Hydrological response of Mediterranean headwaters to climate oscillations and land-cover changes: The mountains of Duero River basin (Central Spain)

Morán-Tejéda, Enrique; Barbancho, Antonio Ceballos; Llorente-Pinto, José Manuel

doi:10.1016/j.gloplacha.2010.03.003

Cited by 103 publications

(77 citation statements)

References 46 publications

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“…The nonlinear relationship between rainfall and hydrological parameters corroborated the high variability of hydrological response in Mediterranean agroforestry watersheds (Cosandey et al 2005, Estrany et al 2010, Morán et al 2010. It is well known that the composition and type of land use within the watershed determine the most relevant parameters of the discharge originating from a variety of rainfall episodes.…”

Section: Relationships Among Hydrosedimentary Parameterssupporting

confidence: 67%

Runoff and sediment yield from a small watershed in southeastern Spain (Lanjarón): implications for water quality

Zuazo

Martínez

García-Tejero

et al. 2012

Hydrological Sciences Journal

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sediment yield from a small watershed in southeastern Spain (Lanjarón): implications for water quality. Hydrological Sciences Journal, 57 (8), 1610-1625. Abstract This study presents an analysis of three hydrological years (2007/08, 2008/09 and 2009/10) of precipitation, runoff and sediment yield collected from a small (669.7 ha) semi-arid watershed in southeastern Spain (Lanjarón). At the watershed outlet the runoff, suspended sediment concentration, total solute concentrations and dissolved nutrients (N-NO 3 , N-NH 4 , H 2 PO 4 and K) in streamflow were continuously monitored. The runoff was highly variable, ranging between 53.4 and 154.7 mm year -1 , with an average of 97.6 mm year -1 . In contrast, sediment yields were more regular, averaging 1.8 Mg ha -1 year -1 . The hydrological response of the watershed depended mainly on rainfall intensity. Formerly, 32% of the watershed was forested and runoff was more regular, despite the typical Mediterranean rainfall cycle; however, due to forest area reduction to 17% and the increase in abandoned farmland area (18%) in recent decades, the runoff variability has increased. Greater amounts of solutes (32.7 Mg ha -1 year -1 ) were exported, so that this water is considered as poor for irrigation use. The temporal nutrient export was related to seasonal discharge fluctuations as well as daily concentrations. In addition, the nutrient concentrations of the water discharged were lower than threshold limits cited in water-quality standards for agricultural use and for potable water, with the exception of K (65.9 mg L -1 ), which may degrade surface waters as well as irrigated soils. Thus, hydrological and erosive processes depended on the watershed features, but also on prior conditions in combination with the characteristics of rainfall episodes. Runoff and sediment yield from a small watershed in southeastern Spain 1611 qualité de l'eau pour un usage agricole ainsi que pour l'eau potable, à l'exception de K (65,9 mg L -1 ), ce qui peut dégrader les eaux de surface ainsi que les sols irrigués. Ainsi, les processus hydrologiques et érosifs dépendent des caractéristiques du bassin, mais aussi des conditions antérieures, combinées aux caractéristiques des épisodes pluvieux.

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Section: Relationships Among Hydrosedimentary Parameterssupporting

confidence: 67%

Runoff and sediment yield from a small watershed in southeastern Spain (Lanjarón): implications for water quality

Zuazo

Martínez

García-Tejero

et al. 2012

Hydrological Sciences Journal

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“…A number of downstream reservoirs collect water for a variety of purposes, giving rise to relatively high rates of impoundment at the outlet of the river. In previous studies of the Duero basin, we demonstrated negative trends in river discharges in relation to atmospheric variables and land-cover changes (Ceballos-Barbancho et al 2008, Morán-Tejeda et al 2010. Nevertheless, changes in the most extreme flow episodes remain unidentified.…”

Section: Introductionmentioning

confidence: 51%

“…As for the high flows, the most obvious and significant trends in low flows were evident in spring and summer. These results need to be considered in the context of decreasing water resources in the Duero basin (Ceballos-Barbancho et al 2008, Morán-Tejeda et al 2010, other parts of Spain (López-Moreno et al 2008), and other countries in the Mediterranean region, including: Turkey (Kahya and Kalayci 2004), the south of France (Lespinas et al 2010) and Greece (Mavromatis and Stathis 2010). These studies have highlighted a generalized reduction in river discharges and runoff during the last 50 years that has often been accompanied by changes in the seasonality of the river regimes.…”

Section: Discussionmentioning

confidence: 99%

“…Studies in experimental catchments have shown that land and forest cover affect the water balance by enhancing infiltration, interception and evapotranspiration (Crockford and Richardson 2000, Zhang et al 2001a, Llorens and Domingo 2007, and any change of land use resulting in an increase in vegetation cover usually causes a decrease in runoff, while removal of vegetation tends to increase the flow of rivers in basins (Bosch andHewlett 1982, Bent 2001). Morán-Tejeda et al (2010, 2011a recently demonstrated that there has been a significant expansion of land cover in headwaters of the Duero basin during the past 50 years. Specifically, they documented an increase of the forested area of around 31% in the mountains of the north of the basin and around 18% in the southern headwaters.…”

Section: Discussionmentioning

confidence: 99%

“…Together with forestation based on pine species, this has caused a marked expansion of land cover and forested area, which is thought to be affecting the hydrological functioning of the headwaters (CeballosBarbancho et al 2008, Morán-Tejeda et al 2010.…”

Section: Study Areamentioning

confidence: 99%

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The contrasted evolution of high and low flows and precipitation indices in the Duero basin (Spain)

Morán-Tejéda

López‐Moreno

Vicente‐Serrano

et al. 2012

Hydrological Sciences Journal

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Numerical simulations of snowfall events: Sensitivity analysis of physical parameterizations

et al. 2015

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Accurate estimation of snowfall episodes several hours or even days in advance is essential to minimize risks to transport and other human activities. Every year, these episodes cause severe traffic problems on the northwestern Iberian Peninsula. In order to analyze the influence of different parameterization schemes, 15 snowfall days were analyzed with the Weather Research and Forecasting (WRF) model, defining three nested domains with resolutions of 27, 9, and 3 km. We implemented four microphysical parameterizations (WRF Single‐Moment 6‐class scheme, Goddard, Thompson, and Morrison) and two planetary boundary layer schemes (Yonsei University and Mellor‐Yamada‐Janjic), yielding eight distinct combinations. To validate model estimates, a network of 97 precipitation gauges was used, together with dichotomous data of snowfall presence/absence from snowplow requests to the emergency service of Spain and observatories of the Spanish Meteorological Agency. The results indicate that the most accurate setting of WRF for the study area was that using the Thompson microphysical parameterization and Mellor‐Yamada‐Janjic scheme, although the Thompson and Yonsei University combination had greater accuracy in determining the temporal distribution of precipitation over 1 day. Combining the eight deterministic members in an ensemble average improved results considerably. Further, the root mean square difference decreased markedly using a multiple linear regression as postprocessing. In addition, our method was able to provide mean ensemble precipitation and maximum expected precipitation,which can be very useful in the management of water resources. Finally, we developed an application that allows determination of the risk of snowfall above a certain threshold.

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Hydrological response of Mediterranean headwaters to climate oscillations and land-cover changes: The mountains of Duero River basin (Central Spain)

Cited by 103 publications

References 46 publications

Runoff and sediment yield from a small watershed in southeastern Spain (Lanjarón): implications for water quality

Runoff and sediment yield from a small watershed in southeastern Spain (Lanjarón): implications for water quality

The contrasted evolution of high and low flows and precipitation indices in the Duero basin (Spain)

Numerical simulations of snowfall events: Sensitivity analysis of physical parameterizations

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