Occurrence Of Chelonia Mydas On The Island Of Trindade, Brazil. Occurrence Of Chelonia Mydas On The Island Of Trindade, Brazil. The island receives some 1,800 nests per year on 3 km of sandy beach. The island bottom has a length of 50 km and a depth between 3000-5000 m. From April to October seasonal cold air masses from the South Pole invade the island.
Island beaches vary in grain, texture and sediment color.
Local flora is marked by the presence of Cyathea coelandii , an endemic arboreal fern that reaches 6 m in height. Since April 1994, a permanent staff has been maintained on the island, with personnel alternating through two month shifts. Tagging and measuring of adult females has been done by technicians. Beach patrols are used to observe nesting ecology, the distribution and abundance of nesting females, and hatch success rates. Almeida, F. F. M. 1961.