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      https://www.ias.ac.in/article/fulltext/jbsc/039/04/0643-0657

    • Keywords

       

      Canonical correspondence analysis; cold desert; cyanobacterial diversity; high altitude lakes; limnology

    • Abstract

       

      Limnological data of four high altitude lakes from the cold desert region of Himachal Pradesh, India, has been correlated with cyanobacterial diversity. Physico-chemical characteristics and nutrient contents of the studied lakes revealed that Sissu Lake is mesotrophic while Chandra Tal, Suraj Tal and Deepak Tal are ultra-oligotrophic. Based on morphology and 16S rRNA gene sequence, a total of 20 cyanobacterial species belonging to 11 genera were identified. Canonical correspondence analysis distinguished three groups of species with respect to their occurrence and nutrient/physical environment demand. The first group, which included Nostoc linckia, N. punctiforme, Nodularia sphaerocarpa, Geitlerinema acutissimum, Limnothrix redekii, Planktothrix agardhii and Plank. clathrata, was characteristic of water with high nutrient content and high temperature. The second group, including Gloeocapsopsis pleurocapsoides, Leptolyngbya antarctica, L. frigida, Pseudanabaena frigida and N. spongiaeforme, occurred in oligotrophic water with high pH and low temperature. The distribution of third group of Cyanobium parvum, Synechocystis pevalekii, L. benthonica, L. foveolarum, L. lurida, L. valderiana, Phormidium autumnale and P. chalybeum could not be associated with a particular environmental condition because of their presence in all sampling sites.

    • Author Affiliations

       

      Y Singh1 J I S Khattar1 D P Singh1 P Rahi2 A Gulati2

      1. Department of Botany, Punjabi University, Patiala 147 002, Punjab, India
      2. Plant Pathology and Microbiology Laboratory, CSIR – Institute of Himalayan Bioresource Technology, Palampur 176 061, Himachal Pradesh, India
    • Dates

       
  • Journal of Biosciences | News

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