A Multiscale Assessment of the Risks Imposed by Plantation Forestry on Plant Biodiversity in the Hotspot Central Chile

摘要: We assessed the effects of plantations exotic trees (Pinus radiata, Eucalyptus globulus, and Populus nigra) on plant biodiversity in temperate zone hotspot Central Chile. This region has suffered from intense deforestation favor plantation establishment major part coastal area since neoliberal turn 1973. The approach presented aimed to analyze α-, β- γ-scale. Furthermore, a evaluation index was applied order provide quantitative figures management practices. Species richness is reduced by 50% below plantations. Diversity evenness values are also significantly reduced. Analyses β-similarity indicate that do not host species absent adjacent native forests, no additional habitat heterogeneity gained. On γ-scale, lower number total observed; especially endemic species. abundance considered as invasive higher frequently, plants dominate understory. attests rather poor Chile grown monocultures, natural elements lacking at specific sites insufficiently connected formations landscape scale. Results give much concern processes observed our study about begin Patagonia well. If practices adopted Patagonia, considerable decline be expected there.