Zoology-Scholarly Publications

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Browsing Zoology-Scholarly Publications by Author "Adeyemo, O.K."

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    Open Access
    Biomonitoring of aquatic pollution: status and trends from genomics to populations
    (The Nigerian Academy of Science, 2020-12-31) Adeyemo, O.K.; Sogbanmu, Temitope O.; Selim, A.A.; Denslow, N.D.
    Biomonitoring offers an appealing tool for the assessment of pollution in aquatic ecosystem. Biological processes, species, or communities of bioindicators are used to assess the quality of the environmentand how it changes over time. Bioindicators include algae, macrophytes, zooplanktons, insects, bivalves, molluscs, gastropods, fish, amphibians, and others. Changes in aquatic ecosystems are often attributed to anthropogenic disturbances, including pollution. Major contributors to aquatic pollution include wastewater, metals and metalloids, industrial effluents, contaminated sediments, nutrients, polycyclic aromatic hydrocarbons, flame retardants, persistent organic pollutants, pharmaceuticals and illicit drugs, emerging contaminants (such as microplastics and engineered nanoparticles), pesticides, herbicides, and endocrine disruptors. In this review, we discuss categories of aquatic pollutants, status and trends of aquatic biomonitoring and approaches, from genomics to populations. We conclude by offering recommendations for research and regulatory testing.
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    Open Access
    How sawmill wastes impact surface water, sediment, macrobenthic invertebrates and fish: A case study of the Lagos lagoon, Okobaba area, South-Western Nigeria
    (Springer Nature, 2021-03-29) Faremi, O.E.; Sogbanmu, Temitope O.; Adeyemo, O.K.
    The Okobaba area of the Lagos Lagoon, Nigeria, is characterised by sawmilling activities which are potential threats to resident aquatic organisms. This study was aimed at evaluating the effect of sawmilling activities on the environmental quality of the Lagos lagoon at Okobaba area, Lagos, Nigeria. Surface water, sediment, macrobenthic invertebrates, and fish species were sampled monthly from six stations for 3 months (July–September 2018). Relevant stakeholders were administered a cross-sectional questionnaire to determine their knowledge of the environmental effects of their activities. Environmental samples were analysed following standard methods. Descriptive and inferential statistics were performed using SPSS 20.0 and PAST 1.97. Results showed that surface water dissolved oxygen and chemical oxygen demand were significantly lower, while sediment total organic matter and nitrates were significantly higher at the test site compared to the reference site. A total of 389 macrobenthic invertebrates comprising eight species and two macrobenthic invertebrates comprising one species as well as 121 fishes comprising nine species and 70 fishes comprising nine (9) species were recorded at the reference and test sites respectively. About 46.3% of respondents alluded to improper waste disposal as the major cause of pollution at the test site among others, 66.7% responded that wastes were disposed of by burning among other disposal methods, and 66.6% agreed that the sawmilling activities contributed to reduction of aquatic animal population. We recommend urgent regulatory intervention to address the indiscriminate discharge of wastes and facilitate adequate environmental risk advocacy to sustain life below water (United Nations Sustainable Development Goal 14).
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    Open Access
    SDG 14 -life below water: trend and trajectory in Nigeria
    (The Nigerian Academy of Science, 2020-12-31) Adeyemo, O.K.; Sogbanmu, Temitope O.
    Guest Editorial for the Proceedings of the Nigerian Academy of Science (Themed Edition on Sustainable Development Goal 14)