| nest placement of the giant amazon river turtle, podocnemis expansa, in the araguaia river, goiás state, brazil. | the giant amazon river turtle (podocnemis expansa) nests on extensive sand bars on the margins and interior of the channel during the dry season. the high concentration of nests in specific points of certain beaches indicates that the selection of nest placement is not random but is related to some geological aspects, such as bar margin inclination and presence of a high, sandy platform. the presence of access channels to high platform points or ramp morphology are decisive factors in the choice ... | 2005 | 16042279 |