77 research outputs found
The behaviour of orientation of openings of burrows by Liolaemus lutzae (Squamata: Liolaemidae): is it influenced by environmental factors?
No full textMaia-Carneiro, T., Rocha, C.F.D. (2013): The behaviour of orientation of openings of burrows by Liolaemus lutzae (Squamata: Liolaemidae): is it influenced by environmental factors? Journal of Natural History 47 (3-4): 253-262, DOI: 10.1080/00222933.2012.743612, URL: http://dx.doi.org/10.1080/00222933.2012.74361
An unusual ecology among whiptails: the case of<i>Cnemidophorus lacertoides</i>from a restinga habitat in southern Brazil
No full textAriani, C.V., Menezes, V.A., Vrcibradic, D., Rocha, C.F.D. (2011): An unusual ecology among whiptails: the case of Cnemidophorus lacertoides from a restinga habitat in southern Brazil. Journal of Natural History 45 (41-42): 2605-2625, DOI: 10.1080/00222933.2011.597523, URL: http://dx.doi.org/10.1080/00222933.2011.59752
Figure 4 in An unusual ecology among whiptails: the case of Cnemidophorus lacertoides from a restinga habitat in southern Brazil
No full textFigure 4. Relationship between body temperature (in ◦C) of the lizard Cnemidophorus lacertoides and air temperature (F = 30.07; R2 = 0.477; p <0.001; n = 35) (top), and substrate 1,33 temperature (F = 9.06; R2 = 0.215; p <0.001; n = 35) (bottom), at the Joaquina dunes, 1,33 Florianópolis, southern Brazil.Published as part of Ariani, C.V., Menezes, V.A., Vrcibradic, D. & Rocha, C.F.D., 2011, An unusual ecology among whiptails: the case of Cnemidophorus lacertoides from a restinga habitat in southern Brazil, pp. 2605-2625 in Journal of Natural History 45 (41-42) on page 2612, DOI: 10.1080/00222933.2011.597523, http://zenodo.org/record/520467
Population dynamics of tadpoles of Crossodactylus gaudichaudii (Anura: Hylodidae) in the Atlantic Rainforest of Ilha Grande, southeastern Brazil
No full textAlmeida-Gomes, M., Laia, R.C., Hatano, F.H., Sluys, M. Van, Rocha, C.F.D. (2012): Population dynamics of tadpoles of Crossodactylus gaudichaudii (Anura: Hylodidae) in the Atlantic Rainforest of Ilha Grande, southeastern Brazil. Journal of Natural History 46 (43-44): 2725-2733, DOI: 10.1080/00222933.2012.717643, URL: http://dx.doi.org/10.1080/00222933.2012.71764
Figure 3 in An unusual ecology among whiptails: the case of Cnemidophorus lacertoides from a restinga habitat in southern Brazil
No full textFigure 3. Proportional use by Cnemidophorus lacertoides (dark bars) and estimated proportional availability (light bars) of different microhabitat categories at the Joaquina dunes, Florianópolis, southern Brazil. HV: herbaceous vegetation; OS: open sand; IB: interior of bush; LB: leaf litter at the border of bush; SB: open sand at the border of bush; BB: base of bromeliad; FA: flooded area; TG: tuft of grass; TM: termite mound.Published as part of Ariani, C.V., Menezes, V.A., Vrcibradic, D. & Rocha, C.F.D., 2011, An unusual ecology among whiptails: the case of Cnemidophorus lacertoides from a restinga habitat in southern Brazil, pp. 2605-2625 in Journal of Natural History 45 (41-42) on page 2611, DOI: 10.1080/00222933.2011.597523, http://zenodo.org/record/520467
Figure 3 in Population dynamics of tadpoles of Crossodactylus gaudichaudii (Anura: Hylodidae) in the Atlantic Rainforest of Ilha Grande, southeastern Brazil
No full textFigure 3. Density (individuals/meter of stream) of Crossodactylus gaudichaudii tadpoles sampled in three Atlantic Rainforest streams of Ilha Grande, municipality of Angra dos Reis, Rio de Janeiro, between May 2002 and April 2005 (continuous line) and rainfall values (mm) for Angra dos Reis, between May 2002 and April 2005 (dashed line).Published as part of Almeida-Gomes, M., Laia, R.C., Hatano, F.H., Sluys, M. Van & Rocha, C.F.D., 2012, Population dynamics of tadpoles of Crossodactylus gaudichaudii (Anura: Hylodidae) in the Atlantic Rainforest of Ilha Grande, southeastern Brazil, pp. 2725-2733 in Journal of Natural History 46 (43-44) on page 2730, DOI: 10.1080/00222933.2012.717643, http://zenodo.org/record/520224
Thermal biology and flight distance of<i>Tropidurus oreadicus</i>(Sauria Iguanidae) in an area of Amazonian Brazil
No full textBigger Ant Colonies Reduce Herbivory And Herbivore Residence Time On Leaves Of An Ant-plant: Azteca Muelleri Vs. Coelomera Ruficornis On Cecropia Pachystachya
No full textThe effect of defence force size in colonies of the ant Azteca muelleri on the time spent to localize, attack and expel the specialized herbivorous beetle Coelomera ruficornis from Cecropia pachystachya bushes was studied in an area of Atlantic forest in northeastern Brazil. Our results show that Azteca muelleri expel Coelomera ruficornis from Cecropia pachystachya and that the number of ants leaving a colony (defence force size) is negatively correlated with the residence time of an adult beetle on the plant. Colonies with larger defence forces recruited larger numbers of ants, resulting in faster herbivore discovery (r2=0.80; n=17; P<0.001) and reduced herbivore residence time on a leaf (r2=0.79 n=23; P<0.001) before being driven off by the ants. We also found a negative and significant relationship between herbivore damage on leaves and ant colony size (r2=0.28; n=17; P<0.05). We conclude that larger colonies have more individuals available to patrol a plant and recruit defenders toward herbivores. This reduces the time spent to locate and expel susceptible herbivores from the plant. Since the plant probably benefits from reduced herbivory and the plant provides food for the ants, the association between Azteca muelleri and Cecropia pachystachya appears mutualistic. © 1992 Springer-Verlag.91224925
3D Geological Models of Submarine Lobes from Borehole Data, Permian Tanqua-Karoo Basin, South Africa
No full textThe Permian Skoorsteenberg Formation in the Tanqua-Karoo basin in South Africa provides excellent exposure of submarine basin-floor fans. Because of this, the European Union sponsored various outcrop studies, drilling as well as the data acquisition of the research boreholes in the NOMAD project. It was a unique opportunity to study a submarine fan system by combining widely exposed outcrop and research borehole data. Because both data sets are available, this MSc. project aims to acquire bed thickness data from core and borehole image (Fullbore Formation Micro Imager) analysis and to extrapolate these data to 3D in a variety of methods based on the results of first objective. Analysis has been done on the turbidites of Fan 3 in wells NB-4, NB-3, NB-2, and NS-2. The cumulative distributions of turbidite bed thicknesses in the studied wells were found to follow a power law. Therefore, the cumulative bed thicknesses plot can be used for the following purposes: (i) to derive certain parameters for the bed geometries and distributions; (ii) to calculate turbidite volume connected to the well; (iii) to suggest accommodation space degree of confinement; and (iv) to derive qualitative information on the extent of erosion and bed amalgamation (thus, may suggest depositional setting). The change of slope (the change of exponent) in the cumulative bed thicknesses can be interpreted due to confinement or alternatively, due to the variation of the flow rheology. The clustering of data in the cumulative bed thicknesses plot may suggest the flow rheology affecting the turbidite deposition in particular time or location, which may represent a shift in the lobe depocenter. The turbidites volume connected to the wellbore can be calculated using three different methods, these are: using the mathematical model developed by Malinverno (1997) (volume is calculated from the bed thickness distribution); using the facies model developed utilizing Petrel 2010.1 software; and using the discrete convolution method (volume is calculated by relating the experimental data and the well data). The application of each method has to be done with care, taking into consideration the data availability and the limitation of each method. Moreover, information of the lobe internal geometries is needed in the volume calculation.Petroleum Engineering and GeosciencesGeoscience & EngineeringCivil Engineering and Geoscience
Reproductive phenology and flower visitors' guild of<i>Canistropsis microps</i>(Bromeliaceae) in an Atlantic Rainforest of southeastern Brazil
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