Over the past two decade, the field of biolinguistic diversity has arisen as an area of transdisciplinary research concerned with investigating the links between the world’s linguistic, and biological diversity as manifestations of the diversity of life. Global cross-mapping of languages and higher vertebrate species brought out a remarkable overlap between linguistic and biological diversity throughout the world (Harmon1996). The impetus for the emergence of this field came from the observation that both diversities are under threat by some of the same forces and from the perception that loss of diversity at all levels spells dramatic consequences for humanity and the earth.
The study covers languages found in Kaffa zone (endemic to those regions), paying particular attention to languages in danger of extinction because of small numbers of speakers. The paper mainly deals with weather the correlation of linguistics and biodiversity in Kaffa Zone exist or not. The study result show that similar results from a comparison of languages and flowering plant and animal species. The area is experiencing an extinction crisis, with annual losses of plant and animal species estimated to be greater than historic background rates. Linguistic diversity is experiencing a similar crisis, the disappearance of Nao language by the end of this century unless and otherwise concrete measures taken.
The results reported in this paper provide a starting point for focused research exploring the relationship between biological and linguistic and for developing integrated strategies designed to conserve species and languages in regions rich in both.