02439nas a2200157   4500008004100000245017200041210006900213260000800282300001400290490000700304520185400311653004402165100002102209700001702230856003402247       2004                        eng d00aA comparison of Passalidae (Coleoptera, Lamellicornia) diversity and community structure between primary and secondary tropical forest in Los Tuxtlas, Veracruz, Mexico0 acomparison of Passalidae Coleoptera Lamellicornia diversity and   cJun  a1257-12690 v133 aComparison of the diversity and community structure of Coleoptera (Passalidae) collected in Los Tuxtlas, Veracruz, Mexico, in primary and secondary tropical forest has been carried out. The saproxylophagous beetles studied can be differentiated according to their presence in three distinct microhabitats of rotting logs: underbark, sapwood - heartwood and microhabitat generalists. Over the 2-year study period, 12 passalid species were recorded (six Passalini and six Proculini) represented by a total of 2971 individuals, collected from 234 rotting logs. The rarefaction method, the lognormal species - abundance relationship, and the nonparametric jackknife method were used to compare species richness between the habitats. The data were also fitted to log series, truncated lognormal, geometric, and broken-stick species abundance models to detect changes in community structure. The community composition of Passalidae in Los Tuxtlas did not differ ostensibly between the primary and secondary forests. Neither the mean number of individuals nor the biomass per log differed significantly. Furthermore, there were no significant differences between the two habitats in terms of the number of underbark, sapwood/heartwood, and microhabitat generalist species. Different richness estimators indicated that the primary forest community is only slightly richer. The slight decrease in richness of the secondary forest is related to a decrease in dominance by certain species, as well as to a more balanced abundance distribution, which is adequately described by the broken-stick model. Complementary explanations for this pattern may be: ( 1) that logging reduces the abundance of dominant species, thus preventing competitive exclusion in the secondary forest; and ( 2) that passalid diversity is not regulated by the diversity of tree species.10aforest change biodiversity dung beetles1 aCastillo, M., L.1 aLobo, J., M.  u<Go to ISI>://00022021350000201602nas 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>://00017015990000801021nas a2200169   4500008004100000245009000041210006900131260000800200300001200208490000700220520051700227653001700744100001900761700001700780700002000797856003400817       1999                        eng d00aDoes the populating of Corsica by dung beetles result from interspecific competition?0 aDoes the populating of Corsica by dung beetles result from inter  cDec  a290-2980 v353 aThe dung beetles include Scarabaeidae, Aphodiinae and Geotrupinae (Coleoptera: Scarabaeoidea). These beetles constitute very well structured communities, under the control of a strong competition. Using the French dung beetle database, the faunas of Corsica and of the southern continental France were compared. The Corsican fauna is poorer than the continental one, with a low endemism rate, limited to the apterous species. Moreover, most of the species found in Corsica are generalist and/or very competitive.10aDung beetles1 aJay-Robert, P.1 aLobo, J., M.1 aLumaret, J., P.  u<Go to ISI>://00008589250005400750nas a2200181   4500008004100000245018800041210007200229300001200301490000700313653001600320653000900336653001900345653001400364100001500378700001700393700002000410856013800430       1997                        eng d00aConséquences de l’interaction entre préférences pour l’habitat et quantite´ de ressources trophiques sur les communaute´s d’insectes coprophages (Coleoptera: Scarabaeoidea)0 aConséquences de l interaction entre préférences pour l habitat e  a107-1190 v1810adung beetle10afood10amammal mammals10aresources1 aKadiri, N.1 aLobo, J., M.1 aLumaret, J., P.  uhttps://scarabnet.myspecies.info/cons-quences-de-l-interaction-entre-pr-f-rences-pour-l-habitat-et-quantite-de-ressources-trophiques-00350nas a2200109   4500008004100000245006600041210006300107300001200170490000700182100001700189856003400206       1993                        eng d00aEstimation of Dung Beetle Biomass (Coleoptera, Scarabaeoidea)0 aEstimation of Dung Beetle Biomass Coleoptera Scarabaeoidea  a235-2380 v901 aLobo, J., M.  u<Go to ISI>://A1993LL7750001201541nas a2200133   4500008004100000245010500041210006900146300001000215490000700225520110700232653001701339100001701356856003401373       1993                        eng d00aThe Relationship between Distribution and Abundance in a Dung- Beetle Community (Col, Scarabaeoidea)0 aRelationship between Distribution and Abundance in a Dung Beetle  a43-550 v143 aThe relationship between species' local abundance and distribution over a range of spatial scales was analysed in the case of a community of Iberian dung beetles. On a local scale, abundance and distribution are correlated, as statistics would lead one to expect (the larger the population of a species, the more frequently they occur in dung pats and samples). Nevertheless, this correlation is not observed in the data derived from annual sampling, due to presence of species characterized by high population growth rates and narrow seasonal occurrences. The supposition (BROWN, 1984) that broad- niche species should also be locally abundant is not corroborated; species were found that were well-distributed locally, but without large local populations. On a regional scale, the results are in agreement with the model proposed by BROWN & MAURER (1987); locally abundant species tend to be well-distributed, although there is considerable variation in this correlation. On a geographical scale the results are as would be expected, although there are exceptions, possibly due to historical factors.10aDung beetles1 aLobo, J., M.  u<Go to ISI>://A1993LQ9130000501693nas a2200289   4500008004100000245016500041210006900206300001200275490000600287520065600293653001400949653001300963653001600976653001600992653003901008653002601047653003001073653003801103653001301141653001801154653001901172653002701191653001401218653001601232100001701248856013801265       1996                        eng d00aDiversity, biogeographical considerations and spatial structure of a recently invaded dung beetle (Coleoptera: Scarabaeoidea) community in the Chihuahuan desert0 aDiversity biogeographical considerations and spatial structure o  a342-3520 v53 aAnalysis of the faunal composition and diversity of Mapimi dung beetle communities indicates that, while much poorer than those near the edges of the Chihuahuan desert, they may possibly have been even more so in the recent past, since at least four of the six captured species were introduced recently into North America. While their overall diversity and composition appear explicable in terms of historic and topographic factors, the regional variation in these communities between sample sites is argued to be a function of the interplay of the environmental requirements of the species and the quantity and quality of trophic resources available.10aAnimalia-10aAnimals-10aArthropoda-10aArthropods-10aBiogeography- (Population-Studies)10aColeoptera-: Insecta-10adung-beetle (Coleoptera-)10aEcology- (Environmental-Sciences)10aInsects-10aInvertebrata-10aInvertebrates-10aMexico- (North-America10aNearctic-10aPhysiology-1 aLobo, J., M.  uhttps://scarabnet.myspecies.info/diversity-biogeographical-considerations-and-spatial-structure-recently-invaded-dung-beetle-coleopte01193nas a2200157   4500008004100000245013000041210006900171260000800240300001200248490000700260520068100267653001700948100001700965700001900982856003401001       1999                        eng d00aDifferent ways of constructing octaves and their consequences on the prevalence of the bimodal species abundance distribution0 aDifferent ways of constructing octaves and their consequences on  cNov  a321-3260 v873 aSeveral studies on dung beetle communities suggest that their species abundance distribution is bimodal. This bimodality has been explained as a consequence of the mixture of local and non-local species in the communities. In this paper we demonstrate that bimodal distribution in dung beetles is a consequence of the method of octave construction, which increases the number of species present in the first octave. Although we do not rule out the existence of bimodality in species abundance distributions, we suggest that this should be confirmed by large sampling programs done at local and regional levels, and by the correct application of the octave construction method.10aDung beetles1 aLobo, J., M.1 aFavila, M., E.  u<Go to ISI>://00008404840001201708nas a2200157   4500008004100000245018000041210006900221260000800290300001200298490000700310520114900317653001701466100001701483700001601500856003401516       2000                        eng d00aBiogeographical and ecological factors affecting the altitudinal variation of mountainous communities of coprophagous beetles (Coleoptera : Scarabaeoidea): a comparative study0 aBiogeographical and ecological factors affecting the altitudinal  cJan  a115-1260 v933 aThe altitudinal variation in the richness and composition of communities of co-prophagous beetles in a mountainous landscape in Mexico is analyzed and the results obtained are compared with those of similar studies carried out in other parts of the world. Two nonexclusive processes are proposed as responsible for the assemblage of mountain fauna: horizontal colonization by elements originating from lineages distributed at higher latitudes and vertical colonization by lineages distributed at the same latitude but at different altitudes. The current analysis supports the hypothesis that when the horizontal colonization dominates, mountain faunas show a clear altitudinal substitution between large taxa with different evolutionary histories (e.g., Scarabaeinae and Aphodiinae) and the gradient of reduction in species richness is attenuated. This occurs in mountains of different continents and depends primarily on the degree of isolation and general orientation of thr mountain ranges. Conversely, when vertical colonization dominates, mountain faunas show only slight altitudinal substitution, and the reduction in richness is greater.10aDung beetles1 aLobo, J., M.1 aHalffter, G  u<Go to ISI>://00008963160001602712nas a2200169   4500008004100000245010600041210006900147260000800216300001200224490000700236520219200243653001702435100001702452700002002469700001902489856003402508       1998                        eng d00aSampling dung beetles in the French Mediterranean area: Effects of abiotic factors and farm practices0 aSampling dung beetles in the French Mediterranean area Effects o  cJul  a252-2660 v423 a1. The confidence limits and the validity of the results obtained by using dung-baited traps were examined in five sites in southern France, which were very close together and similar for most environmental variables but differed in their pastoral history. Site 1 was a virgin site which had been grazed for only a few months by cattle; site 2 had been grazed for 10 years by cattle but the cattle herd had been removed in the previous year; the other three sites had been grazed by sheep, more or less extensively, for many years. 2. Beetle abundance, biomass or richness were not correlated with temperature and precipitation, but were significantly correlated with radiant energy. The energy necessary for flight activity was probably related to the radiant energy level at the soil surface. This allowed identification of the most favourable periods for sampling. 3. At the sites with at present limited resources, the mean biomass of trapped beetles decreased rapidly when repetitive trappings were carried out over several days. An intense trapping during a continuous period led to an underestimate of the number of beetles, due to site impoverishment. When the cattle herd was removed and dung was therefore not available, the trappings made a few months later overestimated the number of beetles. In contrast, after the establishment of a new large cattle herd in a virgin site, formerly free of grazing, the baited traps underestimated the number of beetles, due to the amount of dung present in the vicinity of the traps. 4. One trapping session and five traps collected 75-80% of total local species but 95% of the abundance and biomass of the community. So, for most of the ecological studies, one trapping session and a few baited traps (five in the Mediterranean area where dung beetle communities are very diverse when compared with more temperate areas) are sufficient to give a sample representing the structure of the dung beetle communities. Conversely, an exhaustive inventory for biogeographical studies need more baited traps. At least 15 traps are necessary to collect 95% of species present at a site. An abacus allows an estimate of the quality of the sampling.10aDung beetles1 aLobo, J., M.1 aLumaret, J., P.1 aJay-Robert, P.  u<Go to ISI>://00007489660000703191nas a2200349   4500008004100000245018200041210006900223260000800292300001200300490000700312520212700319653000902446653001702455653002502472653001702497653001402514653001702528653002902545653001102574653002802585653002102613653001302634653001002647653002102657653003402678653002602712653001302738100001702751700002002768700001902788856003402807       2002                        eng d00aModelling the species richness distribution of French dung beetles (Coleoptera, Scarabaeidae) and delimiting the predictive capacity of different groups of explanatory variables0 aModelling the species richness distribution of French dung beetl  cJul  a265-2770 v113 aAim To predict French Scarabaeidae dung beetle species richness distribution, and to determine the possible underlying causal factors. Location The entire French territory has been studied by dividing it into 301 grid cells of 0.72 x 0.36 degrees. Method Species richness distribution was predicted using generalized linear models to relate the number of species with spatial, topographic and climate variables in grid squares previously identified as well sampled (n = 66). The predictive function includes the curvilinear relationship between variables, interaction terms and the significant third-degree polynomial terms of latitude and longitude. The final model was validated by a jack-knife procedure. The underlying causal factors were investigated by partial regression analysis, decomposing the variation in species richness among spatial, topographic and climate type variables. Results The final model accounts for 86.2% of total deviance, with a mean jack-knife predictive error of 17.7%. The species richness map obtained highlights the Mediterranean as the region richest in species, and the less well-explored south-western region as also being species-rich. The largest fraction of variability (38%) in the number of species is accounted for by the combined effect of the three groups of explanatory variables. The spatially structured climate component explains 21% of variation, while the pure climate and pure spatial components explain 14% and 11%, respectively. The effect of topography was negligible. Conclusions Delimiting the adequately inventoried areas and elaborating forecasting models using simple environmental variables can rapidly produce an estimate of the species richness distribution. Scarabaeidae species richness distribution seems to be mainly influenced by temperature. Minimum mean temperature is the most influential variable on a local scale, while maximum and mean temperature are the most important spatially structured variables. We suggest that species richness variation is mainly conditioned by the failure of many species to go beyond determined temperature range limits.10aauto10abiodiversity10aconservation biology10adeterminants10adiversity10aDung beetles10aenvironmental components10aFrance10amodelling distributions10anorthern finland10apatterns10ascale10aspecies richness10aspecies richness distribution10avariance partitioning10awildlife1 aLobo, J., M.1 aLumaret, J., P.1 aJay-Robert, P.  u<Go to ISI>://00017664810000102294nas 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