Thermal Seasonality of the High Mountain Belts of the Pyrenees

Barrio, Gabriel del; Creus, J.; Puigdefábregas, Juan

doi:10.2307/3673602

Cited by 82 publications

(57 citation statements)

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“…A las variaciones climáticas ligadas al eje longitudinal de la cadena hay que añadir las altitudinales, que pueden resumirse en un descenso de 0,6ºC en la temperatura media anual y un incremento de 100 mm de lluvia cada 100 m de ascenso en altitud. En consonancia, el período vegetativo disminuye con la altitud en ese mismo intervalo 11 días por año (Del Barrio et al, 1990). Por último, hay que señalar las variaciones a escala local impuestas por la topografía, que dan lugar a topoclimas y microclimas y, por ende, a la extraordinaria heterogeneidad del mosaico vegetal.…”

Section: Territorio De Estudiounclassified

Distribución espacial y análisis ambiental de la flora vascular de los Pirineos

Gómez

García

Font³

et al. 2017

Pirineos

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La reciente publicación web del Atlas de la flora vascular de los Pirineos permite ahora delimitar la diversidad florística de la cordillera y analizar su distribución territorial y algunas afinidades ambientales con el fin de contribuir a su caracterización ecológica y a su conservación. La flora vascular de los Pirineos reúne 3.652 plantas vasculares autóctonas, incluyendo especies y subespecies, lo que sitúa a la cordillera como el segundo núcleo de diversidad florística en Europa, tras los Alpes. Entre los seis sectores geográficos considerados, los que albergan mayor riqueza de plantas son el Central-Sur (76% del total) y los dos orientales (ambos con el 75%). En el gradiente altitudinal, el piso montano es el que alberga mayor número de taxones (87% del total). Respecto a la corología, el 32% de la flora pirenaica son plantas eurosiberianas, el 29% mediterráneas, las orófitas alpinas y boreoalpinas son el 12,6% y los endemismos un 5%. Por sus formas biológicas, predominan los hemicriptófitos (40%) y los terófitos (20,4%). Conforme se asciende en altitud, aumentan los caméfitos y disminuyen los terófitos. Por su preferencia edáfica, un 35% de la flora es calcícola y un 21% silicícola. En cuanto a la representación por hábitats, cerca del 30% de las plantas viven en pastos, el 16% en humedales, los ambientes rocosos, bosques, matorrales y comunidades ruderales albergan un número similar de plantas (entre el 12 y 13% cada uno). Por último, teniendo en cuenta la naturalidad de los hábitats, el 47% de las plantas vive en los de alta o muy alta naturalidad, aunque cerca de una cuarta parte se encuentra en los más humanizados.

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Section: Territorio De Estudiounclassified

Distribución espacial y análisis ambiental de la flora vascular de los Pirineos

Gómez

García

Font³

et al. 2017

Pirineos

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“…For the whole Pyrenean range, García-Ruiz et al (1985) estimated a gradient of 0.6ºC per 100 m of altitudinal increment and Del Barrio et al (1990) calculated a gradient of around 0.56ºC per 100 m. In the easternmost part of the study area, Lampre (1998) estimated a gradient of 0.49ºC per 100 m. Due to these differences, there is a remarkable variability in the location of different isotherms. Thus, the annual 0ºC isotherm was confined at 2726 m by Del Barrio et al (1990), at 2973 m by Chueca (1993) and at 2900 m by Lampre (1998). Between November and April, the 0ºC isotherm was around 1600-1700 m a.s.l.…”

Section: Al 2001mentioning

confidence: 99%

Influence of snow accumulation and snowmelt on streamflow in the central Spanish Pyrenees / Influence de l’accumulation et de la fonte de la neige sur les écoulements dans les Pyrénées centrales espagnoles

López‐Moreno

García‐Ruiz

2004

Hydrological Sciences Journal

110

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Results of studies related to the effect of snow accumulation and snowmelt on river regimes of the central Spanish Pyrenees are presented. Streamflow of the Pyrenean rivers is characterized by low and constant discharges during winter because of accumulation of snow in the basins above 1600 m a.s.l., and high and fluctuating discharges during spring due to snowmelt and rainfall. Regional discharge contrasts have been assessed in relation to the Atlantic influence and the percentage of high altitude areas in each basin. In most of the Pyrenean basins, snowmelt contributes more to the discharge than rainfall in the spring. The analysis of data shows a decrease in winter precipitation in the last 50 years causing a decrease in both winter and spring discharges and introducing changes in the distribution of streamflow throughout the year.

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“…[29] Spring and autumn are the wettest seasons, while summer exhibits a marked dry period. Mean lapse rates have been estimated between −0.0049 and −0.0056 • C m −1 [30,31], and the 0 • C isotherm at around 1700 m a.s.l. during the cold season (November-April).…”

Section: Site Of Studymentioning

confidence: 99%

Analysis and Predictability of the Hydrological Response of Mountain Catchments to Heavy Rain on Snow Events: A Case Study in the Spanish Pyrenees

Corripio¹,

López‐Moreno

2017

Hydrology

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From 18 to 19 June 2013, the Ésera river in the Pyrenees, Northern Spain, caused widespread damage due to flooding as a result of torrential rains and sustained snowmelt. We estimate the contribution of snow melt to total discharge applying a snow energy balance to the catchment. Precipitation is derived from sparse local measurements and the WRF-ARW model over three nested domains, down to a grid cell size of 2 km. Temperature profiles, precipitation and precipitation gradient are well simulated, although with a possible displacement regarding the observations. Snowpack melting was correctly reproduced and verified in three instrumented sites, and according to satellite images. We found that the hydrological simulations agree well with measured discharge. Snowmelt represented 33% of total runoff during the main flood event and 23% at peak flow. The snow energy balance model indicates that most of the energy for snow melt during the day of maximum precipitation came from turbulent fluxes. This approach forecast correctly peak flow and discharge during normal conditions at least 24 h in advance and could give an early warning of the extreme event 2.5 days before.

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Thermal Seasonality of the High Mountain Belts of the Pyrenees

Cited by 82 publications

References 0 publications

Distribución espacial y análisis ambiental de la flora vascular de los Pirineos

Distribución espacial y análisis ambiental de la flora vascular de los Pirineos

Influence of snow accumulation and snowmelt on streamflow in the central Spanish Pyrenees / Influence de l’accumulation et de la fonte de la neige sur les écoulements dans les Pyrénées centrales espagnoles

Analysis and Predictability of the Hydrological Response of Mountain Catchments to Heavy Rain on Snow Events: A Case Study in the Spanish Pyrenees

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