Ferreira Paulo Dias Júnior, Castro Paulo de Tarso Amorim
Centro Universitário do Leste de Minas Gerais.
Ambio. 2005 May;34(3):212-7. doi: 10.1639/0044-7447(2005)034[0212:npotga]2.0.co;2.
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 of nesting areas. The eroded and escarped margins of the beaches hinder the Amazon river turtle arriving at the most suitable places for nesting. Through the years, changes in beach morphology can alter nest distribution.
巨型亚马逊河龟（Podocnemis expansa）在旱季会在河道边缘和内部广阔的沙洲上筑巢。某些海滩特定地点的巢穴高度集中表明，巢穴位置的选择并非随机，而是与一些地质因素有关，例如沙洲边缘的倾斜度以及是否存在高大的沙地平台。通往高地平台点的通道或斜坡形态的存在是选择筑巢区域的决定性因素。海滩被侵蚀且陡峭的边缘阻碍了亚马逊河龟到达最适合筑巢的地方。多年来，海滩形态的变化会改变巢穴分布。
