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¿Podría la disponibilidad y el valor nutritivo de los pastos de puerto de la Cordillera Cantábrica explicar su invasión por la lecherina (Euphorbia polygalifolia)?

Authors: Mora Martínez, Manuel José; Frutos, Pilar; Sarmiento, M.; Mantecón, Ángel R.; Busqué, Juan;

¿Podría la disponibilidad y el valor nutritivo de los pastos de puerto de la Cordillera Cantábrica explicar su invasión por la lecherina (Euphorbia polygalifolia)?

Abstract

Este trabajo se llevó a cabo en los puertos estivales de Sejos (Cordillera Cantábrica), que en los últimos años están sufriendo una importante invasión por la especie endémica Euphorbia polygalifolia, conocida comúnmente como lecherina. El objetivo fue estudiar la hipótesis de que la mayor incidencia de invasión de la lecherina sobre los pastos de Festuca- Agrostis sería consecuencia de su mayor utilización forrajera por el ganado, derivada posiblemente de su valor nutritivo más elevado. Para ello, se comparó la disponibilidad vegetal (disponibilidad de MS y altura media del pasto) y el valor nutritivo (composición química y digestibilidad) de pastos dominados pr Festuca nigrescens Lam. y Agrostis capillaris L. {Festuca-Agrostis) o por Nardus stricta L. (cervunales), a lo largo de la estación de pastoreo. Los resultados obtenidos no permitieron validar la hipótesis, ya que no se encontraron diferencias significativas en 1a disponibilidad de ambos tipos de pasto. En cuanto a los parámetros indicativos del valor nutritivo estudiados, solamente se observaron algunas diferencias en los contenidos minerales, que, bajo las condiciones de fuerte presión ganadera existente, no cabe esperar que puedan incidir significativamente en diferencias de selección entre comunidades.

6 páginas, 2 tablas.-- Comunicación presentada a la XLVI Reunión científica de la Sociedad Española para el Estudio de los Pastos (Vitoria, 2007).

Peer reviewed

Country
Spain
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Keywords

Pastos de Festuca-Agrostis, Cervunal, Valor nutritivo, Pastos de puerto, Euphorbia polygalifolia L

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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).
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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.
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influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
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