INSTITUTO DE DIVERSIDAD Y ECOLOGIA ANIMAL
Unidad Ejecutora - UE
How far away from water? Terrestrial dispersal and nesting sites of the freshwater turtle Phrynops hilarii in the floodplain of the Paraná River (Argentina)
LOPEZ MARÍA SOLEDAD; SIONES WALTER; GERARDO C. LEYNAUD; PRIETO YANINA; MANZANO ADRIANA
ZOOLOGICAL SOC JAPAN
Año: 2013 vol. 30 p. 1063 - 1063
Terrestrial environments surrounding aquatic Resources are Important and intensively used by semi-aquatic species. In the present work terrestrial dispersal and nesting sites of the freshwater turtle Phrynops hilarii were analyzed in the floodplain of the Paraná River, using field data and variables obtained from remote sensing. A total of 112 turtles and nests were recorded during road sampling (786 km) for one year. Individuals were at a mean distance of 171.45 m from water, with a negative correlation between number of turtles and distance from water bodies. No significant differences in distance of turtles from water were observed among seasons. Phrynops hilarii nested at a mean distance of 136.51 m from water, showing a Negative correlation between number of nests and distance from water bodies. mean elevation of nests relative to maximum level of water body nearest each Record was 1.13 m. The correlation between number of nests and elevation of The nearest water body was positive and significant. The landscape surrounding wetlands is essential for P. hilarii to complete the life cycle and the habitat selected was proportionally different from that available, with a higher proportion of wetlands, grasslands and forests.