Digital Resources and Assets CORE (RIOXX-UK Aggregator) Universität Innsbruck Forschungsleistungsdokumentation HAL INRAE UnpayWall Digitala Vetenskapliga Arkivet - Academic Archive On-line Publikationer från Uppsala Universitet Universidade de Lisboa: Repositório.UL HAL-CEA Publikationer från Umeå universitet European Union Open Data Portal https://eprints.bournemouth.ac.uk/35763/1/s43247-021-00192-w.pdf https://iris.unito.it/bitstream/2318/1799544/1/106%20EURORUN.pdf https://www.nature.com/articles/s43247-021-00192-w.pdf https://doi.org/10.1038/s43247-021-00192-w Communications Earth &amp; Environment Open Access 2021-06-10 2021-03-22 2021-03-22 2021-09-06 2021-06-16 Abstract<p>Globally, inland waters emit over 2 Pg of carbon per year as carbon dioxide, of which the majority originates from streams and rivers. Despite the global significance of fluvial carbon dioxide emissions, little is known about their diel dynamics. Here we present a large-scale assessment of day- and night-time carbon dioxide fluxes at the water-air interface across 34 European streams. We directly measured fluxes four times between October 2016 and July 2017 using drifting chambers. Median fluxes are 1.4 and 2.1￢ﾀﾉmmol￢ﾀﾉm￢ﾈﾒ2 h￢ﾈﾒ1 at midday and midnight, respectively, with night fluxes exceeding those during the day by 39%. We attribute diel carbon dioxide flux variability mainly to changes in the water partial pressure of carbon dioxide. However, no consistent drivers could be identified across sites. Our findings highlight widespread day-night changes in fluvial carbon dioxide fluxes and suggest that the time of day greatly influences measured carbon dioxide fluxes across European streams.</p DYNAMICS 0106 biological sciences DIURNAL-VARIATION 550 Naturgeografi PCO(2) Geography & travel Oceanografi, hydrologi och vattenresurser 910 01 natural sciences Oceanography, Hydrology and Water Resources 105205 Klimawandel Limnology 105304 Hydrologie SDG 13 - Climate Action info:eu-repo/classification/ddc/910 106026 Ecosystem research 1ST-ORDER STREAM 106020 Limnology 105205 Climate change 0105 earth and related environmental sciences [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.OCEAN] Sciences of the Universe [physics]/Ocean, Atmosphere EVASION Carbon cycle ddc:910 106020 Limnologie Climate Science ECOSYSTEM METABOLISM WATER-AIR Physical Geography 106026 Ökosystemforschung CO2 EMISSIONS 13. Climate action SDG 13 – Maßnahmen zum Klimaschutz Environmental chemistry DISSOLVED ORGANIC-MATTER Klimatvetenskap 105304 Hydrology GAS-EXCHANGE Magdalena Nagler, Xisca Timoner, Xisca Timoner, Katrin Attermeyer, Katrin Attermeyer, Sophie Cauvy-Fraunié, Sonia Herrero Ortega, Juliana Monteiro, Francesca Pilotto, Vesela Evtimova, Anne Deininger, Anne Deininger, David H. Fletcher, Laura Barral-Fraga, Ana Portela, Elvira de Eyto, Ada Pastor, Ada Pastor, Ada Pastor, Ferran Romero, Ferran Romero, Tea Bašić, Tea Bašić, Danny Sheath, Danny Sheath, Nikolay Simov, Thomas Fuss, Christian Noss, Alberto Doretto, Joachim Audet, Joachim Audet, Anna Freixa, Anna Freixa, Georgina M. A. Busst, Marcus Klaus, Marcus Klaus, Brian C. Doyle, Jordi-René Mor, Jordi-René Mor, Nina Pansch, Josephine Pegg, Josephine Pegg, Clara Mendoza-Lera, José L. J. Ledesma, José L. J. Ledesma, José L. J. Ledesma, Liu Liu, Liu Liu, Georg H. Niedrist, Catherine Gutmann Roberts, Anna C. Nydahl, Lyubomir Kenderov, Stefano Fenoglio, Jeremy Fonvielle, Martin Rulík, Peter Gilbert, Clara Romero González-Quijano, Joan Pere Casas-Ruiz, Joan Pere Casas-Ruiz, Núria Catalán, Pascal Bodmer, Pascal Bodmer, Pascal Bodmer, Miriam Colls, Miriam Colls, Adam Bednařík, 2021-03-22 journalpaper Abstract<p>Globally, inland waters emit over 2 Pg of carbon per year as carbon dioxide, of which the majority originates from streams and rivers. Despite the global significance of fluvial carbon dioxide emissions, little is known about their diel dynamics. Here we present a large-scale assessment of day- and night-time carbon dioxide fluxes at the water-air interface across 34 European streams. We directly measured fluxes four times between October 2016 and July 2017 using drifting chambers. Median fluxes are 1.4 and 2.1￢ﾀﾉmmol￢ﾀﾉm￢ﾈﾒ2 h￢ﾈﾒ1 at midday and midnight, respectively, with night fluxes exceeding those during the day by 39%. We attribute diel carbon dioxide flux variability mainly to changes in the water partial pressure of carbon dioxide. However, no consistent drivers could be identified across sites. Our findings highlight widespread day-night changes in fluvial carbon dioxide fluxes and suggest that the time of day greatly influences measured carbon dioxide fluxes across European streams.</p Carbon dioxide fluxes increase from day to night across European streams 10.1038/s43247-021-00192-w 839709