02443nas a2200349   4500008004100000245014700041210006900188260000800257300001200265490000800277520141700285653001701702653001401719653001501733653003001748653001401778653001701792653001601809653002201825653001601847653001401863653002801877653000901905653002101914653001601935653001401951653001801965100002801983700002302011700002402034856003502058       2005                        eng d00aChanges in food resources and conservation of scarab beetles: from sheep to dog dung in a green urban area of Rome (Coleoptera, Scarabaeoidea)0 aChanges in food resources and conservation of scarab beetles fro  cJun  a547-5560 v1233 aThe aim of the research was to show how a change in land use influences the structure of a dung beetle assemblage and affect its conservation. In the Pineto Urban Regional Park (Rome), dog dung is the sole food resource currently available for scarab dung beetles, after the recent removal of wild and domestic herbivores. A one-year sampling was conducted to study the scarab assemblage in dog scats (1999) and to compare it with the previous assemblage associated with sheep droppings (1986). Richness, evenness and similarity parameters were compared between the two allochronic assemblages. From sheep to dog dung, an impoverishment of the total richness was observed (from 19 to 9 species) together with an increase of individuals (by 7 times). Dog dung harboured 20% of the current scarab dung beetle fauna of Rome, probably as a consequence of the dog mixed diet, rich in cellulose. Both the communities showed a high percentage of tunnellers, probably because of the food shortage and, for dog scats, of the high dehydration rate. A comparison with other Roman scarab communities enhanced that: (1) the change in food resource determined a higher difference in species composition respect to other parameters (size and habitat diversity); (2) dog dung provided a temporary refuge for species that otherwise may encounter local extinction in urban environments. (c) 2005 Elsevier Ltd. All rights reserved.10a20th-century10aabundance10aassemblage10abiodiversity conservatiom10aCarabidae10acolonization10acommunities10acommunity ecology10acompetition10adiversity10adung beetle assemblages10afood10ahabitats mammals10anetherlands10aresources10aurban ecology1 aCarpaneto, Giuseppe, M.1 aMazziotta, Adriano1 aPiattella, Emanuele  u<Go to ISI>://000227958600012 02387nas a2200229   4500008004100000245011100041210006900152300001200221490000700233520159000240653001501830653003001845653001201875653002101887653001001908653002001918653001701938100002801955700002301983700001902006856013202025       2007                        eng d00aInferring species decline from collection records: roller dung beetles in Italy (Coleoptera: Scarabaeidae)0 aInferring species decline from collection records roller dung be  a903-9190 v133 aThe 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. 10aCOLEOPTERA10aConservation biogeography10adecline10aextinction index10aItaly10aland use change10aScarabaeidae1 aCarpaneto, Giuseppe, M.1 aMazziotta, Adriano1 aValerio, Laura  uhttps://scarabnet.myspecies.info/inferring-species-decline-collection-records-roller-dung-beetles-italy-coleoptera-scarabaeidae