title: Cyanobacteria in wetlands of the industrialized Sambalpur District of India.
abstract: BACKGROUND
  Cyanobacteria are common components of phytoplankton communities in most freshwater ecosystems. Proliferations of cyanobacteria are often caused by high nutrient loading, and as such can serve as indicators of declining water quality. Massive industrialization in developing countries, like India, has polluted fresh water bodies, including wetlands. Many industries directly discard their effluents to nearby water sources without treatment. In the Sambalpur District of India effluents reach the reservoir of the worlds largest earthen dam i.e Hirakud Dam. This study examines cyanobacteria communities in the wetlands of Sambalpur District, Odisha, India, including areas subjected to industrial pollution.
  
  
  CONCLUSIONS
  The genera Anabaena, Oscillatoria, Chroococcus, Phormidium were dominant genera of polluted wetlands of Sambalpur districts. A positive correlation was found between total cyanobacterial species and dissolved oxygen levels, but cyanobacterial diversity was inversely related to BOD, COD, TSS, and TDS. High dissolved oxygen content was also associated with regions of lower cyanobacteria biomass.
  
  
  CONCLUSIONS
  Cyanobacterial abundance was positively correlated to content of oxidisable organic matter, but negatively correlated to species diversity. Lower dissolved oxygen was correlated to decreased diversity and increased dominance by Anabaena, Oscillatoria, Chroococcus, Phormidium species, observed in regions characterized by deteriorated water quality.
authors.affiliation: CyanoLab, School Of Life Sciences, Sambalpur University, Jyoti Vihar, Burla, Sambalpur, Odisha 768019, India. binata_bga@yahoo.com.
authors.forename: Pratibha Rani
authors.initials: PR
authors.lastname: Deep
authors.forename: Shantanu
authors.initials: S
authors.lastname: Bhattacharyya
authors.forename: Binata
authors.initials: B
authors.lastname: Nayak