01602nas a2200169   4500008004100000245013900041210006900180260000800249300001400257490000700271520102400278653004301302100001501345700001701360700002101377856003401398       2001                        eng d00aForecasting insect species richness scores in poorly surveyed territories: the case of the Portuguese dung beetles (Col. Scarabaeinae)0 aForecasting insect species richness scores in poorly surveyed te  cAug  a1343-13670 v103 aLarge-scale biodiversity assessment of faunal distribution is needed in poorly sampled areas. In this paper, Scarabaeinae dung beetle species richness in Portugal is forecasted from a model built with a data set from areas identified as well sampled. Generalized linear models are used to relate the number of Scarabaeinae species in each Portuguese UTM 50 x 50 grid square with a set of 25 predictor variables (geographic, topographic, climatic and land cover) extracted from a geographic information system (GIS). Between-squares sampling effort unevenness, spatial autocorrelation of environmental data, non-linear relationships between variables and an assessment of the models' predictive power, the main shortcomings in geographic species richness modelling, are addressed. This methodological approach has proved to be reliable and accurate enough in estimating species richness distribution, thus providing a tool to identify areas as potential targets for conservation policies in poorly inventoried countries.10aspecies richness sampling dung beetles1 aHortal, J.1 aLobo, J., M.1 aMartin-Piera, F.  u<Go to ISI>://00017015990000802294nas a2200265   4500008004100000245011100041210006900152260001200221300001200233490000700245520153200252653002601784653001901810653001101829653001401840653001701854653001201871653001401883653002401897653001701921653001701938100001701955700002101972856003501993       1999                        eng d00aBetween-group differences in the Iberian dung beetle species-area relationship (Coleoptera : Scarabaeidae)0 aBetweengroup differences in the Iberian dung beetle speciesarea   cNov-Dec  a587-5970 v203 aBetween-group alpha- and beta-diversity differences were derived from species-area relationships fitted to field data. The accuracy of spatial richness variation predictions based on area size was also checked. The log-log model (log S = c + z log A) was found to be the best-fit linear model, with slopes (z) ranging from 0.089 to 0.142. Between-group comparisons of z (slope) and q (intercept) parameters, using the S = q + cA(Z) curvilinear regression model, corroborated early results, indicating a lower beta-diversity (slope) for Scarabaeinae than for Geotrupinae and Aphodiinae. The latter group, probably more sensitive to environmental heterogeneity, should contribute more to species richness in large areas. alpha-Diversity is greater for Aphodiinae, more relevant to local diversity (1 km(2)), than for Scarabaeinae and considerably greater for these two groups than for Geotrupinae. As earlier results show that the richness of a single dung pat is rather more a function of the Scarabaeinae species pool, richness on dung pat scales is probably due more to the between-dropping mobile Scarabaeinae, while Aphodiinae contribute mainly to local and regional pool richness. Nearly 88 % of the total richness variance is explained by area size. This percentage decreases to 37 % when the spatial structure of area size and species number are extracted. The corresponding figures for Scarabaeinae, Aphodiinae and Geotrupinae are 44, 22 and 31 %, respectively. (C) 1999 Editions scientifiques et medicales Elsevier SAS.10aAPHODIUS SCARABAEIDAE10abeta-diversity10aCURVES10adiversity10aDung beetles10aIberian10aPeninsula10arichness comparison10aScarabaeidae10aspecies-area1 aLobo, J., M.1 aMartin-Piera, F.  u<Go to ISI>://000084618100002 02786nas a2200265   4500008004100000245012600041210006900167260000800236300001200244490000700256520204200263653001102305653001002316653002002326653001702346653001602363653001602379653001702395653001202412653001302424653001102437100001702448700002102465856003402486       2002                        eng d00aSearching for a predictive model for species richness of Iberian dung beetle based on spatial and environmental variables0 aSearching for a predictive model for species richness of Iberian  cFeb  a158-1730 v163 aIn Mediterranean countries, inventories of many animal groups particularly insects, are incomplete or nonexistent. Hence, a feasible spatial picture of unequally surveyed areas is required to ascertain which faunistic surveys are good enough to produce reliable estimates of species richness. We used generalized linear models to build a multiple-regression function through which we predicted the distribution of Iberian dung beetle species richness. Given the scarcity and unevenness of the species-richness spatial distribution, the number of records of a dung beetle database (BANDASCA), falling within each of the 50 x 50 km grid squares, was chosen as a measure of the sampling effort for that square. Examining the asymptotic relationship between the number of dung-beetle species and database records for each physioclimatic Iberian subregion, we found that 82 grid squares (32% of the total) were adequately sampled. Dung-beetle species richness was related in each of these 82 cells to 24 explanatory variables. Curvilinear functions, interaction terms, and the significant third-degree polynomial terms of latitude and longitude were included to model species-richness distribution. The final model accounted for 62.4% of the total deviance after we eliminated seven outlier squares, with maximum elevation, grassland area, land-use diversity, forest area, geological diversity, interaction of terrestrial area and maximum elevation, and interaction between calcareous rock, and geological diversity and latitude being the most significant independent variables. The residuals of the function were not spatially autocorrelated, and we validated the final model by a jackknife procedure. Large and environmentally complex hotspots in the Iberian Central, Baetic, and Subbaetic mountain ranges stand out from the emerging map of species richness. Further detailed research is required to determine the complementarity of the faunas of these two main hotspots, the key question in conservation planning for a dung-feeding beetle.10aAfrica10aatlas10aautocorrelation10abiodiversity10abutterflies10acommunities10aconservation10ainsects10apatterns10aplants1 aLobo, J., M.1 aMartin-Piera, F.  u<Go to ISI>://00017372640001602216nas a2200301   4500008004100000245007900041210006900120260000900189300001000198490000700208520127200215653001401487653001601501653001401517653001401531653002601545653005001571653002401621653003801645653002601683653001801709653001401727653001501741653001601756100002101772700001701793856010401810       1996                        eng d00aA comparative discussion of trophic preferences in dung beetle communities0 acomparative discussion of trophic preferences in dung beetle com  c1996  a13-310 v193 aAvailable information on trophic preferences of dung beetles (Scarabaeoidea) in different biogeographic regions is reviewed. Trophic resource partitioning in a dung beetle (Coleoptera, Scarabaeoidea) community in the "Parque Nacional de Donana", Spain, was also studied, using nine different kinds of wild and domestic vertebrate excrement as trap bait. Undifferentiated attraction to human and herbivore faeces was noted. Human and domestic ungulate faeces was colonized by a richer fauna than that of wild herbivores, which was not the specialized trophic adaptation of any species. Although polyphagy is the most common feeding behaviour, the excrement of carnivores and other omnivores was hardly colonized. This pattern differs from that of other biogeographic regions. Negligible importance of the trophic dimension on the structure of these communities may be due to the early presence of man in the Palaearctic Region. Nevertheless, human interference alone cannot have led to an absence of true polyphagy (undifferentiated attraction to all kinds of faeces). Further research is suggested, aimed at determining whether observed resource partitioning in dung beetles communities is a consequence of human colonization or is a pre-Neolithic evolutionary event.10aAnimalia-10aArthropoda-10aBehavior-10aChordata-10aColeoptera-: Insecta-10aDigestive-System (Ingestion-and-Assimilation)10adung-beetles (Coleo10aEcology- (Environmental-Sciences)10aHominidae-: Primates-10aInvertebrata-10aMammalia-10aNutrition-10aVertebrata-1 aMartin-Piera, F.1 aLobo, J., M.  uhttps://scarabnet.myspecies.info/comparative-discussion-trophic-preferences-dung-beetle-communities