@article {1431,
	title = {Inferring species decline from collection records: roller dung beetles in Italy (Coleoptera: Scarabaeidae)},
	journal = {Diversity and Distributions},
	volume = {13},
	year = {2007},
	pages = {903-919},
	abstract = {The decline of roller dung beetles (Coleoptera, Scarabaeidae) in Italy, at national and regional level, was described using a database of both literature and unpublished data, since the late of 19th century.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 dis- tribution and status. An analysis of decline was performed using a complementary approach of different extinction indexes, according to IUCN criteria. During the 20th century, both the absolute number of records and the UTM cells where roller beetles were found increased clearly as a consequence of the escalation of entomo- logical surveys. Nevertheless, comparing R species (rollers) with all the scarab dung beetles from the first to the last quarter of the 20th century, the relative frequency of roller records decreased by 31\%, while the relative number of occupied UTM cells dropped by 23\%. Six roller species showed a significant decline in Italy from the first to the second part of the 20th century, and nine in the last 30years. Other two species disappeared from the majority of the northern regions. Finally, the values of all the extinction indexes were strongly correlated and detected a high risk of extinction in Italy for six species. A gradual change in land use during the last three decades, consisting of a reduced extension of grasslands in favour of either intensive agriculture or reforestation after abandonment of livestock raising, was likely the main factor inducing decline and local extinction of roller species. },
	keywords = {COLEOPTERA, Conservation biogeography, decline, extinction index, Italy, land use change, Scarabaeidae},
	author = {Carpaneto, Giuseppe M. and Mazziotta, Adriano and Valerio, Laura}
}
@article {1465,
	title = {The effects of rainforest canopy loss on arboreal dung beetles in Borneo: implications for the measurement of biodiversity in derived tropical ecosystems},
	journal = {Diversity and Distributions},
	volume = {4},
	year = {1998},
	note = {have a copy},
	pages = {167-173},
	keywords = {canopy (biological conservation 2007), logging, modification, Scarabaeidae, species richness},
	author = {Davis, Andrew and Sutton, Stephen}
}
@article {1930,
	title = {Regional and local influence of grazing activity on the diversity of a semi-arid dung beetle community},
	journal = {Diversity and Distributions},
	volume = {12},
	year = {2006},
	pages = {111-123},
	abstract = {This study analyses the effect of resource availability (i.e. sheep dung) on dung beetle communities in an arid region of Central Spain, both at regional and at local scales. A total of 18 sites within 600 km2 were sampled for the regional analysis and 16 sites within the 30 km2 of an Iberian municipality were sampled for the local ana- lysis. Spatial and environmental characteristics of sampling sites were also compiled at both scales, including measures of grazing activity (livestock density at regional scale, and two counts of rabbit and sheep dung at local scale). At a regional scale, any environmental or spatial variable can help to explain the variation in abundance. However, species richness was related to summer precipitation and composition was related to elevation. At local scale, abundance is not significantly related to any of the environmental variables, but species richness was related to the local amount of sheep dung (27\% of variance). The amount of dung in a 2-km buffer around the site accounts for 27{\textendash}32\% of variance in abundance and 60{\textendash}65\% of variance in species richness. The presence of the flock with the highest sheep density explains 53\% of abundance variability and 73\% of species richness variance. A cluster analysis of localities identified two main groups, one characterized by a lower abundance and species richness that can be considered a nested subsample of the species-rich group. The mean and maximum amount of sheep dung in the sites separated by less than 2 km are the only significant explanatory variables able to discriminate both groups. These results suggest that grazing intensity (and the associated increase in the amount of trophic resources) is a key factor in determining local variation in the diversity and composition of dung beetle assemblages. However, dung beetle assem- blages are not spatially independent at the analysed resolution, and the amount of dung in the surroundings seems to be more important for locally collected species than the dung effectively found in the site. Although differences in the availability and quantity of trophic resources among nearby sites could be affecting the popula- tion dynamics and dispersion of dung beetles within a locality, sites with larger popu- lations, and greater species numbers would not be able to exercise enough influence as to bring about a complete local faunistic homogenization.},
	keywords = {Resource availability, Scarabaeidae, semi-arid ecosystems, sheep grazing activity, species richness determinants},
	author = {Lobo, Jorge M. and Hortal, Joaquin and Cabrero-Sanudo, Francisco-Jose}
}
