Department of Physics, Chemistry and Biology (IFM)

My sincere gratitude to Anders Hargeby (my supervisor) who conceived the research idea and guided me through a successful research training under his careful supervision. 

I appreciate greatly the moral support of my beloved wife- Mrs. Shauna McKenzie-Onita throughout the period of this research.

To my teachers in the Masters programme in Ecology and Environment, IFM, Linköping University, Sweden: Per Milberg, Bo Ebenman, Uno Wennergren, Karin Tonderski, and Karl-Olof Bergman; for their immense contributions in impacting on me, the basic professional knowledge required in becoming a successful ecologist. Thank you all