New Delhi: It was a moment of celebration when the Environment Minister announced that India's tiger population has increased by almost 16 per cent. But now, leading tiger scientist Ullas Karanth has questioned if there were problems with the methodology used.
In a published paper, Karanth has stated, "Details now in public domain do not reveal critical information on tiger photo-captures at sampled locations, density estimation protocols used, and how these local tiger numbers were extrapolated across wider regions".
Karanth an expert in the tiger ecology is in fact credited with developing the famous camera trap method for counting tigers instead of the earlier method of using pugmarks which was scientifically inaccurate. He has also questioned the mathematics of the
Government in arriving at the magic numbers.
"What I find a bit unconvincing across the country is the fact that on one hand it is claimed that the habitat is actually shrunk by 22 per cent, while the population density has gone up by 50 per cent in the remaining occupied area. I don't think there was enough data to come to this conclusion," said Ullas Karanth.
Dr Gopal of the National Tiger Conservation Authority, responding to Karanth, has stated that four states of Uttarakhand, Tamil Nadu, Maharashtra and Karnataka have shown increase in tiger density thereby pushing tiger numbers higher.
On the allegation of not putting reports in the public domain, he said that the detailed reports are available on the Environment Ministry website.
"Dr Karanth and his associates consider anything that has not originated from them as 'Substandard Science' and fake selective amnesia," said Dr Gopal.
Even as the war of words continues between the tiger scientists, the Environment Ministry maintains that the figures are correct, while others say the focus needs to shift to active protection on the ground.
http://ibnlive.in.com/news/scientist-points-out-loopholes-in-tiger-census/152710-3.html
Wednesday, May 18, 2011
The Tiger Paradox: Tiger area shrinks, number increases Subhro Niyogi, TNN
KOLKATA: Call it a tiger paradox. The number of tigers in India has increased from 1,411 to 1,706 in four years but the total no. of tiger area has shrunk from 9 million hectare to 7 million hectare. Tiger estimation based on camera trap and DNA testing was done after a gap of four years and new areas such as Sunderbans and parts of Maharashtra, Uttarakhand, Uttar Pradesh and North-east were included for the first time.
Despite that, south India and terrai region in Uttarakhand and Uttar Pradesh accounted for about 40% of tigers in India. South India now has the highest concentration of tigers anywhere in the world in a region whereas Corbett with around 220 tigers having highest tiger density in a reserve. There was no change in number of big cats in central India, touted as tiger capital, with decline in their numbers in Madhya Pradesh, Andhra Pradesh, Orissa and Jharkhand and an increase in Maharashtra, which has surprised wildlife experts.
"We don't agree with the number as of now," said PS Pable, MP's chief wildlife warden. There was also dissent on the estimation from Andhra Pradesh, Uttar Pradesh and Sunderbans, who doubted the methodology of the study. There were 150 tigers in Sunderbans as compared to 70 in present estimation.
http://timesofindia.indiatimes.com/home/environment/flora-fauna/The-Tiger-Paradox-Tiger-area-shrinks-number-increases/articleshow/8390798.cms
Despite that, south India and terrai region in Uttarakhand and Uttar Pradesh accounted for about 40% of tigers in India. South India now has the highest concentration of tigers anywhere in the world in a region whereas Corbett with around 220 tigers having highest tiger density in a reserve. There was no change in number of big cats in central India, touted as tiger capital, with decline in their numbers in Madhya Pradesh, Andhra Pradesh, Orissa and Jharkhand and an increase in Maharashtra, which has surprised wildlife experts.
"We don't agree with the number as of now," said PS Pable, MP's chief wildlife warden. There was also dissent on the estimation from Andhra Pradesh, Uttar Pradesh and Sunderbans, who doubted the methodology of the study. There were 150 tigers in Sunderbans as compared to 70 in present estimation.
http://timesofindia.indiatimes.com/home/environment/flora-fauna/The-Tiger-Paradox-Tiger-area-shrinks-number-increases/articleshow/8390798.cms
This Ranthambore papa takes motherhood seriously-Moushumi Basu
Takes care of two orphaned tiger cubs
In a rare sight in Ranthambore Tiger Reserve in Rajasthan, a male tiger has been spotted ‘fathering’ two orphaned cubs. The cubs had gone missing soon after the mother tigress had died in February. The forest officials took a sigh of relief recently when they found the cubs in the safe custody of the male tiger-T-25, believed to be their father.
“Such behaviour of the tiger has been unheard of,” said PCCF Rajasthan, RN Mehrotra.
The two cubs are being reared in the wild under close monitoring of the forest department. A forest staff has been deputed full time to keep watch on the cubs. They are largely being fed with goat meat by the forest department.
Mother Tigress T-5 from Kachida valley died in February after suffering from maggot-infested wounds below her tail. When the cubs disappeared after the death of the mother, worst was feared about their survival. But the officials had a pleasant surprise when they found the cubs in perfectly safe condition with the male tiger.
The known behaviour of male tigers is that of killing and preying upon the cubs, especially to take away the mother for mating. However, contrary to the above, “this unique sense of acceptance of the male tiger towards the cubs, is indeed amazing,” pointed out Mehrotra.
“This has led us to believe that he could be their father,” said Mehrotra. Incidentally, T-5 tigress had been seen mating with him, but Mehrotra said no certainty can be established about their parentage.
Much to the surprise of the experts, it was found that T-25 has even reduced its territory, confining itself largely in Kachida valley to ensure protection of the cubs. Further, the food served to the cubs by the forest department is not snatched away by the male tiger either. On the contrary, they have been seen sharing kills made by the latter.
“We are yet lot to learn on the behaviour of the tigers,” pointed out Mehrotra. They are nocturnal animals and what ever activities have so far been recorded have largely been done during day. But this time, due to the extensive use of camera trapping and “intimate monitoring of these tigers, we could discover this new trait,” he added
http://www.dailypioneer.com/339469/This-Ranthambore-papa-takes-motherhood-seriously.html
In a rare sight in Ranthambore Tiger Reserve in Rajasthan, a male tiger has been spotted ‘fathering’ two orphaned cubs. The cubs had gone missing soon after the mother tigress had died in February. The forest officials took a sigh of relief recently when they found the cubs in the safe custody of the male tiger-T-25, believed to be their father.
“Such behaviour of the tiger has been unheard of,” said PCCF Rajasthan, RN Mehrotra.
The two cubs are being reared in the wild under close monitoring of the forest department. A forest staff has been deputed full time to keep watch on the cubs. They are largely being fed with goat meat by the forest department.
Mother Tigress T-5 from Kachida valley died in February after suffering from maggot-infested wounds below her tail. When the cubs disappeared after the death of the mother, worst was feared about their survival. But the officials had a pleasant surprise when they found the cubs in perfectly safe condition with the male tiger.
The known behaviour of male tigers is that of killing and preying upon the cubs, especially to take away the mother for mating. However, contrary to the above, “this unique sense of acceptance of the male tiger towards the cubs, is indeed amazing,” pointed out Mehrotra.
“This has led us to believe that he could be their father,” said Mehrotra. Incidentally, T-5 tigress had been seen mating with him, but Mehrotra said no certainty can be established about their parentage.
Much to the surprise of the experts, it was found that T-25 has even reduced its territory, confining itself largely in Kachida valley to ensure protection of the cubs. Further, the food served to the cubs by the forest department is not snatched away by the male tiger either. On the contrary, they have been seen sharing kills made by the latter.
“We are yet lot to learn on the behaviour of the tigers,” pointed out Mehrotra. They are nocturnal animals and what ever activities have so far been recorded have largely been done during day. But this time, due to the extensive use of camera trapping and “intimate monitoring of these tigers, we could discover this new trait,” he added
http://www.dailypioneer.com/339469/This-Ranthambore-papa-takes-motherhood-seriously.html
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