Three lakes (Nainital, Sattal and Naukuchiatal) in the Kumaun Himalayan region were investigated for total organic carbon and nitrogen, their atomic ratios and isotopic composition in their sediments. These geochemical proxies measured in 34-45 cm long cores indicate that organic matter preserved in the lake sediments is primarily derived from algal matter.
The Nellurhalli lake in Whitefield is in a state of total decay, with sewerage lines discharging effluents from factories and a private hospital in the vicinity.
The lake has been reduced to a polluted water body with hyacinths and carcasses, garbage on the banks and encroachments along the periphery.
The biomonitoring of water quality in Bhadrakali lake Warangal, was assessed by using Odum's algal index in four sites during October 2004 to September 2005.The higest range of Odum's algal index was in between 300 to 400 with Microcystis, Nodularia, Trichodesmium, Chlamydomonas, Cladophora, Spirulina.
Water and Sanitation Agency (WASA) has complained of escalating cost of cleaning water at Rawal Dam blaming the Capital Development Authority (CDA) for letting pollutants into the lake untreated.
A WASA official told Daily Times on Tuesday that examination of samples collected by WASA from the lake found a high quantity of coliform bacteria in the water, which was dangerous to health.
Lok Adalat has directed the BBMP Commissioner to conduct a survey of the City lakes and submit a report including the blue print for the lakes within the BBMP limits, and initiate strict action against the contractors polluting the lakes.
An investigation of lakes in Sweden has delivered results that run counter to the idea that primary production is generally limited by the availability of nutrients. There are lessons for limnologists in this.
The beautification plan for Line Tank can well be its death knell, too.
The irony of the project is that the Ranchi Municipal Corporation (RMC), its custodian, was not taken into confidence about the damaging changes being effected by the Ranchi Regional Development Authority (RRDA), the agency in charge of the beautification plan.
