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Trends in Applied Sciences Research
  Year: 2014 | Volume: 9 | Issue: 10 | Page No.: 588-597
DOI: 10.3923/tasr.2014.588.597
 
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Assessment of Chemical and Nutrient Characteristics of Selected Wetland Waters and Sediments in Bo-Moyamba Districts, Southern Sierra Leon

Olapade Olufemi Julius and Tarawallie Sheku

Abstract:
The impact of anthropogenic activities on chemical and nutrient characteristics of selected wetlands in Moyamba and Bo districts was investigated. Water and sediments samples for nutrient and trace metal analysis were collected for two seasons (wet and dry) at eight sampling sites. Anthropogenic activities such as industrial effluent, domestic and agricultural waste disposal constitute major sources of wetland pollution in the selected districts. Samples of water and soil were analyzed for metals (Cr, Co, Cd, Ni, Pb, Mg, Mn, Fe, Cu and Zn) and nutrients (Ca, K, P and Na) levels were determined and their seasonal variations were compared at (p>0.05) significant levels. Physico-chemical parameters such as temperature, dissolved oxygen, ammonia, nitrate, nitrite, pH, general hardness and total alkalinity were also measured. Fe was the most concentrated metal in water (mean range 15.93±1.51 to 33.65±7.79 mg L-1) and in sediment (15748±3526 to 107702±84038 mg L-1), while Cr and Mg were the least concentrated (0.34±0.14 to 0.53±0.09 mg L-1) and (0.07±0.01 to 0.22±0.08 mg L-1), respectively. Generally, trace metal levels in sediment of the study area were relatively higher than the concentration in water. Na was the most concentrated nutrient in both water and sediment while calcium was the least. Calcium plays an important role in blood clotting, muscular contractions and in some enzymatic processes and as such its level in the studied wetlands must be augmented. Accumulations of metals in the environmental matrices are ecologically undesirable as they pose threats to man who is the end user of the values of wetland ecosystems and consequently the need for policy intervention in the effective management of both domestic and industrial wastes.
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How to cite this article:

Olapade Olufemi Julius and Tarawallie Sheku, 2014. Assessment of Chemical and Nutrient Characteristics of Selected Wetland Waters and Sediments in Bo-Moyamba Districts, Southern Sierra Leon. Trends in Applied Sciences Research, 9: 588-597.

DOI: 10.3923/tasr.2014.588.597

URL: https://scialert.net/abstract/?doi=tasr.2014.588.597

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