Photo de stock - The numbers of the world unique giant eland and other speices are declining in Senegal's largest national park, Niokolo Koba, Czech zoologist and photographer Tomas Junek has told CTK, Tambacounda, Senegal. Czech scientists conducted a study on the surviving of critically endangered animals with the use photo traps in the park. The park is the last refuge of wild animals in its part of Africa, but it has a bad infrastructure and insufficient protection of animals and it suffers from poaching and burning down of vegetation, Junek said. Scientists from the Czech University of Life Sciences (CZU) in Prague found 11 species of ungulate, 14 species of beasts of prey and four species of primates and they mapped poachers' activities. The park is entered in the UNESCO list of endangered heritage items. Junek said elephants, giraffes and the Senegal hartebeest have disappeared from the park. The scientists worked on the study for one year and their conclusions are based on more than 33,000 pictures from photo traps which they spread on an area of some 1000 square kilometres last year. Scientists from the Environment Faculty, the Derbianus Conservation organisation and the directorate of the national parks in Senegal also took part in the study. On the photo park rangers prepare their breakfast. (CTK Photo/Tomas Junek)