The Root Zone Treatment System (RZTS) has been used widely for nutrient removal in European countries. In spite of having its more adaptability in tropical region like India its use to address nutrient induced issues in the country is very less.

The septic tank is commonly accepted as sewage treatment unit in isolated areas even if its performance is not consistent. The methods employed for disposal of such effluent are unsafe and needs careful attention to avoid risk to the public health. Constructed Wetland Treatment Systems (CWTS) have been used extensively now-a-days in some parts of the world for wastewater treatment.

The present communication enumerates 40 taxa of Oscillatoriaceae from the brackish water wetlands of North 24-Parganas district of West Bengal. Out of the reported taxa, 12 are from each of Lyngbya and Oscillatoria, 6 from each of Phormidium and Spirulina, 2 belong to Schizothrix, and Hydrocoleum and Katagnymene are represented by one species each.

Mangrove forests are extraordinarily diverse coastal communities anchored by salt-tolerant plants along certain tropical seacoasts. Their distinctive aerial roots help to trap sediment, prevent shoreline erosion, and provide habitat for a variety of sea life. Their unique mode of viviparous reproduction (producing seeds that germinate before becoming detached from the parent plant) allows for the rapid dissemination of viable young plants. Mangrove swamps or forests are among the most productive wetlands on the planet.