Phytoplankton Response to Anthropogenic and Recreational Activities in The Watershed of a Resort Centre in Edo State, Southern Nigeria
doi.org/10.26538/tjnpr/v2i6.2
Keywords:
Phytoplankton,, aesthetic,, physico-chemical,, anthropogenic.Abstract
The aesthetic value of a water body is affected by anthropogenic activities which lead to increased nutrients and ultimately, changes in the physico-chemical properties of the water. This study assessed the influence of anthropogenic and recreational activities on the phytoplankton species of River Ule in Owan West Local Government Area of Edo State, from November 2015 to June 2016. Samples of phytoplankton species and physico-chemical parameters were collected at two stations using a 55 µm mesh phytoplankton net and 1 litre plastic container for physico-chemical parameters. Palmer pollution index was employed in the assessment of the level of pollution of the water body. The results from this investigation showed that nutrient concentrations in this study were low with no discernible trend across seasons. There was no significant difference in the physico-chemical parameters in both stations. A total of 54 individual phytoplankton species comprising 2 classes; Bacillariophyceae and Chlorophyceae were recorded with Bacillariophyceae being the most dominant. Lack of organic pollution was also observed in the study. In conclusion, the anthropogenic and recreational activities in the watershed of the study stations did not affect the aesthetic value of Olomo beach and had no stress on the phytoplankton composition. More so, the level of productivity in this investigation is low as a result of lack of abundant nutrient and low phytoplankton abundance in the catchment area. Hence, may not be suitable for fish production.
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