Assessment of Wetlands Dynamics in Bo City, Southern Region of Sierra Leone
Journal Title: Applied Sciences Research Periodicals (ASRP) - Year 2025, Vol 3, Issue 2
Abstract
Background and Goal of the Research: Wetlands are vital ecosystems that serve as critical links between aquatic and terrestrial environments, offering a wide range of ecosystem services such as biodiversity conservation, water purification, and flood control. However, rapid urbanization, pollution, and climate change have placed immense pressure on these ecosystems, leading to their degradation. In Bo City, Southern Sierra Leone, urban expansion and socio-economic activities are significantly impacting wetland dynamics. This study aims to assess the distribution, diversity, and resource composition of wetlands in the city, providing insights to guide sustainable management and conservation strategies. Methodology: The research adopted a descriptive and exploratory design, utilizing field surveys, Geographic Information System (GIS) mapping, and biodiversity indices to analyze wetland dynamics. Quadrat and transect sampling methods were employed to document plant species and assess their abundance and distribution. Data on wetland size and ownership were collected, and statistical tools, including one-way ANOVA and diversity indices such as Shannon-Weiner and Simpson indices, were applied to evaluate ecological and ownership patterns. Results & Findings: The study identified 138 wetlands distributed across seven zones in Bo City, each with varying ecological and socio-economic characteristics. Larger wetlands (>6 hectares) were predominantly managed by caretakers, while government and community ownership were minimal. A total of 46 plant species were recorded, with species like Ipomoea aquatica and Commelina diffusa being the most abundant. Zone 5 exhibited the highest biodiversity, as evidenced by its Shannon diversity index (3.746), while Zone 7 showed the lowest diversity and evenness, reflecting the impacts of urban pressures. Ownership type significantly influenced wetland size stability (p = 0.007), while active biomonitoring demonstrated potential benefits for conservation. Conclusion: The findings highlight the ecological richness of Bo City’s wetlands and the threats posed by urban expansion and fragmented management. Effective conservation policies, enhanced stakeholder collaboration, and robust monitoring programs are essential to ensure the sustainability of these ecosystems. The study underscores the importance of balancing urban development with ecological preservation to protect the vital services provided by wetlands in Bo City.
Authors and Affiliations
Jonathan Johnny, Moses Haward, Samuel Maxwell Tom Williams, Nasrie Sesay
Keywords
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Assessment of Wetlands Dynamics in Bo City, Southern Region of Sierra Leone
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