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    Por favor, use este identificador para citar o enlazar este ítem:https://uvadoc.uva.es/handle/10324/59636

    Título
    The effects of native shrub, fencing, and acorn size on the emergence of contrasting co-occurring oak in Mediterranean grazed areas
    Autor
    Díaz Hernández, Roberto
    Vicente Villardón, José Luis
    Martínez Ruiz, CarolinaAutoridad UVA Orcid
    Fernández Santos, Belén
    Año del Documento
    2021
    Editorial
    MDPI
    Descripción
    Producción Científica
    Documento Fuente
    Forests, 2021, Vol. 12, Nº. 3, 307
    Zusammenfassung
    Research Highlights: The regeneration of Quercus species is usually very difficult in many oak woodlands transformed by livestock farming. Some studies have reported that shrubs can facilitate regeneration. However, the strength of interaction may vary depending on, among other factors, the shrub species and the stress tolerance of the oak species. Moreover, further studies are necessary to clarify the relative importance of the two facilitation mechanisms in the same community. Background and Objectives: Cytisus multiflorus (L’Her.) Sweet is a predominant shrub species in the Mediterranean grazed open-oak-woodlands found in the central west of the Iberian Peninsula (bioclimatic limit) and is present with Quercus pyrenaicaWilld and Quercus ilex subsp. ballota Samp trees. Thus, we assessed the effect of these native shrubs and acorn size, and the effect of excluding large herbivores, on the seedling emergence of two contrasting co-occurring Quercus species under a bioclimatic limit. Materials and Methods: A manipulative field experiment was carried out considering four treatments as a combination of shrubs (shrub/no-shrub) and fence (fenced/open) factors. A total of twenty plots, five replicates for each treatment were available. In each plot, 20 acorns were sown: 10 acorns (5 small and 5 large) for each Quercus species. Acorn emergence was recorded during the first four years following the sowing. Results: Seedling emergence took place mostly in the spring of the first year after sowing. The presence of shrub was the main significant factor and incremented the emergence of both Q. ilex and Q. pyrenaica. The effect of the fence depended on the Quercus species considered, improving only the emergence of Q. pyrenaica. A negative effect with the small acorns was detected but only for Q. pyrenaica. In all treatments, Q. ilex emerged more than Q. pyrenaica. Conclusions: C. multiflorus had a clear facilitative effect on the seedling emergence of Q. ilex and Q. pyrenaica, which was much greater than the physical effect that acorn size and excluding large herbivores had. As such, this native shrub may have a key role in oak regeneration in Mediterranean grazed areas. Furthermore, in these areas of contact between marcescent and sclerophyllous Quercus species, Q. ilex currently emerges more than Q. pyrenaica. This could be indicative of a shift towards more xeric climatic conditions, which could lead to a change in the dominant tree species in the future. However, this change could be modulated by the effects of native shrub and large herbivores.
    Materias (normalizadas)
    Arbustos
    Robles - España - Castilla y León
    Encinas - España - Castilla y León
    Árboles - España
    Arbustos - España
    Plants - Effect of stress on
    Herbivores - Ecology
    Medio ambiente - Mediterráneo, Región del
    Bosques y silvicultura
    Materias Unesco
    31 Ciencias Agrarias
    3106 Ciencia Forestal
    ISSN
    1999-4907
    Revisión por pares
    SI
    DOI
    10.3390/f12030307
    Patrocinador
    Junta de Castilla y León - (Project SA013G19)
    Universidad de Salamanca - (Programa de financiación de grupos de investigación (2014/00165/001))
    Version del Editor
    https://www.mdpi.com/1999-4907/12/3/307
    Propietario de los Derechos
    © 2021 The authors
    Idioma
    eng
    URI
    https://uvadoc.uva.es/handle/10324/59636
    Tipo de versión
    info:eu-repo/semantics/publishedVersion
    Derechos
    openAccess
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    • DEP08 - Artículos de revista [82]
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    The-Effects-of-Native-Shrub-Fencing-and-Acorn-Size.pdf
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