title: Post-fire salvage logging alters species composition and reduces cover, richness, and diversity in Mediterranean plant communities.
abstract: An intense debate exists on the effects of post-fire salvage logging on plant community regeneration, but scant data are available derived from experimental studies. We analyzed the effects of salvage logging on plant community regeneration in terms of species richness, diversity, cover, and composition by experimentally managing a burnt forest on a Mediterranean mountain (Sierra Nevada, S Spain). In each of three plots located at different elevations, three replicates of three treatments were implemented seven months after the fire, differing in the degree of intervention: "Non-Intervention" (all trees left standing), "Partial Cut plus Lopping" (felling 90% of the trees, cutting the main branches, and leaving all the biomass in situ), and "Salvage Logging" (felling and piling the logs, and masticating the woody debris). Plant composition in each treatment was monitored two years after the fire in linear point transects. Post-fire salvage logging was associated with reduced species richness, Shannon diversity, and total plant cover. Moreover, salvaged sites hosted different species assemblages and 25% lower cover of seeder species (but equal cover of resprouters) compared to the other treatments. Cover of trees and shrubs was also lowest in Salvage Logging, which could suggest a potential slow-down of forest regeneration. Most of these results were consistent among the three plots despite plots hosting different plant communities. Concluding, our study suggests that salvage logging may reduce species richness and diversity, as well as the recruitment of woody species, which could delay the natural regeneration of the ecosystem.
authors.affiliation: Departamento de Ecología, Facultad de Ciencias, Universidad de Granada, E-18071 Granada, Spain. Electronic address: leverkus@ugr.es.
authors.forename: Alexandro B
authors.initials: AB
authors.lastname: Leverkus
authors.affiliation: Departamento de Botánica, Facultad de Ciencias, Universidad de Granada, E-18071 Granada, Spain.
authors.forename: Juan
authors.initials: J
authors.lastname: Lorite
authors.affiliation: Grupo de Sistemas y Recursos Forestales, Área de Producción Ecológica y Recursos Naturales, IFAPA Centro Camino de Purchil, Camino de Purchil s/n, E-18004 Granada, Spain.
authors.forename: Francisco B
authors.initials: FB
authors.lastname: Navarro
authors.affiliation: Departamento de Desertificación y Geo-ecología, Estación Experimental de Zonas Áridas-CSIC, E-04120 Almería, Spain; Centro Andaluz de Medio Ambiente (CEAMA), E-18006 Granada, Spain.
authors.forename: Enrique P
authors.initials: EP
authors.lastname: Sánchez-Cañete
authors.affiliation: Departamento de Ecología, Facultad de Ciencias, Universidad de Granada, E-18071 Granada, Spain.
authors.forename: Jorge
authors.initials: J
authors.lastname: Castro
mesh_terms: D044822:Biodiversity; D005390:Fires; D008522:Mediterranean Sea; D010944:Plants / Q000737:chemistry* / Q000145:classification
keywords: Biological legacies; Clear-cutting; Post-fire burnt-wood management; Post-fire restoration; Salvage harvesting; Sierra Nevada National Park