Being One Of The Earliest Living Forms Originated On This Planet, Blue Green Algae (Cyanophytes/Cyanobacteria) Have Successfully Lived Through A Variety Of Environmental Abiotic Stresses, Such As Extreme Heat Of The Primitive Earth, Anaerobiosis Prevalent At The Time Of Their Origin To Subsequent Oxygeny For Which They Have Been Responsible. Over The Years They Have Adapted Themselves To Several Man-Made Stresses Like Various Types Of Industrial Effluents Of Different Chemical Make-Up, Chemical Fertilizers, Pesticides, Heavy Metals, Etc. For These Reasons They Are Considered As An Appropriate Model System For Studies Of Stress And Adaptive Responses. The Book Contains Information On Ecophysiological Responses Of Blue Green Algae In Habitats Polluted By Different Types Of Industrial Effluents, E.G. The Untreated Effluent Released From A Molasses Distillery, Sponge-Iron Industry And A Fertilizer Factory. Interaction Of Nitrogen Fixing Blue Green Algae In Rice Fields To Different Commercial Pesticides Has Also Been Described. The Blue Green Algal Forms Colonizing The Exposed Surface Of Archaeologically Important Temples And Monuments Of Various Regions Of India Is Given. Survival Strategies Of Blue Green Algal Species On The Exposed Rock Surfaces As Well As In The Crust On Dried Soils Of Rice Fields Under Temperature And Desiccation Stress Has Been Presented. Ecophysiology Of Thermal Blue Green Algae Has Also Been Described. It Would Serve As A Reference Book For Researchers In Universities And Research Institutions Working On Adaptation Of Plants And Microorganisms To Environmental Stresses And Also For Botany, Microbiology And Environmental Science Students At M.Sc. Level.
The book presets a detail account of algae of Chilika Lake, the largest brackish water lagoon in Asia, in the East coast of India. The algal forms of the lake were collected during the year 1999 to 2001, documented with microphotograph and camera lucida diagrams and identified by us. The taxonomic account of these algal forms has also been prepared. Besides the documentation of algal forms, resource mapping and biomass estimation of economically important algal species in different salinity gradients of the lake was carried out for the first time and presented in this book. Viable protocol for agar-agar extraction from Gracilaria verrucosa occurring in the lake and its possible commercial exploitation is also given. Details of algal forms presented in this book with descriptions, photographs, line diagrams and site of occurrence in Chilika lake can be used as a monograph for future study of algal diversity changes in Chilika lake and other wetlands elsewhere. Contents Chapter 1: Chilika Lake and its Biodiversity; General features of Chilika lake, Origin and history of the lagoon, Importance of Chilika lake, Chilika lake as a Ramsar site, Hydrology and water quality, Climate, Problems encountered by the lake, Biodiversity of Chilika lake, Biodiversity of marine algae in the brackish water lakes, estuaries and coastal regions of India; Chapter 2: Algal Flora of Chilika Lake; The study sites, Collection, observation and identification, Systematic account of algae of Chilika lake; Chapter 3: Algal Biomass of Chilika Lake at Different Salinity Gradient; Physico-chemical characteristics of water, Biomass of macro-algae of Chilika lake, Biomass of phytoplankton of Chilika lake; Chapter 4: Agar Yield of Gracilaria verrucosa at Different Salinity Gradients of Chilika Lake, Pre-treatment of the material, Extraction of agar, Yield of agar, Gelling temperature, Melting temperature, Gel strength, Estimation of 3,6-anhydrogalactose, Estimation of sulphate contents in agar.
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