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Kusum Komal Karati G. Vineetha N. V. Madhu P. Anil M. Dayana B. K. Shihab A. I. Muhsin C. Riyas T. V. Raveendran 《Environmental monitoring and assessment》2017,189(12):653
El Niño, an interannual climate event characterized by elevated oceanic temperature, is a prime threat for coral reef ecosystems worldwide, owing to their thermal threshold sensitivity. Phytoplankton plays a crucial role in the sustenance of reef trophodynamics. The cell size of the phytoplankton forms the “master morphological trait” with implications for growth, resource acquisition, and adaptability to nutrients. In the context of a strong El Niño prediction for 2015–2016, the present study was undertaken to evaluate the variations in the size-structured phytoplankton of Kavaratti reef waters, a major coral atoll along the southeast coast of India. The present study witnessed a remarkable change in the physicochemical environment of the reef water and massive coral bleaching with the progression of El Niño 2015–2016 from its peak to waning phase. The fluctuations observed in sea surface temperature, pH, and nutrient concentration of the reef water with the El Niño progression resulted in a remarkable shift in phytoplankton size structure, abundance, and community composition of the reef waters. Though low nutrient concentration of the waning phase resulted in lower phytoplankton biomass and abundance, the diazotroph Trichodesmium erythraeum predominated the reef waters, owing to its capability of the atmospheric nitrogen fixation and dissolved organic phosphate utilization. 相似文献
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E. Raveendran Ian C. Grieve Ismail M. Madany 《Environmental monitoring and assessment》1994,30(2):177-196
The present investigation studies the effects of cow and chicken manure and sewage sludge at different rates of addition and with two irrigation waters of different salinities on two major calcareous soils in Bahrain. The aim was to quantify potential improvements in soil quality, the accumulation of trace metals, and quality of leachates.From the pot experiments it was found that soil waterholding capacity did not change significantly after addition of organic amendments, except in the case of sewage sludge. Total organic carbon and total Kjeldhal nitrogen content increased in the 0–5 cm layer. Low salinity water and sewage applications improved aggregate stability. Extractable phosphorus was enhanced by the chicken manure treatment more than others. Addition of different organic amendments did not affect exchangeable cations. pH values did not show appreciable changes and soils were neutral. Trace metals studied were present at non-toxic levels in the 0–5 cm layer. Zinc and copper were the only metal showing a tendency to leach to the lower soil layer. In all cases metal levels in the surface layer were proportional to the quantities added in the amendments and their levels in the leachate were very low. 相似文献
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Rajasekharan Reshmy Bahuleyan Arun Karthika Madhavan Aravind Philip Eapen Sindhu Raveendran Binod Parameswaran Kumar Awasthi Mukesh Pandey Ashok 《Environmental science and pollution research international》2023,30(4):8977-8986
Environmental Science and Pollution Research - The use of jackfruit peel as a source for natural and fully biodegradable “nanocellulose” (NC) for the production of bioplastics with... 相似文献
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Preeti Ranjan Reena Rooben Sindhu Raveendran Awasthi Mukesh Kumar Pandey Ashok Binod Parameswaran 《Environmental science and pollution research international》2023,30(4):9036-9047
Environmental Science and Pollution Research - (S)-1-(1-naphthyl) ethanol (SNE) is a chiral drug intermediate for the production of mevinic acid analog, a potent cholesterol agent. It acts as an... 相似文献
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Padmavathy Saji Raveendran Chockalingam Murugan Paradesi Kamaraj Nithyanandhan Glivin Godwin Thangaraj Venkatesh Moorthy Bharathiraja 《Environmental science and pollution research international》2022,29(57):85945-85954
Environmental Science and Pollution Research - Climate change is an important environmental issue that is causing global temperatures to rise. The primary environmental targets are to reduce carbon... 相似文献
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