1. Environmental Management and Crop Production Unit, College of Agriculture, Engineering and Science, Bowen University, Iwo, Nigeria
2. Department of Geography, Obafemi Awolowo University, Ile-Ife, Osun, Nigeria
3. Pure and Applied Biology Programme, College of Agriculture, Engineering and Science, Bowen University, Iwo, Osun, Nigeria
4. Department of Geography, University of Ibadan, Ibadan, Nigeria
5. Department of Civil Engineering, University of Bradford, Bradford, West Yorkshire, UK