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Maite Meaurio

University of the Basque Country

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Sabine Sauvage

Laboratoire Écologie Fonctionnelle et Environnement

J.M. Sánchez-Pérez

Centre National de la Recherche Scientifique

Ane Zabaleta

University of the Basque Country

Iñaki Antigüedad

University of the Basque Country

Raghavan Srinivasan

Texas A&M University

Ainara Gredilla

University of the Basque Country

Juan Luis Lechuga-Crespo

University of the Basque Country

Alberto de Diego

University of the Basque Country

Aridane G. González

Universidad de Las Palmas de Gran Canaria

Laurie Boithias

Université Toulouse III - Paul Sabatier

Cooperative Institutions

University of the Basque Country

Centre National de la Recherche Scientifique

Université Toulouse III - Paul Sabatier

Institut de Recherche pour le Développement

Université de Toulouse

Laboratoire Écologie Fonctionnelle et Environnement

Institut National Polytechnique de Toulouse

Consejo Superior de Investigaciones Científicas

École Nationale Supérieure Agronomique de Toulouse

Géosciences Environnement Toulouse

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Hydrological Alteration Index as an Indicator of the Calibration Complexity of Water Quantity and Quality Modeling in the Context of Global Change

Roxelane Cakir Mélanie Raimonet Sabine Sauvage Javier Paredes-Arquiola Youen Grusson

Modeling is a useful way to understand human and climate change impacts on the water resources of agricultural watersheds. Calibration and validation methodologies are crucial in forecasting assessments. This study explores the best calibration methodology depending on the level of hydrological alteration due to human-derived stressors. The Soil and Water Assessment Tool (SWAT) model is used to evaluate hydrology in South-West Europe in a context of intensive agriculture and water scarcity. The Index of Hydrological Alteration (IHA) is calculated using discharge observation data. A comparison of two SWAT calibration methodologies are done; a conventional calibration (CC) based on recorded in-stream water quality and quantity and an additional calibration (AC) adding crop managements practices. Even if the water quality and quantity trends are similar between CC and AC, water balance, irrigation and crop yields are different. In the context of rainfall decrease, water yield decreases in both CC and AC, while crop productions present opposite trends (+33% in CC and −31% in AC). Hydrological performance between CC and AC is correlated to IHA: When the level of IHA is under 80%, AC methodology is necessary. The combination of both calibrations appears essential to better constrain the model and to forecast the impact of climate change or anthropogenic influences on water resources.

SWAT model

Water balance

10.3390/w12010115

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Citations (19)

Assessing the hydrological response from an ensemble of CMIP5 climate projections in the transition zone of the Atlantic region (Bay of Biscay)

Journal of Hydrology (2017)

Maite Meaurio Ane Zabaleta Laurie Boithias Ane Miren Epelde Sabine Sauvage

Baseline (sea)

Peninsula

10.1016/j.jhydrol.2017.02.029

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Citations (62)

Simplified vs extended in vitro methods for the evaluation of bioaccessibility of metals and metalloids present in urban recreational soils

Environmental Science and Pollution Research (2025)

Ainhoa Lekuona-Orkaizagirre Maite Meaurio Ainara Gredilla

Abstract Urban soils may contain different metals and metalloids and they can enter the human body by direct inhalation, ingestion or dermic absorption. According to USEPA, 200 mg·day −1 is the average daily ingested dose of soil for children aged from 1 to 12 years of age. In vitro bioaccessibility tests which are based on human physiology, have been used for the determination of the element fraction in soils that can be absorbed by human digestion. A total of 26 urban soils were collected in recreational areas from San Sebastian to evaluate the bioaccessibility of metals and metalloids (Al, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, As, Cd and Pb) by SBET (Simplified Bioaccessibility Extraction Test) and RIVM (Dutch National Institute for Public Health and Environment) in vitro methodologies. SBET simulates the gastric conditions, while RIVM simulates mouth, gastric and intestinal conditions. ICP-MS was used for the simultaneous determination of the elements. Cd showed the highest percentage of bioaccessibility by both methods and Fe, Al and Cr resulted the least bioaccessible elements. Pb and Zn showed different results in each method. HQ (Hazard Quotient), HI (Hazard Index) and CR (Carcinogenic Risk) values obtained were higher with SBET methodology. According to HI (considering 10 metal(loid)s), non-carcinogenic effects may occur to children with the ingestion of three of the studied children’s parks. Regarding CR index, all the studied soils were within the tolerable carcinogenic risk (considering Cr, As and Pb) for children, and the risk was sometimes negligible for adults. Considering the experimental difficulties related to RIVM, SBET method may be used for a simple and conservative first approach of the bioaccessibility of metals and metalloids accumulated in soil samples.

Metalloid

Hazard quotient

Soil test

10.1007/s11356-025-36017-y

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Citations (0)

Evaluation of SWAT models performance to simulate streamflow spatial origin. The case of a small forested watershed

Journal of Hydrology (2015)

Maite Meaurio Ane Zabaleta Jesús A. Uriarte Raghavan Srinivasan Iñaki Antigüedad

SWAT model

Base flow

Time of concentration

Hydrological modelling

10.1016/j.jhydrol.2015.03.050

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Citations (82)

Long-term and event-scale sub-daily streamflow and sediment simulation in a small forested catchment

Hydrological Sciences Journal (2021)

Maite Meaurio Ane Zabaleta Raghavan Srinivasan Sabine Sauvage J.M. Sánchez-Pérez

In small catchments, the time interval most commonly used for simulation – daily or monthly – may not be sufficient to accurately capture the time distribution of hydrological processes. In this paper, the Soil and Water Assessment Tool (SWAT) was used to perform an hourly long-term streamflow and sediment load simulation in the small (4.8 km2) and forested Aixola catchment (northern Spain). From this simulation, 10 runoff events were tested; the most satisfactory results for streamflow were obtained under wet antecedent conditions. However, simulated sediment load was underestimated during the peaks and remained high towards the end of the event. Furthermore, the influence of the precipitation time step (1–4 h, daily) was not relevant in the streamflow simulation but does influence the sediment simulation. The best results were achieved with the daily step simulations obtained at an hourly time step. This paper shows that sub-daily modelling improves water and especially sediment yield results; however, improvements are still needed in timing-related routines.

SWAT model

10.1080/02626667.2021.1883620

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Citations (6)

Metals and metalloids in high-altitude Pyrenean lakes: sources and distribution in pre-industrial and modern sediments

Environmental Science and Pollution Research (2023)

Azibar Rodríguez-Iruretagoiena Ainara Gredilla Silvia Fdez‐Ortiz de Vallejuelo Gorka Arana Maite Meaurio

Abstract High-altitude Pyrenean lakes are ecosystems far from local pollution sources, and thus they are particularly sensitive to the atmospheric deposition of metals and metalloids. This study aims to quantify the effect of human activity in 18 lakes located in both side of the France–Spain frontier. Sediment cores were collected in summer 2013, sampled at a 1cm resolution and the concentration of 24 elements was measured by ICP-MS. Statistic and chemometric analysis of the results highlights the influence of the geographical position and lithogenic features of each lake basin on trapping pollutants. More than the 80% of the lakes showed values of enrichment factor (EF) above 2 for at least one of the elements investigated in at least one core interval, which corroborates the existence of historical anthropogenic inputs of elements in the studied area. The results demonstrate the natural origin of As and Ti in Pyrenees, together with the significant anthropogenic inputs of Cd, Pb, Sb and Sn from ancient times. The data set points mining activities as the main historical source of pollution and illustrate the large impact of the industrial revolution. The regional variability could reflect also differential long-range transport, followed by dry or wet deposition.

Deposition

Sediment core

Metalloid

Enrichment factor

10.1007/s11356-023-28347-6

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Citations (3)

Modelling the impact of climate and land cover change on hydrology and water quality in a forest watershed in the Basque Country (Northern Spain)

Ecological Engineering (2018)

M. Peraza-Castro Estilita Ruiz‐Romera Maite Meaurio Sabine Sauvage J.M. Sánchez-Pérez

Clearcutting

Representative Concentration Pathways

Baseline (sea)

10.1016/j.ecoleng.2018.07.016

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Citations (27)