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Technical University of Munich

Prof. Dr. Onyekwelu, Jonathan

Guest Scientist

 

Contact
jonathan.onyekwelu[at]tum.com

Research Interests

  • Traditional forest conservation methods
  • Biomass production and carbon stock accumulation of tropical forests
  • Tropical silviculture and forest management (natural and artificial (forest plantation)
  • Forest Biodiversity Conservation (indigenous forests, natural forests, forest plantations, cocoa-based agroforests, urban forests)
  • Forest Ecosystem Restoration
  • Domestication of Forest fruit tree species

CV

2019 - 2019DAAD-guest Professor, Forest Silviculture and Management, Technical University of Munich, Germany
2016 - 2016DAAD-guest Professor, Forest Silviculture and Management, Technical University of Munich, Germany
since 2012Professor, Forestry and Wood Technology, Federal University of Technology, Akure, Nigeria
1992 - 2012Researcher and Lecturer, Federal University of Technology, Akure, Nigeria 
1998 - 2001PhD, Forest Silviculture and Management, Technical University of Munich, Germany
1993 - 1995M.Sc. Forest Management, Federal University of Technology, Akure, Nigeria
1986 - 1991B.Sc., Forestry and Wood Technology, Federal University of Technology, Akure, Nigeria

Publications

  • Onyekwelu, J.C., Agbelade, A.D., Stimm, B. and Mosandl, R. (2024). Role of sacred groves in southwestern Nigeria in biodiversity conservation, biomass and carbon storage. Environmental Monitoring and Assessment (2024) 196:269, https://doi.org/10.1007/s10661-024-12407-6
  • Okunlola, M.I. Onyekwelu, J.C., Oluwajuwon, T.V. Olasuyi1, K.E., Ojo, D.O. and Israel, R. (2023). Marketing of non‑timber forest products in Nigeria: a case of Akure metropolis. Environment, Development and Sustainability. doi.org/10.1007/s10668-023-04208-7
  • Onyekwelu, J.C., Agbelade, A.D., Tolorunju, M.S., Lawal, A., Stimm, B. and Mosandl, R. (2022) Conservation potentials, tree species diversity, distribution and structure of sacred groves in south-western Nigeria. Journal of Tropical Forest Science, 34(3): 333–345. doi.org/10.26525/jtfs2022.34.3.333
  • Adeyanju, S.O., Bulkan, J., Onyekwelu, J.C., Peterson St-Laurent, G., Kozak, R., Sunderland, T., and Stimm, B. (2022). Drivers of Biodiversity Conservation in Sacred Groves: A Comparative Study of Three Sacred Groves in Southwest Nigeria. International Journal of the Commons, 16(1), pp. 94–107. DOI: doi.org/10.5334/ ijc.1143
  • Agbelade, A.D. and Onyekwelu, J.C., John, A.A. Adedayo, J. and Alabi, T. (2022). Assessing the conservation status, biodiversity potentials and economic contribution of urban tree Ecosystems in Nigerian Cities. Urban Ecosystems 25:165–178, https://doi.org/10.1007/s11252-021-01137-z
  • Esperon-Rodriguez, M. Rymer, P.D, Power, S.A., Barton, D.N., Cariñanos, P., Dobbs, C., Eleuterio, A.A., Escobedo, F.J., Hauer, R., Hermy, M., Jahani, A., Onyekwelu, J.C., Östberg, J., Pataki, D., Randrup, T.B., Rasmussen. T., Roman, L.A., Russo, A., Shackleton, C., Solfjeld, I., van Doorn, N.S., Wells, M.J., Wiström, B., Yan, P., Yang, J., and Tjoelker, M.G. (2022). Assessing climate risk to support urban forests in a changing climate. Plants, People, Planet, 4(3), 201–213. doi.org/10.1002/ppp3.10240
  • Onyekwelu, J.C., Lawal, A., Mosandl, R.,Stimm, B. and Agbelade, A.D. (2021). Understory species diversity, regeneration and recruitment potential of sacred groves in south west Nigeria. Tropical Ecology (2021), 62:427–442. https://doi.org/10.1007/s42965-021-00157-2
  • Iwuoha, S.E., Seim, W. and Onyekwelu, J.C. (2021). Mechanical properties of Gmelina arborea for engineering design.Construction and Building Materials 288 (2021), 15pp.  doi.org/10.1016/j.conbuildmat.2021.123123.
  • Onyekwelu, J.C. (2021). Can the fear of the gods sustain biodiversity conservation in sacred groves? Academia Letters, Article 635. https://doi.org/10.20935/AL635, 11pp
  • Onyekwelu, J.C. (2020). Sustainable management of tropical plantation forests. In: Blaser, J. and Hardcastle, P.D. (Eds), Achieving sustainable management of tropical forests. Burleigh Dodds Science Publishing, Cambridge, UK. http://dx.doi.org/10.19103/AS.2020.0074.40; pp 551 - 594
  • Agbelade, A.D. and Onyekwelu, J.C. (2020). Tree species diversity, volume yield, biomass and carbon sequestration in urban forests in two Nigerian cities. Urban Ecosystem, 23:957–970. doi.org/10.1007/s11252-020-00994-4
  • Agbelade, A.D., Onyekwelu, J.C. and Oyun, M.B. (2017). Tree Species Richness, Diversity, and Vegetation Index for Federal Capital Territory, Abuja, Nigeria. International Journal of Forestry Research, Volume 2017, 12pp. https://doi.org/10.1155/2017/4549756
  • Onyekwelu. J.C. and Olabiwonnu, A.A. (2016). Can forest plantations harbour biodiversity similar to natural forest ecosystems over time? International Journal of Biodiversity Science, Ecosystem Services & Management, 12 (1–2): 108–115. dx.doi.org/10.1080/21513732.2016.1162199
  • Onyekwelu, J.C., Oyewale, O., Stimm, B. and Mosandl, R. (2015). Antioxidant, nutritional and anti-nutritional composition of Garcinia kola and Chrysophyllum albidum from rainforest ecosystem of Ondo State, Nigeria. Journal of Forestry Research, 26:417-424. DOI: 10.1007/s11676-015-0068-2
  • Onyekwelu, J.C. and Olusola, J.A. (2014). Role of sacred grove in in-situ biodiversity conservation in rainforest zone of south-western Nigeria. Journal of tropical forest science, 26(1): 5–15. https://jtfs.frim.gov.my/jtfs/article/view/237
  • Onyekwelu, J.C., Olusola, J.A., Stimm, B., Mosandl, R. and Agbelade, D.A. (2014). Farm-level tree growth characteristics, fruit phenotypic variation and market potential assessment of three socioeconomically important forest fruit tree species. Forests, Trees and Livelihoods; 24 (1): 27–42, dx.doi.org/10.1080/14728028.2014.942386
  • Onyekwelu, J.C., El Kateb, H. and Felbermeier, B., (2014). Status of soil under different forest types in south-western Nigeria. Ghana Journal of Forestry, 30 (1): 1 – 15
  • Onyekwelu, J. C.; Stimm, B., 2014: Conservation and socio-economic importance of some agroforestry fruit tree species: farmers’ participation, tree growth characteristics and market assessment. International Forestry Review, 16, 5, 65.
  • Knoke, T., Calvas, B., Moreno, S.O., Onyekwelu, J.C. and Griess, V.C. (2013). Food production and climate protection – what abandoned lands can do to preserve natural forests. Global Environmental Change 23: 1064–1072. http://dx.doi.org/10.1016/j.gloenvcha.2013.07.004
  • Onyekwelu, J.C. (2012). Soil microbial biomass and population in response to seasonal variation and age in Gmelina arborea plantations. Journal of Forestry Research, 23: 253 – 260 . DOI 10.1007/s11676-012-0251-7

  • Fuwape, J.A. and Onyekwelu, J.C. (2011). Urban Forest Development in West Africa: Benefits and Challenges. Journal of Biodiversity and Ecological Sciences, 1(1): 77 – 94.  http://jbes.ir/wp-content/docs/vol1/1/7.pdf

  • Onyekwelu, J.C., Stimm, B. and Evans, J. (2011). Plantation forestry. In: Silviculture in the Tropics (Günter, S. Weber, M., Stimm, B. and Mosandl, R., Eds). vol 8. Springer, Berlin, Heidelberg., pp. 399 – 454. https://doi.org/10.1007/978-3-642-19986-8_27

  • Onyekwelu, J.C., Mosandl, R. and Stimm, B (2008). Tree species diversity and soil status of primary and degraded tropical rainforest ecosystems in South-Western Nigeria. Journal of TropicalForest Science, 20(3):193–204. https://www.jstor.org/stable/23616500   

  • Onyekwelu, J.C. (2007). Growth, biomass yield and biomass functions for plantation-grown Nauclea diderrichii in humid tropical rainforest zone of Nigeria. Bioresource Technology, 98: 2679 – 2687. doi:10.1016/j.biortech.2006.09.023
  • Onyekwelu, J.C., Mosandl, R. and Stimm, B (2006). Productivity, site evaluation and state of nutrition of Gmelina arborea plantations in tropical rainforest zone in South-western Nigeria. Forest Ecology and Management, 229: 214–227. doi:10.1016/j.foreco.2006.04.002

  • Onyekwelu, J.C. (2005). Silviculture, productivity and prospects of afforestation with Gmelina arborea (ROXB) in Nigeria. Nigerian Journal of Forestry, 35(1): 62 – 75 

  • Onyekwelu, J.C. (2004). Above-ground biomass production and biomass equations for even-aged Gmelina arborea (ROXB) plantations in south-western Nigeria. Biomass & Bioenergy, 26/1: 39 – 46. doi:10.1016/S0961-9534(03)00100-4
  • Onyekwelu, J.C., Biber, P. and Stimm, B. (2003). Thinning Scenarios for Gmelina arborea plantations in south-western Nigeria using density management diagrams. Journal of Food  Agric. & Environment,  1 (2): 320 – 325. www.wflpublisher.com/Abstract/387

  • Fuwape, J.A., Onyekwelu, J.C. and Adekunle, V.A.J. (2001). Biomass equations and estimation for Gmelina arborea and Nauclea diderrichii stands in Akure forest reserve. Biomass & Bioenergy, 21: 401 – 405. https://doi.org/10.1016/S0961-9534(01)00036-8

  • Onyekwelu, J.C. and Fuwape, J.A. (1998). Site index equation for Gmelina arborea pulpwood in Oluwa Forest Reserve, Nigeria. Journal of Tropical Forest Science; 10(3): 337-345.

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