Effects of forest continuity on flying saproxylic beetle assemblages in small woodlots embedded in agricultural landscapes

摘要: Ancient forests are of considerable interest for strategies biodiversity conservation. However, in European forest landscapes fragmented and harvested a long time continuity might be no longer key driver flying organisms such as saproxylic beetles. In study based on paired samples (n = 60 stands, p 180 traps) ancient recent forests, we investigated the effects beetle assemblages two French regions. Mean species richness was significantly related with deadwood volume but not forests. This loss relationship between their environment suggests that dispersal limitation is at work, least some species. Forest had significant effect mean number common species, rare assemblage composition one out four cases tested. both regions, identified associated either or Finally, body size smaller compared ones, tree diameter preference, despite higher large These results lend support to using criterion identify sites conservation importance, even highly landscapes.