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The Soil Microbiome of the Laurel Forest in Garajonay National Park (La Gomera, Canary Islands): Comparing Unburned and Burned Habitats after a Wildfire

AuthorsVilladas, Pablo J.; Díaz-Díaz, Sara; Rodríguez-Rodríguez, Antonio; del Arco-Aguilar, Marcelino; Fernández-González, Antonio José; Pérez-Yépez, Juan; Arbelo, Carmen; González-Mancebo, Juana M.; Fernández-López, Manuel; León-Barrios, Milagros
Issue Date20-Nov-2019
PublisherMultidisciplinary Digital Publishing Institute
CitationForests 10 (12): 1051 (2019)
AbstractThe evergreen laurel forest is a relic of ancient subtropical/tropical forests, of which the best remnant in the Canary Islands is in Garajonay National Park, on La Gomera island. The soil microbiome associated with a mature undisturbed (unburned) laurel forest was characterized at two locations at different topographical positions on the mountain: The slope and the ridge crest. Given the unusual circumstance of an intense wildfire that severely affected part of this forest, the burned soils were also studied. The soil in undisturbed areas was relatively uniform. The bacterial community composition was dominated by bacteria from phyla Proteobacteria, Acidobacteria, and Actinobacteria. The wildfire changed the composition of the bacterial communities. The Acidobacteria, Actinobacteria, and Alphaproteobacteria (dominant class in unburned forests) significantly decreased in burned soils along with a parallel high increase in Betaproteobacteria, Bacteroidetes, and Firmicutes. We further showed the dramatic effect of a wildfire on the soil microbiome of the laurel forest, appearing as a loss of species richness and diversity, species dominance, and changes in the composition of the bacterial communities.
Identifiersdoi: 10.3390/f10121051
Appears in Collections:Colección MDPI
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