A systematic account of algae and cyanobacteria from different soil crusts in the Khasi Hills of Meghalaya
Carefulness M Dirborne, M Wanlambok Sanglyne, Papiya Ramanujam
In the present investigation, a total of 40 species were recorded from coloured soil crust located in different landuse type in Khasi Hills, Meghalaya. Cyanobacteria was recorded as the most dominant group represented by 31 species followed by Chlorophyceae, Trebouxiophyceae and Zygnematophyceae represented by 4 species, 3 species and 2 species respectively. Cyanobacteria were the major group in these crusts during the dry seasons while filamentous green algae mostly prevalent during wet seasons. Cyanobacterial genera of Scytonema and Stigonema were mostly dominant during the dry seasons while those of Oscillatoria, Schizothrix and Leptolyngbya were prevalent during the wet seasons. Green filamentous algae like Microspora and Zygnema were also observed during the wet seasons. Soil crust formed during wet seasons were greenish or blue green mats, crusts or patches while during the dry seasons, brown or blackish mats or crusts were observed.