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    Título
    Wildfire effects on diversity and composition in soil bacterial communities
    Autor
    Sáenz De Miera Carnicer, Luis Enrique
    Pinto, Rayo
    Gutiérrez González, Juan J.
    Calvo Galván, María LeonorAutoridad BuleriaORCID
    Ansola González, GemmaAutoridad BuleriaORCID
    Facultad/Centro
    Facultad de Ciencias Biologicas y Ambientales
    Área de conocimiento
    Genetica
    Título de la revista
    Science of The Total Environment
    Número de la revista
    138636
    Editor
    Elsevier
    Fecha
    2020-07-15
    ISSN
    0048-9697
    Abstract
    In recent years, the Mediterranean area has witnessed an increase of both the frequency and severity of large fires, which appears to be intimately associated with climate and land use changes. To measure the impact of wildfires on living organisms, diverse indicators have been proposed. These indicators of fire severity traditionally rely on quantifying the damage caused to the vegetal component of ecosystems. However, the use of bacterial communities as severity indicators has received less attention. Here, we studied the differences between bacterial communities of three different Mediterranean ecosystems, two shrubby and one arboreal, two months after a large wildfire. Two levels of severity were compared to a control unburnt soil. The results showed that greater fire severity triggers a reduction in the diversity of soil bacterial communities. In high-severity fires, this reduction reached 40.6 and 58.6% of the control values for richness and Shannon's diversity, respectively. We also found that the greatest differences between communities could be attributed first to the severity of the fire, and second to the ecosystem from which they originated. Importantly, species of just five families of bacteria: Oxalobacteraceae, Micrococcaceae, Paenibacillaceae, Bacillaceae and Planococcaceae, became dominant in all three ecosystems. The average frequency increase for particular species was 100 times. However, due to random uncontrolled factors, the species that became dominant in each community were not always the same.
    Materia
    Ecología. Medio ambiente
    Palabras clave
    Wildfire severity
    Soil bacterial community composition
    Diversity
    Peer review
    SI
    URI
    http://hdl.handle.net/10612/12163
    DOI
    https://doi.org/10.1016/j.scitotenv.2020.138636
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