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    Título
    Impact of burn severity on soil properties in a Pinus pinaster ecosystem immediately after fire
    Autor
    Fernández-García, Víctor
    Marcos Porras, Elena MaríaAutoridad BuleriaORCID
    Fernández-Guisuraga, José Manuel
    Taboada Palomares, ÁngelaAutoridad BuleriaORCID
    Suárez Seoane, SusanaAutoridad Buleria
    Calvo Galván, María LeonorAutoridad BuleriaORCID
    Facultad/Centro
    Facultad de Ciencias Biologicas y Ambientales
    Área de conocimiento
    Ecologia
    Datos de la obra
    International Journal of Wildland Fire
    Editor
    CSIRO Publishin
    Fecha
    2018-12-21
    Abstract
    We analyse the effects of burn severity on individual soil properties and soil quotients in Mediterranean fire-prone pine forests immediately after a wildfire. Burn severity was measured in the field through the substrate stratum of the Composite Burn Index and soil samples were taken 7–9 days after a wildfire occurred in a Pinus pinaster Ait. ecosystem. In each soil sample, we analysed physical (size of soil aggregates), chemical (pH, organic C, total N and available P) and biological (microbial biomass C, b-glucosidase, urease and acid phosphatase activities) properties. Size of aggregates decreased in the areas affected by high burn severity. Additionally, moderate and high severities were associated with increases in pH and available P concentration and with decreases in organic C concentration. Microbial biomass C showed similar patterns to organic C along the burn severity gradient. The enzymatic activities of phosphatase and b-glucosidase showed the highest sensitivity to burn severity, as they strongly decreased from the low-severity scenarios. Among the studied soil quotients, the C : N ratio, microbial quotient and b-glucosidase : microbial biomass C quotient decreased with burn severity. This work provides valuable information on the impact of burn severity on the functioning of sandy siliceous soils in fire-prone pine ecosystems.
    Materia
    Ecología. Medio ambiente
    Palabras clave
    Biological properties
    Chemical properties
    Maritime pine
    Physical properties
    Wildfire
    Peer review
    SI
    URI
    http://hdl.handle.net/10612/9415
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