RT info:eu-repo/semantics/article
T1 Wildfire effects on diversity and composition in soil bacterial communities
A1 Sáenz de Miera Carnicer, Luis Enrique
A1 Pinto Prieto, Rayo
A1 Gutiérrez González, Juan J.
A1 Calvo Galván, María Leonor
A1 Ansola González, Gemma
A2 Genetica
K1 Ecología. Medio ambiente
K1 Wildfire severity
K1 Soil bacterial community composition
K1 Diversity
AB 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.
PB Elsevier
SN 0048-9697
LK http://hdl.handle.net/10612/12163
UL http://hdl.handle.net/10612/12163
NO P. 1-10
DS BULERIA. Repositorio Institucional de la Universidad de León
RD 25-abr-2024