Ecological health status of the Lagos wetland ecosystems: Implications for coastal risk reduction

Lagos, a major urban agglomeration in the world is characterized by wetlands and basin for upstream rivers such as Ogun, Oshun and Yewa Rivers. Ongoing environmental pressures exerted by large-scale land reclamation for residential quarters, refuse and sewage dumping, and other uses, however, are su...

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Bibliographic Details
Published in:Estuarine, coastal and shelf science coastal and shelf science, 2016-12, Vol.183, p.73-81
Main Authors: Agboola, Julius I., Ndimele, Prince E., Odunuga, Shakirudeen, Akanni, Adeniran, Kosemani, Bosede, Ahove, Michael A.
Format: Article
Language:English
Subjects:
Ecosystem health
Management
Sediments
Vegetations
Water and air quality
Wetlands
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Summary:Lagos, a major urban agglomeration in the world is characterized by wetlands and basin for upstream rivers such as Ogun, Oshun and Yewa Rivers. Ongoing environmental pressures exerted by large-scale land reclamation for residential quarters, refuse and sewage dumping, and other uses, however, are suspected to have had a substantial impact on ecological health of the Lagos wetland ecosystems over the last few decades. To determine the impact of these pressures, we examined spatial changes in three wetlands areas- Badore/Langbasa (BL), Festac/Iba/Ijegun (FI) and Ologe/Otto-Awori (OO) through field sample collection and analyses of surface water, sediments, air-water interface gas fluxes and vegetations. Surface water conductivity, total suspended solids (TSS), alkalinity, chloride, biological oxygen demand (BOD), nitrate, phosphate and heavy metals (Zn, Cu, Fe, Na, Mn, Pb, Cd, K and Ni) exhibited relative spatial stability while other water quality parameters varied significantly (P 
ISSN:0272-7714
1096-0015
DOI:10.1016/j.ecss.2016.10.019