Efecto de los embalses en el control de las avenidas en el Pirineo Central Español

Moreno, Juan Ignacio López; Beguerı́a, Santiago; García‐Ruiz, José María

doi:10.26754/ojs_geoph/geoph.2003441351

Cited by 3 publications

(3 citation statements)

References 13 publications

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“…Table 2.2). Data were normalised to a reference altitude of 1400 m based on an atmospheric annual temperature lapse rate and precipitation gradient set to 0.63 °C•100 m -1 and 46 mm•100 m -1 , respectively (López- Moreno, 2006), thus generating spatially-averaged values of CPM and MMT (see Suppl. Table 2.3).…”

Section: Glaciological and Paleoclimate Modelingmentioning

confidence: 99%

Climatic conditions between 19 and 12 ka in the eastern Pyrenees, and wider implications for atmospheric circulation patterns in Europe

Reixach

Delmas

Braucher

et al. 2021

Quaternary Science Reviews

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Section: Glaciological and Paleoclimate Modelingmentioning

confidence: 99%

Climatic conditions between 19 and 12 ka in the eastern Pyrenees, and wider implications for atmospheric circulation patterns in Europe

Reixach

Delmas

Braucher

et al. 2021

Quaternary Science Reviews

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“…The substantially lower storage volumes of these reservoirs may not be the only responsible for these results. Other dam uses (e.g., Bubal, Lanuza, and Escales are also used for flood control and hydropower production; López Moreno et al, 2016) might also contribute to the observed differences. Accordingly, we found that HIs associated with hydropower, such as nPos and nNeg, were significantly altered in the Pyrenees, in agreement with previous studies (Almeida et al, 2020;Chalise et al, 2021;Pompeu et al, 2022b).…”

Section: Abiotic Changes Associated With Damsmentioning

confidence: 99%

Effects of irrigation dams on riverine biota in mountain streams

Rocha Pompeu,

Peñas,

Barquín

2024

Front. Environ. Sci.

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Mountain streams harbor unique biodiversity and provide essential ecosystem services to human societies. Yet, these ecosystems face numerous threats, such as the construction of dams and land use changes, leading to rapid habitat degradation, water pollution, and biodiversity loss. In this study, we assess the effect of irrigation dams on mountain riverine biota using traditional biotic indices and trait-based approaches. We selected diatom and macroinvertebrate communities surveyed between 2015 and 2017 in mountain streams located in different regions in northern Spain (Cantabrian Cordillera, Iberian System, and Pyrenees) under natural and altered flow conditions (i.e., downstream of irrigation dams). Hydrological and biological changes related to the presence of dams, the mountain range, and the interaction between these two factors were identified. Summer flows, frequency of high flow events, and minimum annual flows timing were significantly affected by irrigation dams, independently of the region. Winter flows, the magnitude of high flow extremes, and the number of flow rises and falls varied significantly with the dam-mountain range interaction. The frequency and duration of flow pulses depended on the mountain range only. In the Cantabrian Cordillera, a region with larger reservoirs (>150 hm3), impacted sites showed a marked inversion of the seasonal flow patterns (i.e., increased summer flows but reduced winter flows). In the other mountain ranges, reservoirs had smaller storage volumes and multiple purposes, causing significant flow change frequency variations. Diatom traits, taxonomic richness, diversity, and IPS score varied with dam presence and mountain ranges, while macroinvertebrate traits and biotic indices responded weakly. These findings suggest that diatom communities might be more sensitive to hydrological alteration, while macroinvertebrates might be more influenced by space-related factors, such as biogeography and dispersal, overriding dam-related impacts. Furthermore, dam-related changes in ecosystems may depend not only on the presence of dams and their characteristics (e.g., reservoir size and operation), but also on local conditions and biogeography. Our findings emphasize that, when using pre-existing biomonitoring datasets, although some dam-related patterns emerge (e.g., with diatoms), other patterns may be constrained by the datasets’ low spatio-temporal coverage and taxonomic resolution, highlighting the need of well-structured study designs.

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“…The temperature gradient proposed for the entire Pyrenean range varies according to the author: 0.6 (García-Ruiz et al 1986), 0.68 (Del Barrio et al 1990) and 0.63°C/100 m (López-Moreno 2006). Based on these gradients, the annual 0°C isotherm is located around 2900 m (Chueca-Cía et al 2003).…”

Section: Study Areamentioning

confidence: 99%

Changes in Climate, Snow and Water Resources in the Spanish Pyrenees: Observations and Projections in a Warming Climate

Morán-Tejéda

López‐Moreno

Sanmiguel‐Vallelado

2017

Advances in Global Change Research

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The Pyrenees constitute one of the greatest sources of freshwater in the Spanish territory, but, like many other mountain systems in the world, they are subject to environmental changes that ultimately affect the availability of water resources in areas downstream. In this study, we offer an assessment of hydrological changes in the Pyrenees, from a warming climate perspective, including climate and snow cover trends, changes in the timing of river flows, and future changes under climate change scenarios. Overall, we found that increasing temperatures are responsible for a lesser accumulation of snow over time, although with spatial differences. As a consequence, the occurrence of spring flows (that largely depend on snowmelt) on the studied rivers, has shifted earlier by approximately one month (from mid-June to mid-May). Future projections, which are made by coupling regional climate models outputs and hydrological modelling, indicate that observed decrease in snow accumulation and shifts in streamflow timing will exacerbate in a warmer short-term future (2050). The amount of water yields will not change significantly, only will suffer a slight decrease due to increased evapotranspiration. Observed and projected hydrological changes must be considered by water managers and environmental technicians if a sustainable management of the water resource and the mountain territory is to be done.

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Efecto de los embalses en el control de las avenidas en el Pirineo Central Español

Cited by 3 publications

References 13 publications

Climatic conditions between 19 and 12 ka in the eastern Pyrenees, and wider implications for atmospheric circulation patterns in Europe

Climatic conditions between 19 and 12 ka in the eastern Pyrenees, and wider implications for atmospheric circulation patterns in Europe

Effects of irrigation dams on riverine biota in mountain streams

Changes in Climate, Snow and Water Resources in the Spanish Pyrenees: Observations and Projections in a Warming Climate

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