Syntopic species often exhibit evolutionary mechanisms that reduce competition. © 2017 Deutsche Gesellschaft für Herpetologie und Terrarienkunde e.V. Our results provide basic information that could assist in the adoption of adequate management practices for protection or restoration of habitat attributes relevant to these vulnerable (D.
Generally, the studied lizards were more abundant at sites with greater percentage of leaf litter and lower percentages of bare ground and small rocks, despite the lower frequency of available refuges in these places. There were significant differences in relative abundance between the sampling sites. montenegrina was found in more open, rocky situations. Dinarolacerta mosorensis was associated with relatively more shaded and damper spots on rocks closer to vegetation and leaf litter, while D. We found significant differences in structural features of the microhabitat used both between populations of D. We analysed their habitat characteristics and relative abundances in the mountains of Montenegro.
montenegrina are allopatric and closely related rock lizards endemic to the Dinaric Mountains of the Balkan Peninsula. Our novel approach allowed splitting of the effect of different mechanisms in the microhabitat selection of lizards, which makes it a powerful tool for assessing the conformation of the interactions between different environmental variables mediating animal behaviour.ĭinarolacerta mosorensis and D.
SPELLBREAK SYSTEM REQUIREMENTS DRIVERS
Moreover, the mixed-SRSF revealed that direct solar radiation and the non-thermal properties of the substrates were the only drivers of microhabitat selection for both species, with approximately the same strength. Results confirmed that substrate temperature was mediated by: air convection > solar radiation > physical thermal properties of the substrates. Then we assessed the effects of solar radiation, convection, conduction and the non-thermal properties of the substrate in the probability of use of a certain microhabi-tat. First, we controlled for the effects of solar radiation, convection and the physical thermal properties of the substrate on substrate temperature.
To this end, a mixed structural resource selection function (mixed-SRSF) approach was used, modelling the probability of finding a lizard on a certain microhabitat based on environmental variables of used and simultaneously available places. ocellifera (N = 43) and the tropidurid Tropidurus oreadicus (N = 23). Our aim was to disentangle the effects of different heat sources and the non-thermal properties of the substrate in the microhabitat choices of two lizard species living in savanna habitats of central-western Brazil: the teiid Ameivula aff. These retreat site preferences are likely driven both by the necessities of thermoregulation and protection from predators. We also found that, compared to other available cover element-substrate combinations, rocks lying on a bedrock substrate afford the best opportunities for skinks to achieve preferred body temperatures. fasciatus prefer longer than average cover rocks located in areas with few trees. A matched-pairs logistic regression revealed that individuals of E. To determine preferences we compared dimensions, thermal properties, and other associated microhabitat characteristics of rocks under which skinks were found to randomly selected rocks in two populations.
In this study, we examined the early-season diurnal retreat site selection preferences of the Five-Lined Skink at the northern limit of its range. The Five-Lined Skink (Eumeces fasciatus) is a rock-dwelling diurnal lizard that, in Canada, is considered a species of "special concern" under the recently passed Species at Risk Act (SARA). Identifying microhabitat preferences is important in understanding distributions of organisms and crucial to focusing conservation efforts.
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