In response to continuous loss of biodiversity, recent study focused on the causes and consequences of fire on forest resources. The effects of fire on forest vegetation (composition and structure) are relatively well understood; however, little is known about the effects on insect community. We tested the short-term response (two years) of insect community to fire disturbance in Mediterranean forest ecosystem. We reported a case study in a forest area (“Il Quarto” - 600 ha) located in the “Alta Murgia” National Park, Apulia Region (southern Italy), where we established surveys transects over the entire burned area. Each transect contained six pit-fall traps to sample insect community. Using “distance from fire ignition” as explanatory variable, we developed a number of regression model and ANOVA tests to explain patterns of spatial and temporal variation in insect community. Overall we found a positive relationship between insect abundance and distance from fire ignition two years after fire. Most representative orders sampled were Lepidoptera and Coleoptera which showed a contrasting pattern in terms of abundance in relation to distance from fire ignition, i.e., Lepidoptera decreased with distance from fire while Coleoptera increased significantly. We discussed the implications of this study in terms of pre-fire and post-fire management of the forested area and concluded by addressing research needs in this emerging field.
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|Titolo:||Spatial and temporal response of insect communities to fire disturbance in Mediterranean forests|
|Data di pubblicazione:||2011|
|Appare nelle tipologie:||4.1 Contributo in Atti di convegno|