The physico-chemical conditions of air, water and soil, and biological conditions of the proposed Coal based Power Plant area (Rampal), Mongla and the Sundrabans were studied from August 2011 to July 2013 to assess the possible environmental impact on the Sundarbans and surrounding areas. Environmental Impact Assessment (EIA) of physical, biological, social and economic environment of the study areas indicate that most of the impacts of coal-fired power plant are negative and irreversible (-81) which can't be mitigated in any way. It is indicating that climate, topography, land use pattern, air and water quality, floral and faunal diversity, aquatic ecosystems, capture fisheries and tourism of the Sundarbans and the surroundings areas would be affected permanently due to proposed coal fired power plant. Increasing of water logging conditions, river erosion, noise pollution and health hazards; decreasing of ground water table; loss of culture fisheries, social forestry and major destruction of agriculture would be happened due to coal fired power plant. The benefits of proposed coal fired power plant of Rampal is very poor (S+19) than that of negative irreversible impact (-81). So the proposed area is not suitable to establish the coal based power plant as the Sundarbans and surrounding areas would be affected permanently by establishing the proposed coal power plant.

Sixteen physico-chemical variables, and the diversity and abundance of phyto- and zooplankton of two fishponds in Khulna University Campus have been studied during October 2003 and September 2004. A total of 25 phytoplankton genera, 7 belonging to Cyanophyceae, 7 to Chlorophyceae, 8 to Bacillario-phyceae and 3 to Euglenophyceae, and 18 zooplankton genera, 4 belonging to Copepoda, 7 to Cladocera and 7 to Rotifera, were recorded. Both ponds were permanently alkaline in nature. The values of TDS, BOD and phosphate, and the current status of plankton population imply that the study ponds were eutrophic in nature. Key words: Fishponds, physico-chemical conditions, plankton population, Khulna Univ. j. zool. Rajshahi Univ. Vol.25 2006 p.41-44

A total of 38 zooplankton genera and 26 physico-chemical variables were recorded in Trimohini Beel. This beel marked as a medium level of polluted wetland based on the values of the redox characteristics i.e. pH, DO, BOD, COD, Eh and rH 2 , chlorides, nitrites, ammonium, phosphate values etc. and on the presence of some zooplankton as indicator of pollution. A large number of inland fresh water non-culturable fishes and other aquatic biota of the Trimohini Beel may be eliminated in future due to mixing of continuous chemicals from agriculture fields. It is necessary to conserve the ecosystem of Trimohini Beel for the fresh water non-culturable fishes and other aquatic biota.

Ceramium brevizonatum var. caraibica Peter. et Børg., Dasya corymbifera J. Ag., Dudresnaya hawaiiensis R.K.S. Lee, Chrysymenia agardhii Harv. and Hypnea boergesenii Tanaka are recorded and described for the first time from the St. Martin's Island, Cox's Bazar, Bangladesh. Key words: Seaweeds; Red algae; Dudresnaya hawaiiensis; St. Martin's Island; Bangladesh DOI: 10.3329/bjb.v39i1.5531Bangladesh J. Bot. 39(1): 87-96, 2010 (June)

Studies were carried out on the recent oil spill in the Sundarbans of Bangladesh to findout the immediate impacts on the ecosystem of the Sundarbans after oil spilling. Morethan 500 km2 areas out of the total study area have been affected seriously by the oil spillcontamination on 9 December 2014. Recorded data of the physico-chemical conditions,oil content, productivity, diversity and abundance of phyto-zooplankton and benthos ofwater, and oil content in soil indicate that the water and soil of the Eastern part of theSundarbans were polluted by the oil contamination. Results also indicate that seedlings,mangrove algae, eggs and hatchlings of commercially valuable fishes, mudskippers, mudcrabs, snails, monitor lizards were affected due to oil spill. Regeneration of the Sundritrees; intertidal zone bird - ‘Masked finfoot’, common birds, fishing cat, otter, dolphins,crocodile would be affected due to the oil spill. Long term monitoring, in depth researchand proper implementation of all rules and regulations are necessary to save the fragileecosystem of the Sundarbans-the UNESCO declared world heritage site. Asiat. Soc. Bangladesh, Sci. 41(1): 75-94, June 2015