KOLKATA: The nation will have to wait till monsoon to know the number of Royal Bengal Tigers in Sunderbans. While the numbers of wild tigers in rest of the nation are likely to come out in March, Sunderbans may not figure in that, as Wildlife Institute of India (WII) could complete only two phases of population estimation due to the mangrove forest's difficult ter-rain. Though, the distribution and occupancy data will be out soon.
"Humans are on the menu of tigers when they work in Sunderbans. While working we have found that one needs to be in a group and be very cautious. Overall, the nature of this mangrove forest makes the entire practice a time consuming matter," said WII's Qamar Qureshi, adding that the work of third phase has only started in September. WII, which is working in Sunderbans for almost three years has completed tiger signs collection, ungulate distribution and mapping of the forest. "We have collected scat information of the big cats, done camera traps and have radio collared a few tigers. Now, we are running the ungulate survey and sign survey of tigers to get the number. DNA sampling too will be done in this phase," said Qureshi.
According to him, it can come out with the number of tigers in Sunderbans only in the monsoon. "We are trying our best to make the numbers available by March with the figures of other parts of India, but it seems difficult," he said. Earlier, National Tiger Conservation Authority (NTCA), deputy inspector general, S P Yadav told TOI that the entire census report may get delayed by a couple of months as the Centre would not compromise on standard and reliability.
"Sunderbans is a habitat that is notoriously difficult to negotiate, apart from creek access at high tide. It is thus difficult to scientifically physically estimate the population of tigers here. This is why both the West Bengal forest department and WII are finding it justifiably difficult to arrive at a credible tiger estimate," said Bittu Sahgal, editor, Sanctuary Asia.
Meanwhile, WII will submit its preliminary report on distribution and occupancy of tigers to the Centre in a few weeks. Without divulging much, Qureshi said, forest occupancy of big cats in Sunderbans though will figure in the report. It may be noted that according to the last census in 2008, occupancy of tigers in Sunderbans was about 1586 square kilometres, though the numbers could not be assessed due to lack of reliability.
The last census done in Sunderbans in 2001-02, put the tiger numbers in Indian part of the mangrove forest at 274, of which, Sunderbans Tiger Re-serve had 249 and South 24-Parganas forest division had 25 big cats. But in 2006, Indian Statistical Institute claimed that the number is not more than 75, the report, however, was rejected by the state government. "I personally doubt that 274 cats ever existed in the Sunderbans. Nevertheless, the habitat is imminently suitable for tigers which, apart from herbivores, also feed on carrion washed down by rivers or thrown up by the sea. One way or the other I expect the Sunderbans tiger estimation to surprise everyone," added Sahgal.
"Population estimation is being done by a new methodology called Monitoring of Tigers, Co-predators, Prey and Habitat', developed by the Project Tiger. But work in the final phase is still left and we don't think the Centre will be able to come out with Sunderbans tiger numbers in time," said principal chief conservator of forests Atanu Raha. In Sunderbans, about 35 teams, with 250 forest personnel are taking part in the process.
No comments:
Post a Comment