Publication Date:
2021-07-15
Description:
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 sampling sites. Anthropogenic activities such as industrial effuent, 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, C1 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, pH, general hardness, total alkalinity were also measured. Fe was the most concentrated metal in water (mean range 15.93 ~c 1.51 to 33.65 ~c 7.79mg/l) and in sediment (15748 ~c 3526 to 107702 ~c 84038 mg/1), while Cr and Mg were the least concentrated (0.34 ~c 0.14 to 0.53 ~c 0.09mg/l) and (0.07 ~c 0.01 to 0.22 ~c 08 mg/1) respectively. Generally, trace meta levels in sediment of the study area were relatively higher than tht concentration in water. Na was the most concentrated nutrient in both water and sediment, while calcium has 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 wetland 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.
Description:
Includes: 33 references.
Keywords:
Ecology
;
Limnology
;
Nigeria
;
Trace metals
;
Nutrient
;
Physico-chemical
;
Wetland
;
Enthropogenic
;
Policy intervention
;
freshwater environment
;
automation
Repository Name:
AquaDocs
Type:
conference_item
,
TRUE
Format:
application/pdf
Format:
application/pdf
Format:
200-205
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