Adult demography of an isolated population of the threatened butterfly Scarce Heath Coenonympha hero and its conservation implications

Scarce Heath Coenonympha hero is considered to be one of the most seriously threatened European butterflies, especially declining in western and central Europe. It usually occurs in small, discrete colonies forming metapopulation systems, but the exchange of individuals between habitat patches is considered limited. Therefore the persistence of the species in fragmented systems is likely to depend largely on the demography of local populations....