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dc.contributor.authorShumilova, Oleksandra
dc.contributor.authorZak, Dominik
dc.contributor.authorDatry, Thibault
dc.contributor.authorvon Schiller, Daniel
dc.contributor.authorCorti, Roland
dc.contributor.authorFoulquier, Arnaud
dc.contributor.authorObrador, Biel
dc.contributor.authorTockner, Klement
dc.contributor.authorAllan, Daniel C
dc.contributor.authorAltermatt, Florian
dc.contributor.authorIsabel Arce, Maria
dc.contributor.authorArnon, Shai
dc.contributor.authorBanas, Damien
dc.contributor.authorBanegas-Medina, Andy
dc.contributor.authorBeller, Erin
dc.contributor.authorBlanchette, Melanie L
dc.contributor.authorBlanco-Libreros, Juan F
dc.contributor.authorBlessing, Joanna
dc.contributor.authorBoechat, Iola Goncalves
dc.contributor.authorBoersma, Kate
dc.contributor.authorBogan, Michael T
dc.contributor.authorBonada, Nuria
dc.contributor.authorBond, Nick R
dc.contributor.authorBrintrup, Kate
dc.contributor.authorBruder, Andreas
dc.contributor.authorBurrows, Ryan
dc.contributor.authorCancellario, Tommaso
dc.contributor.authorCarlson, Stephanie M
dc.contributor.authorCauvy-Fraunie, Sophie
dc.contributor.authorCid, Nuria
dc.contributor.authorDanger, Michael
dc.contributor.authorde Freitas Terra, Bianca
dc.contributor.authorDe Girolamo, Anna Maria
dc.contributor.authordel Campo, Ruben
dc.contributor.authorDyer, Fiona
dc.contributor.authorElosegi, Arturo
dc.contributor.authorFaye, Emile
dc.contributor.authorFebria, Catherine
dc.contributor.authorFigueroa, Ricardo
dc.contributor.authorFour, Brian
dc.contributor.authorGessner, Mark O
dc.contributor.authorGnohossou, Pierre
dc.contributor.authorCerezo, Rosa Gomez
dc.contributor.authorGomez-Gener, Lluis
dc.contributor.authorGraca, Manuel AS
dc.contributor.authorGuareschi, Simone
dc.contributor.authorGuecker, Bjoern
dc.contributor.authorHwan, Jason L
dc.contributor.authorKubheka, Skhumbuzo
dc.contributor.authorLanghans, Simone Daniela
dc.contributor.authorLeigh, Catherine
dc.contributor.authorLittle, Chelsea J
dc.contributor.authorLorenz, Stefan
dc.contributor.authorMarshall, Jonathan
dc.contributor.authorMcIntosh, Angus
dc.contributor.authorMendoza-Lera, Clara
dc.contributor.authorMeyer, Elisabeth Irmgard
dc.contributor.authorMilisa, Marko
dc.contributor.authorMlambo, Musa C
dc.contributor.authorMoleon, Marcos
dc.contributor.authorNegus, Peter
dc.contributor.authorNiyogi, Dev
dc.contributor.authorPapatheodoulou, Athina
dc.contributor.authorPardo, Isabel
dc.contributor.authorParil, Petr
dc.contributor.authorPesic, Vladimir
dc.contributor.authorRodriguez-Lozano, Pablo
dc.contributor.authorRolls, Robert J
dc.contributor.authorSanchez-Montoya, Maria Mar
dc.contributor.authorSavic, Ana
dc.contributor.authorSteward, Alisha
dc.contributor.authorStubbington, Rachel
dc.contributor.authorTaleb, Amina
dc.contributor.authorVander Vorste, Ross
dc.contributor.authorWaltham, Nathan
dc.contributor.authorZoppini, Annamaria
dc.contributor.authorZarfl, Christiane
dc.date.accessioned2019-07-04T12:34:46Z
dc.date.available2019-07-04T12:34:46Z
dc.date.issued2019
dc.identifier.issn1354-1013
dc.identifier.doi10.1111/gcb.14537
dc.identifier.urihttp://hdl.handle.net/10072/384353
dc.description.abstractClimate change and human pressures are changing the global distribution and the extent of intermittent rivers and ephemeral streams (IRES), which comprise half of the global river network area. IRES are characterized by periods of flow cessation, during which channel substrates accumulate and undergo physico‐chemical changes (preconditioning), and periods of flow resumption, when these substrates are rewetted and release pulses of dissolved nutrients and organic matter (OM). However, there are no estimates of the amounts and quality of leached substances, nor is there information on the underlying environmental constraints operating at the global scale. We experimentally simulated, under standard laboratory conditions, rewetting of leaves, riverbed sediments, and epilithic biofilms collected during the dry phase across 205 IRES from five major climate zones. We determined the amounts and qualitative characteristics of the leached nutrients and OM, and estimated their areal fluxes from riverbeds. In addition, we evaluated the variance in leachate characteristics in relation to selected environmental variables and substrate characteristics. We found that sediments, due to their large quantities within riverbeds, contribute most to the overall flux of dissolved substances during rewetting events (56%–98%), and that flux rates distinctly differ among climate zones. Dissolved organic carbon, phenolics, and nitrate contributed most to the areal fluxes. The largest amounts of leached substances were found in the continental climate zone, coinciding with the lowest potential bioavailability of the leached OM. The opposite pattern was found in the arid zone. Environmental variables expected to be modified under climate change (i.e. potential evapotranspiration, aridity, dry period duration, land use) were correlated with the amount of leached substances, with the strongest relationship found for sediments. These results show that the role of IRES should be accounted for in global biogeochemical cycles, especially because prevalence of IRES will increase due to increasing severity of drying events.
dc.description.peerreviewedYes
dc.languageEnglish
dc.language.isoeng
dc.publisherWILEY
dc.relation.ispartofpagefrom1591
dc.relation.ispartofpageto1611
dc.relation.ispartofissue5
dc.relation.ispartofjournalGLOBAL CHANGE BIOLOGY
dc.relation.ispartofvolume25
dc.subject.fieldofresearchEnvironmental sciences
dc.subject.fieldofresearchBiological sciences
dc.subject.fieldofresearchcode41
dc.subject.fieldofresearchcode31
dc.titleSimulating rewetting events in intermittent rivers and ephemeral streams: A global analysis of leached nutrients and organic matter
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
gro.hasfulltextNo Full Text
gro.griffith.authorLeigh, Catherine
gro.griffith.authorBond, Nick R.
gro.griffith.authorBurrows, Ryan M.
gro.griffith.authorRolls, Rob J.
gro.griffith.authorMarshall, Jonathan C.
gro.griffith.authorSteward, Alisha L.


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