Hydrological conditions control in situ DOM retention and release along a Mediterranean river

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 r...

Full description

Saved in:
Bibliographic Details
Published in:Water research (Oxford) 2016-08, Vol.99, p.33-45
Main Authors: Butturini, A., Guarch, A., Romaní, A.M., Freixa, A., Amalfitano, S., Fazi, S., Ejarque, E.
Format: Article
Language:English
Subjects:
Conduits
Dissolved organic matter
Droughts
Ecologia microbiana
Floods
Floods and droughts
Freshwater
Humic and protein-like moieties
Humic Substances
Hydrological extremes
Hydrology
Mass balance
Mediterranean rivers
Microbial ecology
Microorganismes
Microorganisms
Molecular size distribution
Rivers
Rivers - chemistry
Transport
Transportation corridors
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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 
ISSN:0043-1354
1879-2448
DOI:10.1016/j.watres.2016.04.036