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Cuadernos de Investigación Geográfica
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Cuadernos de Investigación Geográfica
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DIGITAL.CSIC
Article . 2013 . Peer-reviewed
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Historia del fuego y la vegetación en una secuencia holocena del Pirineo central: la Basa de la Mora

Authors: Lasheras Álvarez, Laura; Pérez-Sanz, Ana; Gil-Romera, Graciela; González-Sampériz, Penélope; Sevilla-Callejo, Miguel; Valero-Garcés, Blas L.;

Historia del fuego y la vegetación en una secuencia holocena del Pirineo central: la Basa de la Mora

Abstract

La importancia del estudio de la actividad del fuego en el pasado está en la necesidad de comprender los efectos que el Cambio Global puede tener sobre la misma, tanto en la actualidad como en el futuro. Estudiar cómo se relaciona el fuego con los ecosistemas y el clima en escalas temporales lo suficientemente largas permite conocer la respuesta de la vegetación a esta perturbación y definir los umbrales que provocan cambios irreversibles en la composición vegetal. Este trabajo estudia la dinámica del fuego durante el Holoceno en el entorno de la Basa de la Mora, lago de origen glaciar situado en el Macizo de Cotiella, Pirineo Central. La historia del fuego se ha reconstruido a partir de la identificación de partículas de carbón fósil a lo largo de la secuencia sedimentaria extraída del lago, que cubre los últimos 10 000 años de historia. Se ha observado que la mayor actividad del fuego se produce entre 8.1 y 4 cal Ka BP, seguida de una fase de menor actividad entre 3.2 y 1.7 cal Ka BP. Estas fluctuaciones se deben principalmente a dos razones: la cantidad de biomasa disponible y susceptible de ser quemada, y la existencia de un clima favorable para la ocurrencia de incendios. En ese sentido, se han observado correlaciones positivas de la actividad del fuego, por un lado, con Betula y Corylus como taxones ligados a la mayor producción de biomasa, y por otro, con agrupaciones de taxones adaptados a la aridez como indicadores de climas favorables a la ocurrencia de incendios. Por último, a partir de 1.7 cal Ka BP se registra en la secuencia una mayor incidencia del fuego, probablemente vinculada a la intensificación de la acción antropogénica a nivel regional.

Country
Spain
Keywords

Geography (General), Holocene, Pyrenees, ecología de la perturbación, fire history, microcarbón fósil, Pirineos, fossil micro acharcoal, G1-922, disturbance ecology, Holoceno, historia del fuego, historia del fuego, ecologia de la perturbacion, microcarbon fosil, holoceno, pirineos,

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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