Explain why high numbers of certain species are undesirable.

Explain why high numbers of certain species are undesirable. Illustrate the answer with examples. What species are on the verge of extinction? What measures need to be taken to preserve them?

Amur tiger Status: Endangered Threats: In the 1930s, the number of Amur tigers was no more than 50 individuals, and according to some sources, no more than 20-30. By the 1980s, systematic conservation efforts bore fruit, the number of animals increased to 200. The main threat to the existence of big cats has always been poaching. A tiger bone is worth its weight in gold on the Chinese black market, and a tiger skin is a coveted trophy. In the late 1980s, the demand for tiger bone increased sharply, and well-organized gangs of poachers severely crippled the tiger population at this time. Only by 1993 were the programs for the conservation of the Amur tiger resumed, and already in 1996 their number approached 430. Today, the number of tigers living in the wild is estimated at 431 – 529 individuals. Large-scale illegal logging and forest fires, which deprive them of their habitats, have also become a serious threat to tigers.