Flow regime patterns and their controlling factors in the Ebro basin (Spain)

Bejarano Carrión, María Dolores; Marchamalo Sacristán, Miguel; García de Jalón Lastra, Diego y Gonzalez del Tanago del Rio, Marta (2010). Flow regime patterns and their controlling factors in the Ebro basin (Spain). "Journal of Hydrology", v. 385 (n. 1-4); pp. 323-335. ISSN 0022-1694. https://doi.org/10.1016/j.jhydrol.2010.03.001.

Descripción

Título: Flow regime patterns and their controlling factors in the Ebro basin (Spain)
Autor/es:
  • Bejarano Carrión, María Dolores
  • Marchamalo Sacristán, Miguel
  • García de Jalón Lastra, Diego
  • Gonzalez del Tanago del Rio, Marta
Tipo de Documento: Artículo
Título de Revista/Publicación: Journal of Hydrology
Fecha: Mayo 2010
Volumen: 385
Materias:
Palabras Clave Informales: Flow regime, Reference conditions, Hydrologic alteration, Flow classification, Prediction, Fluvial restoration
Escuela: E.T.S.I. Caminos, Canales y Puertos (UPM)
Departamento: Ingeniería y Morfología del Terreno
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

Natural intra-annual flow fluctuations vary between rivers, being a determining factor for aquatic insects, fish and riparian communities which are adapted to the habitat conditions and different flows throughout the seasons. Moreover, restoration of seasonal flow patterns plays an important role in achieving good ecological status of rivers, through the preservation and/or recovery of components and processes of natural river ecosystems. In this work we: (a) classify fluvial segments in the Ebro basin (North-Eastern Spain) according to the intra-annual variability of flows under natural conditions using statistical cluster analysis of monthly mean flow data; (b) characterise the resulting flow typologies according to several ecologically important hydrological variables; (c) analyse the relationships between flow regimes of fluvial segments and physical variables from their catchments; and finally (d) predict the most probable natural flow regime using logistic models based on the most determinant physical characteristics. Fifteen natural flow typologies were described in the Ebro basin, which were characterised in terms of flow fluctuation through the year as well as timing, flow ratio and duration of the maximum and minimum flows. Precipitation, biogeography and geology of catchments showed the highest correlations with flow regimes. Basin size, mean elevation and slope were also correlated. The logistic model we developed had a prediction success of 72% in the Ebro basin. The definition of the natural hydrological conditions (to which the biological communities are tailored), even when flow data are not available, is an important support in the management of river ecosystems. It is especially suitable for setting goals in aquatic ecosystem conservation or restoration projects.

Más información

ID de Registro: 8627
Identificador DC: http://oa.upm.es/8627/
Identificador OAI: oai:oa.upm.es:8627
Identificador DOI: 10.1016/j.jhydrol.2010.03.001
URL Oficial: http://www.sciencedirect.com/science/journal/00221694
Depositado por: Memoria Investigacion
Depositado el: 08 Ago 2011 10:32
Ultima Modificación: 20 Abr 2016 17:20
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