Workshop on "economic evaluation of biomass-oriented systems for fuel", (with one week post-workshop excursion to biomass producing and consuming industries and farmers in Sweden), held at Garpenberg, Sweden, 6-7 June, 1988.

Review team for Olmotonyi forestry training institute diploma curriculum organized by the Ministry of Lands, Natural Resources and Tourism in Moshi Tanzania. August 1989.

Seminar paper on introduction to models as a tool for natural resource management for participants of seminar on soil conservation for DANIDA-funded, Iringa based project  held at the institute of continuing education, SUA, Morogoro, Tanzania, 1989.

Paper on "environmental impact assessment for development projects" presented to participants of a three-month short course for district forest and agricultural officers sponsored by NORAD and conducted at ICE, SUA, Morogoro, May 1992.

Short course on valuing environmental goods: Theoretical underpinnings and applications held at Department of Forest Sciences, Agricultural University of Norway, Ås, Norway, 1993.

Economics and biodiversity paper presented to participants of the 20th Inter-Nordic Course on forestry in developing countries held at the Department of Economics and Natural Resources, The Royal Veterinary and Agricultural University, Copenhagen, Denmark, 23 January - 3 February 1995.

IUFRO XX WORLD CONGRESS on "caring for the forest: research  in a changing world" held at Tampere, Finland, August 6-12 1995.

IUFRO XX WORLD CONGRESS post-congress excursion on "mechanical wood industry and its products" with technical visits to Tampere, Lahti, Mikkeli, Imatra,  Lappeenranta, Kotka and Helsinki, 13-18 August, 1995.

Economics and biodiversity paper presented to participants of the 21st Inter-Nordic course on forestry in developing countries held at the Department of Forest Sciences, Agricultural University of Norway, Ås, Norway, January 1996.

Seminar paper on project planning and appraisal for the sixth short course on "Management of Natural Resources and Sustainable Agriculture (MNRSA)", held at the institute of continuing education (ICE), Sokoine University of Agriculture, Morogoro, Tanzania, 17 March - 7 June 1997.

Seminar paper on project planning and appraisal for the seventh short course on "Management of Natural Resources and Sustainable Agriculture (MNRSA)", held at the institute of continuing education (ICE), Sokoine University of Agriculture, Morogoro, Tanzania, 16 March - 5 June 1998.

SADC International short course on Collaborative Forest Management held at Olmotonyi, Arusha, Tanzania 12 – 30 October, 1998.

Exta-sectoral influences on tropical forests: International Comparisons. CIFOR Research Activity Workshop. Younde Cameroom 5 – 15 April 1997.

Modelling workshop on Miombo woodlands. CIFOR Research Workshop held in Mutare, Zimbabwe, 18 – 22 January 1999.

Virtual teams Workshop for CIFOR  Project Coordinators held at Imire Lodge, Zimbabwe, 22 - 25 March, 2000.

CIFOR Board of Trustees meeting held in Harare at the University of Zimbabwe, 26 - 29 March, 2000.

CIFOR Regional mid - term workshop held at AICC Arusha 9 - 14 October 2000.

The DANCED-DANIDA Workshop on Sustainable Forest Management in Southern Africa, Windhoek, Namibia, 12- 17August, 2001.

Monela G.C., 2003. Scientific forum on the role of research in rural development with a focus on community Based Forest management in Northern Tanzania the case of Babati Duru Haitemba Forest Reserve, Sweden (SIDA) 3rd – 9th May 2003.

Monela, G. C. and Abdallah, J.M. 2005. Tanzania: A Critical Analysis. International Seminar held in  UPPSALA, Sweden June 2005.

International Short course on Research Policy and Management, VLIR Programme held in Leuven Belgium October 2005.

International Workshop on Quality Assurance in Higher Education, held in Germany (Oldenburg, Berlin, Leipzig) 17-29 January 2006.

PhD External Examiner at the Norwegian University of Life Sciences (UMB), 27th – 31st May 2006.

Sixth Global Consortium of Higher Education for Research and Agriculture held in San Jose Costa Rica, Central America 1st to 11th March 2007.