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POPULATION OF TIGERS

28 Nov 2016
Rajya Sabha


1313.    SHRI MEGHRAJ JAIN:    
Will the Minister of ENVIRONMENT, FOREST AND CLIMATE CHANGE be pleased to state:

(a)    the details about the number of tigers in the country, State-wise;
(b)    whether the total number of tigers has increased during the last few years and if so, the details thereof, State-wise;
(c)    the details of methodologies adopted for tiger census; and
(d)    whether any accurate methodologies and scientific techniques have been adopted for the above census and if so, the details thereof?

MINISTER OF STATE (INDEPENDENT CHARGE) FOR ENVIRONMENT, FOREST AND CLIMATE CHANGE(SHRI ANIL MADHAV DAVE)

(a)    The assessment of the status of tigers, co-predators and their prey 2014 using the refined methodology has shown estimated number of 2226 (range 1945-2491) tigers in the country.  The State-wise details are at Annexure-I.  
(b)    All India Tiger Estimation, 2014 has shown a countrywide 30% increase in tiger numbers with an estimated number of 2226 (range 1945-2491 tigers) as compared to 2010 estimation of 1706 (range 1520-1909 tigers).  The details of tiger estimation pertaining to tiger landscapes, State-wise for the years 2010 and 2014 are at Annexure-II.
(c) & (d)    The countrywide assessment of tiger status uses a double sampling approach to estimate the distribution and abundance of tigers in India.  The first component of the double sampling consists of ground surveys of all potential tiger bearing forests in 18 States wherein the following information is collected by the State Forest Department personnel:
•    Ground surveys for determining occupancy of habitat by tigers and other predators
•    Line transects to estimate prey abundance
•    Sampling plots on the line transects to assess
o    habitat characteristics,
o    human impacts and
o    prey dung density.

Alongwith the information generated by the ground surveys, latest remotely sensed data on (a) landscape characteristics, (b) human “foot-print”, and (c) habitat attributes are subsequently used to model tiger occupancy and abundance.

The second component of the double sampling consists of (a) scientifically rigorous abundance estimation in select sampling units using a remote camera trap based capture recapture technique for estimating tiger and other carnivore abundance and (b) line transect based Distance sampling for estimating prey abundance.

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