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Using living corals collected from Okinawan coral reefs, laboratory experiments were performed to investigate the relationship between coral calcification and aragonite saturation state (W) of seawater at 25∞C. Calcification rate of a massive coral Porites lutea cultured in a beaker showed a linear increase with increasing Waragonite values (1.08–7.77) of(More)
The flowing water was collected from very small creeks and seepage water from small dug holes at three different areas, viz. Manikchari, Ghagra and Muralipara in Rangamati district of Chittagong Hill Tracts, Bangladesh to investigate the impact of the existing varied land covers on water quality. Chemical analyses shows that flowing creek water from either(More)
We report the effects of shifting cultivation on water quality in 16 creeks investigated once in 2007 and twice in 2008 in 16 apparently similar small neighboring watersheds, each of 3 to 5 ha, at four locations around Barkal sub-district under Rangamati District of Chittagong Hill Tracts in Bangladesh. Concentrations of SO4 2− and K+, and pH in creek water(More)
A study was conducted in Kaptai reservoir, one of the largest man-made freshwater lakes of South-east Asia, to determine present status of water quality and its suitability for fishing and other uses. Water samplings were from middle part of the reservoir at 0.2 and 0.8 fractional depths at five different locations from upstream to downstream viz.(More)
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