An average of 3 to 5 tigers are killed by poachers every year. Poachers hunt tigers primarily for their skin and bones which are sold for millions. In China and East Asian countries, the huge demand for tiger organs is increasing, and the world's endangered animals, the tigers, are dying. According to environmentalists, after 1975 the Sundarbans did not have any more tigers.

In 1999, up to 10 km around the forest was declared an 'Environmentally Critical Area' or ECA. And according to the Environment Protection Act, any type of factory is prohibited in ECA. Whereas in a document presented to the court by the Ministry of Environment, Forest and Climate Change itself, it is said that 190 factories have valid permission to set up within 10 kilometers of the Sundarbans. The actual situation is more delicate. In the last eight to ten years, more than half a hundred heavy industrial companies have been established. These include hazardous factories like cement factories, LP gas plants, oil refineries, bitumen, sea food processing. And their liquid waste is dumped into the Pashur river, which then flows into the Sundarbans, polluting the water and soil.

According to local fishermen, the reproductive capacity of fish has decreased compared to earlier. Many fish are almost extinct. Among them are pangas, chakkhoda, bangas, kaine, medamachh, chakul/shapla pata, armash, bashpata, gulemachh, chamogulo, fesha, kharkull, kaibol.

Environmental activists claim that aquatic animals are disappearing due to illegal use of pesticides, poisoning and fishing in current nets. The number of crocodiles has decreased. Birds are not seen in the forest like before. For example, vultures, foxes, crows, ravens, owls, snakes, tortoises, parrots and no longer sighted there. And all this is happening due to climate change and environmental pollution, said local environmentalists.

Meanwhile, in 2010, the St. Petersburg World Tiger Conference in Russia announced the doubling of the number of tigers, but Bangladesh has not been able to achieve that goal yet.

In this regard, Professor Monir H Khan said, the impact on the living environment of forest animals is damaging their foodchain, and thus the animals are becoming extinct. Which is an ominous sign for animal diversity. If this continues, the country's economy will suffer along with the eco system and therefore the government must take necessary steps now.

Monir H Khan recommends taking adaptive measures to maintain the lifestyle of biodiversity. Along with that, he also talked about regular monitoring to prevent environmental pollution in the forest.

Mihir Kumar Do, forest conservator of Khulna region, said that they do not have any exact information regarding the biodiversity inside the forest. However, police personnel patrol the forest to prevent illegal activities.

Sundarbans is the largest mangrove forest in the world. Its area is 6017 square kilometers. On 4 February 1999, an area of about 14,300 hectares of forest was declared as a sanctuary for wildlife. However, due to natural calamities such as floods, landslides, river erosion, most of the local residents of the area are making a living by cutting trees in the forest, illegally fishing and damaging the nature of the forest in various ways. Therefore, the environmentalists also urges to government to make alternative arrangements for their livelihood.

* Pinky Akter is a freelance writer

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