Scheda di dettaglio – i prodotti della ricerca
| Dato | Valore |
|---|---|
| Title | Assessing flow regime alterations in a temporary river - the River Celone case study |
| Abstract | Abstract: In this paper, we present an approach to evaluate the hydrological alterations of a temporary river. In these rivers, it is expected that anthropogenic pressures largely modify low-flow components of the flow regime with consequences for aquatic habitat and diversity in invertebrate species. First, by using a simple hydrological index (IARI) river segments of the Celone stream (southern Italy) whose hydrological regime is significantly influenced by anthropogenic activities have been identified. Hydrological alteration has been further classified through the analysis of two metrics: the degree (Mf) and the predictability of dry flow conditions (Sd6). Measured streamflow data were used to calculate the metrics in present conditions (impacted). Given the lack of data from pristine conditions, simulated streamflow time series were used to calculate the metrics in reference conditions. The Soil and Water Assessment Tool (SWAT) model was used to estimate daily natural streamflow. Hydrological alterations associated with water abstractions, point discharges and the presence of a reservoir were assessed by comparing the metrics (Mf, Sd6) before and after the impacts. The results show that the hydrological regime of the river segment located in the upper part of the basin is slightly altered, while the regime of the river segment downstream of the reservoir is heavily altered. This approach is intended for use with ecological metrics in defining the water quality status and in planning streamflow management activities. |
| Source | Journal of hydrology and hydromechanics (Online) 63 (3), pp. 236–272 |
| Keywords | Natural hydrological regime; Temporary stream; Hydrological modelling; Indicators of hydrological alteration |
| Journal | Journal of hydrology and hydromechanics (Online) |
| Editor | Veda - vydavatelstvo SAV,, Bratislava, Slovacchia |
| Year | 2015 |
| Type | Articolo in rivista |
| DOI | 10.1515/johh-2015-0027 |
| Authors | Anna Maria De Girolamo, Antonio Lo Porto, Giuseppe Pappagallo, Francesc Gallart |
| Text | 331561 2015 10.1515/johh 2015 0027 Natural hydrological regime; Temporary stream; Hydrological modelling; Indicators of hydrological alteration Assessing flow regime alterations in a temporary river the River Celone case study Anna Maria De Girolamo, Antonio Lo Porto, Giuseppe Pappagallo, Francesc Gallart 1 Water Research Institute, National Research Council, Francesco De Blasio 5, 70132 Bari, Italy. 2 Institute of Environmental Assessment and Water Research, Spanish National Research Council, Jordi Girona 18, 08034 Barcelona, Spain. Abstract In this paper, we present an approach to evaluate the hydrological alterations of a temporary river. In these rivers, it is expected that anthropogenic pressures largely modify low flow components of the flow regime with consequences for aquatic habitat and diversity in invertebrate species. First, by using a simple hydrological index IARI river segments of the Celone stream southern Italy whose hydrological regime is significantly influenced by anthropogenic activities have been identified. Hydrological alteration has been further classified through the analysis of two metrics the degree Mf and the predictability of dry flow conditions Sd6 . Measured streamflow data were used to calculate the metrics in present conditions impacted . Given the lack of data from pristine conditions, simulated streamflow time series were used to calculate the metrics in reference conditions. The Soil and Water Assessment Tool SWAT model was used to estimate daily natural streamflow. Hydrological alterations associated with water abstractions, point discharges and the presence of a reservoir were assessed by comparing the metrics Mf, Sd6 before and after the impacts. The results show that the hydrological regime of the river segment located in the upper part of the basin is slightly altered, while the regime of the river segment downstream of the reservoir is heavily altered. This approach is intended for use with ecological metrics in defining the water quality status and in planning streamflow management activities. 63 Published version Assessing flow regime alterations in a temporary river the River Celone case study 2015_63_3_DeGirolamo_263_JHH.pdf Articolo in rivista Veda vydavatelstvo SAV, 1338 4333 Journal of hydrology and hydromechanics Online Journal of hydrology and hydromechanics Online J. Hydrol. hydromech. Online Journal of hydrology and hydromechanics. Online antonio.loporto LO PORTO ANTONIO annamaria.degirolamo DE GIROLAMO ANNA MARIA giuseppe.pappagallo PAPPAGALLO GIUSEPPE TA.P04.005.006 Gestione a scala di bacino delle risorse idriche e sostenibilita dell uso irriguo in agricoltura |