Unraveling the relative importance of factors driving post-fire regeneration trajectories in non-serotinous Pinus nigra forests

摘要: Abstract In the Mediterranean, non-serotinous pinewoods are suffering an increasing occurrence of high-severity crown fires that usually drive vegetation shifts to fire-adapted communities and a decrease in pine-dominated area. Here we used case-study approach on large area dominated by Pinus nigra Arn. ssp. salzmannii burned 1998 gain further understanding relative importance different factors related local topography (elevation, aspect, slope, curvature), pre-fire (land-use history, canopy cover) fire behavior (burn severity, presence unburned patches) as drivers post-fire regeneration dynamics. The results find pine shows locally resilient responses driven mainly effects (presence characteristics (i.e. stable forest areas). When fire-induced changes from dominance other types occurred, landscape 15 years was woody vegetation, with some rare grassland emerging under very specific conditions (mountain ridges, hilltops rocky sites). Conversion shrubland occurred most xeric sites (south-facing areas, cases steep slopes) areas young stands prior fire. We found manageable such structure composition strongly determine trajectories tree species regeneration. This knowledge can be define preventive management strategies oriented direct dynamics anticipation occurrence. At level, managing fuels favor patches modify their spatial distribution along will more response. stand adjusting silvicultural interventions natural establishment late-successional oak