dc.contributor |
Ministerio de Ciencia e Innovación (Espanya) |
dc.contributor.author |
Butturini, Andrea |
dc.contributor.author |
Guarch, A. |
dc.contributor.author |
Romaní i Cornet, Anna M. |
dc.contributor.author |
Freixa Casals, Anna |
dc.contributor.author |
Amalfitano, Stefano |
dc.contributor.author |
Fazi, Stefano |
dc.contributor.author |
Ejarque i Gonzàlez, Elisabet |
dc.date |
2017-06-02T10:40:37Z |
dc.date |
2017-06-02T10:40:37Z |
dc.date |
2016-08-01 |
dc.identifier.citation |
0043-1354 (versió paper) |
dc.identifier.citation |
1879-2448 (versió electrònica) |
dc.identifier.citation |
025727 |
dc.identifier.uri |
http://hdl.handle.net/10256/14148 |
dc.format |
application/pdf |
dc.language.iso |
eng |
dc.publisher |
Elsevier |
dc.relation |
http://dx.doi.org/10.1016/j.watres.2016.04.036 |
dc.relation |
MICINN/PN 2012-2014/CGL2011-30151-C02-01 |
dc.relation |
Reproducció digital del document publicat a: http://dx.doi.org/10.1016/j.watres.2016.04.036 |
dc.relation |
Water Research, 2016, vol. 99, p. 33-45 |
dc.relation |
Articles publicats (D-CCAA) |
dc.relation |
info:eu-repo/grantAgreement/EC/FP7/603629 |
dc.rights |
Attribution-NonCommercial-NoDerivs 3.0 Spain |
dc.rights |
info:eu-repo/semantics/openAccess |
dc.rights |
http://creativecommons.org/licenses/by-nc-nd/3.0/es/ |
dc.subject |
Ecologia microbiana |
dc.subject |
Microbial ecology |
dc.subject |
Microorganismes |
dc.subject |
Microorganisms |
dc.title |
Hydrological conditions control in situ DOM retention and release along a Mediterranean river |
dc.type |
info:eu-repo/semantics/article |
dc.type |
info:eu-repo/semantics/publishedVersion |
dc.description.abstract |
Uncertainties exist regarding the magnitude of in situ dissolved organic matter (DOM) processing in lotic systems. In addition, little is known about the effects of extreme hydrological events on in-stream DOM retention or release during downriver transport. This study quantified the net in-stream retention/release efficiencies (η) of dissolved organic carbon (DOC) and its humic and protein-like fluorescent fractions along a Mediterranean river during drought, baseflow and flood conditions. High performance size exclusion chromatography was used to describe the apparent size distributions of the humic and protein-like DOM moieties. A snapshot mass balance allowed estimating the η values of DOC and humic and protein-like fractions. Significant DOM net retention (η < 0) was detected during the drought condition and the protein-like fraction was more retained than the humic-like fraction and bulk DOC. In addition, small substances were more efficiently retained than larger substances. DOC retention decreased under baseflow conditions, but it remained significant. The humic and protein-like net efficiencies exhibited high variability, but the net retention were not significant. From a longitudinal perspective, the entire fluvial corridor contributed net retention of DOC and humic and protein-like moieties net retention during drought condition. In contrast, net retention/release efficiencies exhibited spatial variability during baseflow condition. The flood preferentially mobilized large size DOM molecules and the fluvial corridor behaved as a homogeneous passive DOM (η = 0) conduit. This research highlights the relevance of hydrological extreme events on the magnitude of DOM retention/release mass balance and emphasizes the need to perform measurements during these conditions to quantify the impact of fluvial corridors on DOM fate and transport |
dc.description.abstract |
This research is funded by the Spanish Ministry of Education and Science (MEC) (CGL2011-30151-C02 and CGL2014-5876-C3-R) and European Community 7th Framework Programme (No. 603629- ENV-2013-6.2.1-Globaqua) |