NEW DELHI (AFP) ― More than 200 languages have vanished in India over the last 50 years, a new study says, blaming urban migration and fear among nomadic tribes of speaking their traditional tongues.

The extensive study, conducted throughout the country over four years and released this week, has found 230 languages have “elapsed” while another 870 have survived the test of time in richly diverse but rapidly modernizing India, home to a vast number of indigenous or tribal peoples.

Ganesh Devy, who spearheaded the survey, said 480 tribal languages are among those still spoken in India, where Hindi and English are strengthening their grip in an increasingly mobile and interconnected world.

“I am concerned and alarmed that a very large number of languages have been rapidly declining in India,” Devy, an author and founder of the non-profit Bhasha Trust, which seeks to preserve languages, told AFP.

Devy’s team of 3,000 volunteers fanned out across India, visiting communities in the most remote parts of the country of 1.2 billion people, to study and document living languages spoken and written today.

The team scrutinized evidence of the existence of a language such as a community’s use of folk songs and stories in their mother tongue as well as terms used for their geographical surroundings.

The team compared their findings with the results of a government census conducted in 1961 which stated that some 1,100 languages existed throughout the country.

The first five of some 50 detailed volumes of the team’s “People’s Linguistic Survey of India” will be released in New Delhi on Thursday.

Devy said languages of coastal communities seemed to have eroded the most over the years as traditional fishermen, whose livelihoods have declined, move inland in search of employment in cities.

“For coastal communities, hit adversely by changing sea-farming technology, a wonderfully abundant terminology for fish and waves is of no use in inland areas,” he said.