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Can Shrub Flammability be Affected by Goat Grazing? Flammability Parameters of Mediterranean Shrub Species under Grazing

Author

Listed:
  • Juan Manuel Mancilla-Leytón

    (Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, 41012 Sevilla, Spain)

  • Carmen Hernando

    (INIA, Forest Research Centre, Department of Forest Dynamics and Management, Forest Fire Laboratory, Ctra. Coruña Km 7,5, 28040 Madrid, Spain
    iuFOR, University Institute for Sustainable Forest Management, UVA-INIA, 28040 Madrid, Spain)

  • Jesús Cambrollé

    (Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, 41012 Sevilla, Spain)

  • Sara Muñoz-Vallés

    (Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, 41012 Sevilla, Spain)

  • Rafael Pino-Mejías

    (Departamento de Estadística e Investigación Operativa, Universidad de Sevilla, 41013 Sevilla, Spain)

  • Ángel Martín Vicente

    (Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, 41012 Sevilla, Spain)

Abstract

In this study, we evaluated changes in the potential flammability of different Mediterranean shrub species in a pine ( Pinus pinea ) forest in the Doñana Natural Park (of SW Spain) as a result of goat grazing. Plant height, total biomass, fine fuel biomass and leaves/wood ratio were measured in individual plants of each species in both grazed and ungrazed areas. Moisture content, mean time of ignition, mean time of combustion, gross heat of combustion (GHC) and flammability class of the studied shrub species were determined in the laboratory. The results of this experiment showed that grazing influenced the flammability characteristics of the studied shrub species. However, the strength of this effect was insufficient to modify the flammability index of these plants, except in the case of Myrtus communis , in which grazed plants presented a lower flammability index. According to Valette’s classification, Cistus salviifolius , Halimium halimifolium and Pistacea lentiscus are flammable species, Rosmarinus officinalis is a flammable-highly flammable species, and M. communis is non-flammable. The GHC values obtained were generally “intermediate”, except for those of R. officinalis , which were classified as “high”. The flammability parameters of the study species did not show a very marked trend in relation to grazing, but the vertical structure of plants did change by presenting reduced biomass of leaves and fine twigs. This change altered the physical characteristics of these plants and possibly acted to reduce the inherent fire risk of the shrublands.

Suggested Citation

  • Juan Manuel Mancilla-Leytón & Carmen Hernando & Jesús Cambrollé & Sara Muñoz-Vallés & Rafael Pino-Mejías & Ángel Martín Vicente, 2021. "Can Shrub Flammability be Affected by Goat Grazing? Flammability Parameters of Mediterranean Shrub Species under Grazing," Sustainability, MDPI, vol. 13(3), pages 1-13, February.
    • Handle: RePEc:gam:jsusta:v:13:y:2021:i:3:p:1555-:d:491532
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    References listed on IDEAS

    as
    1. Eduardo Morales-Jerrett & Juan Manuel Mancilla-Leytón & Manuel Delgado-Pertíñez & Yolanda Mena, 2020. "The Contribution of Traditional Meat Goat Farming Systems to Human Wellbeing and Its Importance for the Sustainability of This Livestock Subsector," Sustainability, MDPI, vol. 12(3), pages 1-23, February.
    2. Javier Pareja & Elena Baraza & Miguel Ibáñez & Oriol Domenech & Jordi Bartolomé, 2020. "The Role of Feral Goats in Maintaining Firebreaks by Using Attractants," Sustainability, MDPI, vol. 12(17), pages 1-14, September.
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    Cited by:

    1. Juan Manuel Mancilla-Leytón & Rocío Fernández-Alés & Ángel Martín Vicente, 2021. "Effects of Diet Selection by Goats Grazing on the Vegetation of a Protected Pine Forest in Doñana Natural Park (SW Spain)," Sustainability, MDPI, vol. 13(7), pages 1-10, April.
    2. Manuel Bertomeu & Javier Pineda & Fernando Pulido, 2022. "Managing Wildfire Risk in Mosaic Landscapes: A Case Study of the Upper Gata River Catchment in Sierra de Gata, Spain," Land, MDPI, vol. 11(4), pages 1-26, March.

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