In the first paper of this issue, Buse et al. (2013) reconstructed the immigration of the
oak-inhabiting jewel beetleCoraebus florentinusfrom Mediterranean forest ecosystems to
Germany since the 1950s. Using three independent modelling approaches they analysed
abiotic factors which determine the current spatial distribution of the beetle in southwest
Germany. The authors link the range extension to the main factors of ‘‘mean maximum
temperature’’ and ‘‘mean precipitation’’ in summer, which have both been altered by
climate change during recent decades. The warmer and dryer conditions in southwest
Germany favoured the reproduction and enabled the migration success ofCoraebus florentinus. Considering current projections of climate change, the jewel beetle is expected to
extend its range further north into Central Europe in the future and might particularly affect
young oak stands on sandy and dry sites. This calls for an adaptation of forest management
for the conservation of species-rich oak stands and a revision of the conservation status and
categorization of the beetle as a critically endangered species in Germany.