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Mª Luz Rodríguez-Blanco
Departamento de Historia, Arte y Geografía, Grupo de Estudios de Arqueología, Antigüedade e Territorio GEAAT, Universidad de Vigo, Campus As Lagoas, 36310 Ourense, España
Mª Mercedes Taboada-Castro
ETSIIAA, Área de Edafología y Química Agrícola, Universidad de Valladolid, 34004 Palencia, España
Mª Teresa Taboada-Castro
3Facultad de Ciencias, Centro de Investigaciones Científicas Avanzadas (CICA), Universidade da Coruña 15071 A Coruña, España
Vol. 42 (2020), Articles, pages 193-208
Submitted: Dec 17, 2020 Published: Dec 28, 2020
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The trends analysis of hydroclimatic variables (rainfall, temperature, streamflow) in headwater catchments provides basic scientific criteria necessary for water resource planning and management. However, relatively few studies have been carried out in these relatively near-natural systems, i.e. with little or no alteration by humans. In this context, the overall aim of the present study is to characterize the recent trend of stream discharge in a headwater catchment of the Mero Basin (NW Spain). The results showed no significant decrease in annual stream discharge. However, a significant decrease in summer and autumn stream discharge and an increase in the duration and severity of low flow was detected. In this study, a parallelism between hydrological processes and rainfall was not appreciated. So, the trends observed for streamflow are probably related to upward trend in temperature, by enhancing evapotranspiration.

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