| Authors | Yves Tramblay , Agnieszka Rutkowska , Eric Sauquet , Catherine Sefton , Gregor Laaha , Marzena Osuch , Teresa Albuquerque , Maria Helena Alves , Kazimierz Banasik , Aurelien Beaufort , Luca Brocca , Stefania Camici , Zoltán Csabai , Hamouda Dakhlaoui , Anna Maria DeGirolamo , Gerald Dörflinger , Francesc Gallart , Tobias Gauster , Lahoucine Hanich , Silvia Kohnová , Luis Mediero , Ninov Plamen , Simon Parry , Pere Quintana-Seguí , Ourania Tzoraki & Thibault Datry |
| Text | 438326 2021 10.1080/02626667.2020.1849708 Europeintermittent ephemeral rivers trends SPEI seasonality zero flows Trends in flow intermittence for European rivers Yves Tramblay , Agnieszka Rutkowska , Eric Sauquet , Catherine Sefton , Gregor Laaha , Marzena Osuch , Teresa Albuquerque , Maria Helena Alves , Kazimierz Banasik , Aurelien Beaufort , Luca Brocca , Stefania Camici , Zoltan Csabai , Hamouda Dakhlaoui , Anna Maria DeGirolamo , Gerald Dorflinger , Francesc Gallart , Tobias Gauster , Lahoucine Hanich , Silvia Kohnova , Luis Mediero , Ninov Plamen , Simon Parry , Pere Quintana Segui , Ourania Tzoraki Thibault Datry HydroSciences Montpellier, University of Montpellier, CNRS, IRD, France University of Agriculture in Krakow, Krakow, Poland Departement Eaux Unite de recherche RiverLy, INRAE, Lyon Villeurbanne, France UK Centre for Ecology and Hydrology UKCEH , Wallingford, UK University of Natural Resources and Life Sciences, BOKU, Vienna, Austria Department of Hydrology and Hydrodynamics, Institute of Geophysics, Polish Academy of Sciences, Warsaw, Poland IPCB Cernas QRural and ICT University of Évora, Evora, Portugal Portuguese Environment Agency, Lisbon, Portugal Warsaw University of Life Sciences SGGW, Warsaw, Poland National Research Council Research Institute of Geo Hydrological Protection IRPI CNR , Perugia, Italy Department of Hydrobiology, University of Pecs, Pecs, Hungary Department of Botany and Zoology, Masaryk University, Brno, Czech Republic Laboratoire de Modelisation en Hydraulique et Environnement LMHE , Ecole Nationale des Ingenieurs de Tunis ENIT , Tunis, Tunisia Istituto di ricerca sulle acque, Consiglio Nazionale delle Ricerche CNR , Rome, Italy Water Development Department, Nicosia, Cyprus IDAEA, CSIC, Barcelona, Spain L3G Laboratory, Earth Sciences Department, Faculty of Sciences Techniques, Cadi Ayyad University, Marrakech, Morocco Centre for Remote Sensing and Application, Mohammed VI Polytechnic University UM6P , Morocco Slovak Department of Land and Water Resources Management, Faculty of Civil Engineering, University of Technology, Bratislava, Slovakia Intermittent rivers are prevalent in many countries across Europe, but little is known about the temporal evolution of intermittence and its relationship with climate variability. Trend analysis of the annual and seasonal number of zero flow days, the maximum duration of dry spells and the mean date of the zero flow events, is performed on a database of 452 rivers with varying degrees of intermittence between 1970 and 2010. The relationships between flow intermittence and climate are investigated using the standardized precipitation evapotranspiration index SPEI and climate indices describing large scale atmospheric circulation. The results indicate a strong spatial variability of the seasonal patterns of intermittence and the annual and seasonal number of zero flow days, highlighting the controls exerted by local catchment properties. Most of the detected trends indicate an increasing number of zero flow days, which also tend to occur earlier in the year, particularly in southern Europe. The SPEI is found to be strongly related to the annual and seasonal zero flow day occurrence in more than half of the stations for different accumulation times between 12 and 24 months. Conversely, there is a weaker dependence of river intermittence with large scale circulation indices. Overall, these results suggest increased water stress in intermittent rivers that may affect their biota and biochemistry and also reduce available water resources. Preprint Trends in flow intermittence for European rivers Accepted_Trends in flow intermittence for European rivers.pdf Articolo in rivista Taylor Francis 2150 3435 Hydrological sciences journal Online Hydrological sciences journal Online Hydrol. sci. j. Online Hydrological sciences journal Online Journal des sciences hydrologiques Online annamaria.degirolamo DE GIROLAMO ANNA MARIA luca.brocca BROCCA LUCA stefania.camici CAMICI STEFANIA |
