Late Miocene vegetation and climate of the La Cerdanya Basin (eastern Pyrenees, Spain)

Barrón, Eduardo; Mijarra, José María Postigo; Casas‐Gallego, Manuel

doi:10.1016/j.revpalbo.2016.08.007

Cited by 14 publications

(47 citation statements)

References 42 publications

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“…On a more local scale, the Romadriu river and its tributaries, like those of the Portainé basin, originated high reliefs (500-1000 m) with narrow valleys and steep slopes (see Section 1.2.). Furthermore, during the Late Miocene, the paleoclimate was warm and humid, [32], favouring intense chemical weathering.…”

Section: Evolution Of the Area And Present Featuresmentioning

confidence: 99%

Flood Consequences of Land-Use Changes at a Ski Resort: Overcoming a Geomorphological Threshold (Portainé, Eastern Pyrenees, Iberian Peninsula)

Furdada

Victoriano

Díez‐Herrero

et al. 2020

Water

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The sensitive mountain catchment of Portainé (Eastern Pyrenees, Iberian Peninsula) has recently experienced a significant change in its torrential dynamics due to human disturbances. The emplacement of a ski resort at the headwaters led to the surpassing of a geomorphological threshold, with important consequences during flood events. Consequently, since 2008, channel dynamics have turned into sediment-laden, highly destructive torrential flows. In order to assess this phenomenon and o acquire a holistic understanding of the catchment’s behaviour, we carried out a field work-based multidisciplinary study. We considered the interaction of the various controlling factors, including bedrock geology, geomorphological evolution, derived soils and coluvial deposits, rainfall patterns, and the hydrological response of the catchment to flood events. Moreover, anthropogenic land-use changes, its consequential hydrogeomorphic effects and the role of vegetation were also taken into account. Robust sedimentological and geomorphological evidence of ancient dense debris flows show that the basin has shifted around this threshold, giving rise to two different behaviours or equilibrium conditions throughout its history: alternating periods of moderate, bedload-laden flows and periods of high sediment-laden debris flow dynamics. This shifting could have extended through the Holocene. Finally, we discuss the possible impact of climate and global change, as the projected effects suggest future soil and forest degradation; this, jointly with more intense rainfalls in these mountain environments, would exacerbate the future occurrence of dense sediment-laden flows at Portainé, but also in other nearby, similar basins.

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Section: Evolution Of the Area And Present Featuresmentioning

confidence: 99%

Flood Consequences of Land-Use Changes at a Ski Resort: Overcoming a Geomorphological Threshold (Portainé, Eastern Pyrenees, Iberian Peninsula)

Furdada

Victoriano

Díez‐Herrero

et al. 2020

Water

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“…2500 m.a.s.l, and the coeval coastal localities. Barrón et al (2010Barrón et al ( , 2016 estimated the earlyTortonian and early Messinian palaeoclimate of La Cerdanya, using the Coexistence Approach (CA) with palynomorphs and macrofloral remains. They concluded that there were no significant changes to the plant composition in La Cerdanya across that time span.…”

Section: Introductionmentioning

confidence: 99%

CLAMP-based palaeoclimatic analysis of the late Miocene (Tortonian) flora from La Cerdanya Basin of Catalonia, Spain, and an estimation of the palaeoaltitude of the eastern Pyrenees

Tosal

Verduzco

Martı́n-Closas

2021

Palaeogeography, Palaeoclimatology, Palaeoecology

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“…The replacement of Normapolles by pollen morphologically more akin to those produced by modern members of Fagales (e.g., Momipites, Caryapollenites) started during the Maastrichtian and intensified during the Paleogene. In Iberia, Fagales represented a significant component of palynofloras during the Neogene (e.g., 38 and 18 pollen species were respectively recorded in the Oligocene of NW Spain and the late Miocene of SE Pyrenees; Barrón et al, 2016, Casas-Gallego, 2018. Modern representatives are dispatched in eight families (Angiosperm Phylogeny Group, 2016) mainly distributed in the Northern Hemisphere, where they constitute the principal elements of the temperate and cool/cold deciduous and mixed forests.…”

Section: The Presence Of Normapolles In Chera and Their Significance In Late Cretaceous Floras Of Iberiamentioning

confidence: 99%

Vegetational composition of the Upper Cretaceous vertebrate site of Chera (Valencia, Spain) and its significance in mosaic vegetation from southwestern Europe

Peyrot

Barrón

Suberbiola

2020

Cretaceous Research

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Late Miocene vegetation and climate of the La Cerdanya Basin (eastern Pyrenees, Spain)

Cited by 14 publications

References 42 publications

Flood Consequences of Land-Use Changes at a Ski Resort: Overcoming a Geomorphological Threshold (Portainé, Eastern Pyrenees, Iberian Peninsula)

Flood Consequences of Land-Use Changes at a Ski Resort: Overcoming a Geomorphological Threshold (Portainé, Eastern Pyrenees, Iberian Peninsula)

CLAMP-based palaeoclimatic analysis of the late Miocene (Tortonian) flora from La Cerdanya Basin of Catalonia, Spain, and an estimation of the palaeoaltitude of the eastern Pyrenees

Vegetational composition of the Upper Cretaceous vertebrate site of Chera (Valencia, Spain) and its significance in mosaic vegetation from southwestern Europe

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