International Journal of Applied Research
Vol. 2, Issue 4, Part F (2016)
Biogeography and distribution of bacillariophyceae in the highland rivers of India
Fifty one, fifty and forty three genera are recorded from the West Himalaya (Garhwal region), Central Highlands and Western Ghats, respectively. Thirty six genera are common to these three biogeographic regions of the Indian subcontinent. Currently, the Indo-Gangetic Plains separate the Himalaya and the Central Highlands but are connected by the Gangetic drainage. The Western Ghats and the Central Highlands are connected like ‘elbow’ at northern and western extremity, respectively and extend to south and east located perpendicular to each other. These two regions constitute the Deccan Peninsula the oldest part of the Indian subcontinent, a historical reason for high similarity between these two biogeographic regions. However, similarity with the Himalaya (part of the sub continent) created historically by recent upheavals, other geological activities in the Deccan and glaciations and current geography account for this high similarity. Preliminary investigations show presence of fifty eight genera from three biogeographic regions the Central Highland, West Himalaya and Western Ghats of the Indian subcontinent. Fifty one taxa were recorded from the Himalaya (Garhwal region), fifty from Central Highlands and forty three from Western Ghats. Thirty six genera were common to these three regions. Historical rather than geographical factors appear to have played a greater role, due to movement of landmasses and upheavals, which not only led to changes in the drainage patterns but also climatic conditions. The recently deglaciated high altitude locations in the Himalaya have not been geologically stable while the Central Highlands and the Western Ghats in the peninsula has been geologically stable.
How to cite this article:
Jyoti Verma, Anita Gopesh, Prakash Nautiyal. Biogeography and distribution of bacillariophyceae in the highland rivers of India. Int J Appl Res 2016;2(4):356-359.