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The decline of roller dung beetles in Italy was described using a database of both literature and unpublished data, since the late of 19th century. The probability of finding roller species was assessed for each decade of the 20th century in order to detect changes in their distribution and status. An analysis of decline was performed using a complementary approach of different extinction indexes, according to IUCN criteria.
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This page is a summary of: Inferring species decline from collection records: roller dung beetles in Italy (Coleoptera, Scarabaeidae), Diversity and Distributions, July 2007, Wiley,
DOI: 10.1111/j.1472-4642.2007.00397.x.
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