The Hindu, September 15, 2006
Munnar: How many Nilgiri tahrs are there in the wild?
According to a paper presented at the fourth World Congress on Mountain
Ungulates, the present population of the Nilgiri tahr is likely to be
much lower than what is generally believed. The paper, presented by R.J.
Ranjit, P.S. Easa, K. Ramkumar, Pratheesh C. Mammen and Mohan Alembath,
states that the long quoted figures of 2,000-2,500 animals in the wild
seem to be an overestimation.
Limited presence
The
Nilgiri tahr is among the few species of mountain goats that have
adapted to a cold and wet tropical environment. Today, the endemic and
endangered tahr is limited to a very small geographical area that does
not exceed five per cent of the Western Ghats. The reason for this
rather local distribution is the preference for a habitat that is
predominantly of grassland sheltered by steep rocky cliff that receives
over 1,500 mm of rainfall annually and enjoys dry season. Such a
tropical habitat is restricted to just six or seven high altitude
landscapes of the south Western Ghats.
The current
geographical range of the tahr is less than 400 km north-south, between
the Nilgiri Hills and Kanyakumari Hills in the Western Ghats. Over the
short range and within the six identified tahr landscapes, 18 locations
continue to support small to large populations of the tahr. Local
populations vary in size between 30 and 500 animals. Estimates made at
various times during the last 30 years have placed the population
between 2,000 and 2,500.
Call for research
According
to A.J.T. Johnsingh of the Nature Conservation Society, research should
be conducted in many more species that have been left uncovered.
India's rich diversity of mountain ungulates includes 19 species,
belonging to 12 genera, four families and two orders. The quantum of
ecological research on the animals varies, with only five species being
relatively well studied. In general, species that are rare and occur in
physically or administratively inaccessible areas have been less
researched.
Conservation also varies with six species numbering less than 1,000 and three between 1,000 and 2,000.
Fragmented population
In
his plenary talk, Dr. Johnsingh said the Tibetan gazelle with a
fragmented population of less than 200 in Ladakh and North Sikkim was on
the verge of extinction. The species is in need of urgent participatory
species recovery programme. Listing out the ungulates that face threat
in India, Dr. Johnsingh said conservation requisites for the mountain
ungulates differ.
International cooperation can help safeguard many of the species.