B P International

Lagos lagoon is known to contain a vast number of anthropogenic stressors that resulted from the influx of human activities due to the increase in human population, industries and incursion of contaminants from adjoining thus making the ecosystem highly contaminated. The degree of this contamination can be affected by the seasonal variations in time and space. The spatial and temporal variations in the hydrochemistry and sediments characteristics of three (3) Lagos lagoon’s creeks were investigated for six months (June, 2016 to November, 2016). Sub-surface water and sediments were collected with a 1 dm 3 water sampler and Van-veen grab, respectively and analyzed. Water temperature, pH, dissolved oxygen and conductivity of the water samples and pH, nutrients (nitrate and phosphate), total organic matter (TOM) and total organic content (TOC), alkalinity, acidity and particle size of the sediment samples were analyzed. The physico-chemical parameters in the water and sediment from the ...

Aims: The present study intended to investigate the pigment composition of four selected mangrove plants viz., Avicennia officinalis, Excoecaria agallocha, Rhizophora mucronata and Sonneratia alba and water and sediment samples. And to quantify the concentration of various pigments found in the above samples. Place and Duration of Study: The samples were collected from the mangrove creeks of Chirackal and Kattiparambu of Ernakulam district, Kerala. Duration of the study was from 2013 December to 2015 December. Methodology: The estimation of the total pigments, chlorophyll a, chlorophyll b and carotenoid concentration of the biotic samples, water and sediments were done using standard methods in Spectrophotometer. Results: Plants showed high pigment concentration compared to water and sediments. High chlorophyll ‘a’ (2 mg/g), chlorophyll ‘b’ (0.8 mg/g) and total chlorophyll (2.74 mg/g) were observed in Excoecaria agallocha of Kattiparambu and carotenoids...