Date:August 07, 2012

Dr. Olugbenga John Owojori

Olugbenga John Owojori, PhD

Education

B. Sc. Zoology, Obafemi Awolowo University, Ile-Ife, Nigeria, 2000
M. Sc. Zoology, Obafemi Awolowo University, Ile-Ife, Nigeria, 2004
PhD Zoology, University of Stellenbosch, South Africa, 2009

Research Interests

My background and training are in the field of Invertebrate Zoology with emphasis on Soil Biology/Ecology but also on Aquatic Ecology. As such, I have experience on the biology and ecology of various soil organisms including earthworms, enchytraeids, ants, mites and springtails as well as aquatic species like freshwater snails. The focus of my research program is to better understand how natural changes in environmental variables and/or anthropogenic activities (including activities that cause habitat fragmentation, soil degradation, soil/water contamination) affect the abundance and diversity of these organisms whose roles in enhancing soil fertility are well known. This is with a view to protect the environment and maintain ecosystem health. I am particularly interested in how individuals, populations and communities of soil organisms respond to the aforementioned stress conditions using laboratory, semi-field (using mesocosm or Terrestrial Model Ecosystem) and full-fledged field studies. Recently, I have been exploring the use of biomarkers, protein and molecular genetics (ecotoxicogenomics) in understanding how abiotic and biotic stresses impacts on soil organisms especially as early warning system for impending danger at population level.

Publications

PUBLICATIONS IN PEER REVIEWED JOURNALS
1. Owojori O.J., Asaolu, S.O. and Ofoezie I.E (2006):.Ecology of Freshwater Snails in Opa Reservoir and Research Farm Ponds at Obafemi Awolowo University, Ile Ife, Nigeria. Journal of Applied Sciences 6(15): 3004-3015.
2. Owojori O.J., Asaolu, S.O. and Ofoezie I.E (2006):.Schistosomiasis: water contact pattern and snail infection rates in Opa Reservoir and Research Farm Ponds in Obafemi Awolowo University, Ile Ife, Nigeria.International Journal of Zoological Research, 2(4): 323-333.
3. Owojori, O.J., Reinecke, A.J., Rozanov, A.B. (2008). Effects of salinity on partitioning, uptake and toxicity of zinc in the earthworm Eisenia fetida. Soil Biology and Biochemistry. 40, 2385-2393
4. Owojori, O.J., Reinecke, A.J., Rozanov, A.B. (2009). Role of clay content in partitioning, uptake and toxicity of zinc in the earthworm Eisenia fetida. Ecotoxicology and Environmental Safety. 72, 99-107
5. Owojori, O.J., Reinecke, A.J., Rozanov, A.B. (2009). The combined stress
effects of salinity and copper on the earthworm Eisenia fetida. Applied Soil Ecology. 41
(3), 277-285
6. Owojori, O.J., Reinecke, A.J., (2009). Avoidance behaviour of two eco-physiologically different earthworms (Eisenia fetida and Aporrectodea caliginosa) in natural and artificial saline soils. Chemosphere. 75 (3), 279-283.
7. Owojori, O.J., Reinecke, A.J., Voua-Otomo P., Reinecke, S.A.(2009). Comparative study of the effects of salinity on life-cycle parameters of four soil dwelling species (Folsomia candida, Enchytraeus doerjesi, Eisenia fetida and Aporrectodea caliginosa). Pedobiologia. 52, 351-360.
8. Owojori, O.J., Reinecke, A.J., (2010). Effects of natural (flooding, drought) and anthropogenic (salinity and copper) stressors on the earthworm Aporrectodea caliginosa under field conditions. Applied Soil Ecology, 44 (2), 156-163.

CONFERENCE PRESENTATIONS
1. Owojori O.J., Asaolu, S.O. and Ofoezie I.E. (2004) :Ecology of Freshwater Snails in Opa Reservoir and Research Farm Ponds at Obafemi Awolowo University, Ile Ife, Nigeria Proceedings of the Annual Conference of the Nigerian Society of Environmental Management, O.A.U, lle Ife, Nigeria , May 12-13, 2004, pp 223
2. Owojori, O.J., Reinecke, A.J., Rozanov, A.B. (2008). Role of clay content in patitioning, uptake and toxicity of zinc in the earthworm Eisenia fetida. Proceedings of SETAC Europe 18th Annual meeting, Warsaw, Poland, May 25-29, 2008. p 215-216
3. Owojori, O.J., Reinecke, A.J., Rozanov, A.B. (2008). Influence of salinity on uptake and toxicity of zinc in the earthworm Eisenia fetida. Proceedings of The Annual International Conference on Contaminated Soils Sediments and Water, University of Massachussetts, Amherst, USA. October 20-23, 2008, pp 193.
4. Owojori, O.J., Reinecke, A.J., 2009 Single and joint toxic effects of salinity and copper on the earthworm Eisenia fetida. SETAC Europe 19th Annual meeting, Goteborg, Sweden, May 29-June 4, 2009.
6. Owojori, O.J., Siciliano, S.D., Princz, J., 2010. Can the avoidance behavior of the oribatid mite Oppia nitens be used as a screening tool for contaminated soils?. SETAC North America conference, Portland, Oregon, U.S.A., November 7-11, 2010

Contact: Department of Zoology,Obafemi Awolowo University, Ile-Ife, Nigeria. ,E-mail: gbengaowojori@yahoo.com;