Abstract
A butterfly species inventory of the Bifeng Valley within the Baishuijiang Natural Reserve in Gansu Province in China was conducted and several aspects of biodiversity were analyzed in a biogeographical context. One hundred and eighty-four species have been encountered belonging to 12 families and 99 genera. According to the total area of the Bifeng Valley of 30 km², an estimated density of six butterfly species per km² can be regarded as particularly high. A transect study in Bifeng Valley, aimed to quantify anthropogenic impact and the influence of remaining natural habitat on the occurrence of butterfly species and individuals. With higher levels of human disturbance and corresponding decreasing amount of natural habitat species numbers and overall butterfly abundance decreased. First suggestions on the inclusion of the rarest species in the area into certain conservation categories are provided. This is intended as a starting point to highlight conservation necessities and deficiencies in areas which are easily ignored as these are only rarely highlighted in an national and even more so in an international context.
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