Climate change and Lake functioning

The dynamics of primary productivity in lakes depends very much on the lake's functioning. Warmers waters cultivate for increased thermal stability and stratification; thereby making t hard for nutrients cycling to happen. My interest is to study how climate change is and will affect lakes functioning both in terms of hydrodynamics and primary productivity which had a domineering impact on fisheries production

Marine ecology

My main interest is to study how different ecosystems, that is mangroves, seagrasses and coral reefs, are connected to each other through fish movements and carbon transport. The three ecosystems are very important at all the life stages of marine fishes. They conservation and protection is therefore important for continued supply of fish and other ecosystem goods and services. I am also interested in how climate change or continued land degradation and habitat fragmentation will affect the provision of ecosystem goods and services from these ecosystems.


YearPositionInstitution Name
2015Principal Researcher Tanzania Fisheries Research Insitute(TAFIRI)
2012Centre DirectorTanzania Fisheries Research Insitute(TAFIRI)
2003ResearcherTanzania Fisheries Research Insitute(TAFIRI)
2002Limnologist/ChemistCLIMLAKE/CLIMFISH Projects
2017AWARDCAS-PIFI Research Fellow, NIGLAS, PR China
2013AWARDVisiting Researcher, NIGLAS, PR China
2012AWARDWIOMSA Travel Grant
2006AWARDWOTRO Scholarship
2012PhD Marine EcologyRadbond Universiteit NijimegenNethlandsPhD
2005M.Sc.(Zoology) University Of Dar Es SalaamTanzaniaMasters Degree
2000B.Sc.(Marine Biology and Chemistry)University of Dar Es SalaamTanzaniaBachelor Degree

2018Gao Q, Chen S, Kimirei IA, Zhang L, Mgana H, Mziray P, Wang Z, Yu C, Shen Q (2018) Wet deposition of atmospheric nitrogen contributes to nitrogen loading in the surface waters of Lake Tanganyika, East Africa: a case study of the Kigoma region. Environmental Science and Pollution Research
2016Semba M, Kimirei I, Kyewalyanga M, Peter N, Brendonck L, Somers B. (2016) The decline in phytoplankton biomass and prawn catches in the Rufiji-Mafia Channel, Tanzania. WIO Journal of Marine Science 15: 15-29
2016Mziray P and Kimirei IA (2016) Bioaccumulation of heavy metals in marine fishes (Siganus sutor, Lethrinus harak, and Rastrelliger kanagurta) from Dar es Salaam Tanzania. Regional Studies in Marine Science 7:72-80. doi:10.1016/j.rsma.2016.05.014
2015Kimirei IA, Nagelkerken I, Slooter N, Gonzalez ET, Huijbers CM, Mgaya YD, Rypel AL (2015) Demography of fish populations reveals new challenges in1 appraising juvenile habitat values. Marine Ecology Progress Series 518:225-237
2014Igulu MM, Nagelkerken I, Dorenbosch M, Grol MG, Harborne AR, Kimirei IA, Mumby PJ, Olds AD, Mgaya YD (2014) Mangrove Habitat Use by Juvenile Reef Fish: Meta-Analysis Reveals that Tidal Regime Matters More than Biogeographic Region. PloS one 9:e114715
2014Loiselle S., Cozar A., Adgo E., Ballatore T., Chavula G., Descy J.-P, Harper D., Kansiime F., Kimirei I.A., Langenberg V., Ma R., Sarmento H., Odada, E. (2014) Decadal Trends and Common Dynamics of the Bio-Optical and Thermal Characteristics of the African Great Lakes. PLoS ONE 9(4): e93656. doi:10.
2013Kimirei, I. A., Nagelkerken, I., Trommelen, M., Blankers, P., Hoytema, N., Hoeijmakers, D., Huijbers, C. M., Mgaya, Y. D., Rypel, A. L. (2013). What Drives Ontogenetic Niche Shifts of Fishes in Coral Reef Ecosystems? Ecosystems 16: 783-796. DOI: 10.1007/s10021-013-9645-4
2013Kimirei I.A., Nagelkerken I., Mgaya Y.D., Huijbers, C.M. (2013). The Mangrove Nursery Paradigm Revisited: Otolith Stable Isotopes Support Nursery-to-Reef Movements by Indo- Pacific Fishes. PLoS ONE 8(6): e66320. doi:10.1371/journal.pone.0066320
2012Ngupula, G. W., Ezekiel, C. N., Kimirei, I. A., Mboni, E., and Kashindye, B. (2012) Physical and chemical characteristics of the Tanzanian inshore and offshore waters of Lake Victoria in 2005-2008. African Journal of Aquatic Science 37(3):339-345
2011Kimirei, I. A.; Nagelkerken, I., Griffioen, B., Wagner, C., and Mgaya, Y. D. (2011). Ontogenetic habitat use by mangrove/seagrass-associated coral reef fishes shows flexibility in time and space. Estuarine, coast and Shelf Science 92:47-58
2010Descy, J.-P., Tarbe, A.-L., Stenuite, S., Pirlot, S., Stimart, J., Vanderheyden, J., Leporcq, B., Stoyneva, M.P., Kimirei, I. A., Sinyinza, and D., Plisnier, P.-D. (2010). Drivers of phytoplankton diversity in Lake Tanganyika. Hydrobiologia 653:29-44
2009Plisnier, P.-D., Mgana, H., Kimirei, I. A., Chande, A. I, Makasa, L., Chimanga, J., Zulu, F., Cocquyt, C., Horion, S., Bergamino, N., Naithani, J., Deleersnijder, E., Andre´, L., Descy, J.-P., Cornet, Y., (2009). Limnological variability and pelagic fish abundance (Stolothrissa tanganicae and Lates stappersii) in Lake Tanganyika. Hydrobiologia 625: 117-134
2008Kimirei, I. A., Mgaya, Y. D., and Chande, A. I. (2008) Changes in species composition and abundance of commercially important pelagic fish species in Kigoma area, Lake Tanganyika, Tanzania. Aquatic Ecosystem Health and Management 11:29-35
2007Kimirei, I. A. and Mgaya, Y. D. (2007) Influence of environmental factors on seasonal changes in clupeid catches in the Kigoma area of Lake Tanganyika. African Journal of Aquatic Sciences 32: 291-298
2006Kimirei, I. A. and Mgaya, Y. D. (2006) Assessment of Lates stappersii (Centropomidae) stock in lift-net fishery in Lake Tanganyika, Kigoma, Tanzania.Tanzania Journal of Science 32:1-12
2005Chitamwebwa, D. B. R. and Kimirei, I. A. (2005). Present fish catch trends at Kigoma, Tanzania. Verhandlungen der Internationalen Vereinigung Limnologie 29:373-376.
2005J.-P. Descy, M.-A. Hardy, S. Stenuite, S. Pirlot, B. Leporcq, I. A. Kimirei, B. Sekadende, S.R. Mwaitega and D. Sinyenza (2005). Phytoplankton pigments and community composition in Lake Tanganyika. Freshwater Biology 50:668-684.
2005Alleman, L. Y., Cardinal, D., Cocquyt, C. C., Plisnier, P.-D., Descy, J.-P, Kimirei, I. A., Sinyenza, D., and Andre, L. (2005). Silicon isotopic fractionation in Lake Tanganyika and its main tributaries. Journal of Great Lakes Research 31:509-519
2003Alleman, L.Y., Cardinal, D., Kimirei, I. A., Andre, L. (2003). Distribution and implication of silicon isotopic composition in marine and freshwaters. Geochimica Et Cosmochimica Acta 67, A12-A12.
2002Descy, J.-P., P.-D. Plisnier, L. Alleman, L. Andre, D. Chitamwebwa, C. Cocquyt, E. Deleersnijder, I. A. Kimirei, J. Naithani, H. Phiri, D. Sinyenza & W. Vyverman (2002). Climate variability as recorded in Lake Tanganyika (CLIMLAKE). Bulletin of the International Decade for East African Lakes 3-5.
2015Chen, S. S. and Kimirei, I. A. (Eds.) (2015) Demonstration Research on Comprehensive Water Quality Monitoring in the Lake Tanganyika Basin. CSTEC and NIGLAS, Nanjing, China. 97p
Book Chapters
2017Kimirei IA, Semba M, Mwakosya C, Mgaya YD, Mahongo SB (2017) Environmental Changes in the Tanzanian Part of Lake Victoria. In: Mgaya YD, Mahongo SB (eds) Lake Victoria Fisheries Resources : Research and Management in Tanzania. Springer International Publishing, Cham
2017Mgaya YD, Limbu SM, Lugomela CV, Kimirei IA, Kayanda RJ, Ngupula GW (2017) Biodiversity Indicators: Plankton and Macroinvertebrates in Lake Victoria, Selected Satellite Lakes and Rivers. In: Mgaya YD, Mahongo SB (eds) Lake Victoria Fisheries Resources : Research and Management in Tanzania. Springer International Publishing, Cham
2016Kimirei IA, Igulu MM, Semba M, Lugendo BR. 2016. Small Estuarine and Non-Estuarine Mangrove Ecosystems of Tanzania: Overlooked Coastal Habitats? In: Diop S, Scheren P, Ferdinand Machiwa J editors. Estuaries: A Lifeline of Ecosystem Services in the Western Indian Ocean. Cham: Springer International Publishing. p. 209-226.

12015Prisca Mziray(primary supervisor Charles Lugomela; co-supervisors Ismael Kimirei, Dennis Trolle)
12013Gonzalez, E.TDo non-reef shallow habitats function as true recruitment areas for commercially important coral reef fish species in Tanzania? Animal Ecology and Ecophysiology, Radboud University Nijmegen, The Netherlands.
22010Van Hoytema, N.ROntogenetic diet shifts as a possible reason for migration from nursery habitats to the coral reef by two Indo-Pacific fish species: Lutjanus fulviflamma and Siganus sutor in Tanzania. MSc Internship report, 35 pp., Radboud University Nijmegen
32010Hoeijmakers, D. Does spatial distribution of larger potential food items influence ontogenetic habitat migration of four reef fish species in Tanzania? Animal Ecology and Ecophysiology, Radboud University Nijmegen, The Netherlands
42009Wagner, C. Habitat utilization by four coral reef fish species: Ontogenetic habitat shift of generalist. Animal Ecology and Ecophysiology, Radboud University Nijmegen, The Netherlands
52009Blankers, P. Ontogenetic dietary changes as a potential trigger for cross-habitat movements by Tanzanian fish species. Animal Ecology and Ecophysiology, Radboud University Nijmegen, The Netherlands
62008Griffioen, B. Habitat utilisation of four economically important fishes: Lethrinus harak, L. lentjan, Lutjanus fulviflamma and Siganus sutor in Tanzania. Animal Ecology and Ecophysiology, Radboud University Nijmegen, The Netherlands
72008 Trommelen, M. Sexual maturation as a potential trigger for ontogenetic habitat shifts of four coral reef fish species in Tanzania. Animal Ecology and Ecophysiology, Radboud University Nijmegen, The Netherlands
82008Slooter, N. Recruitment patterns of four coral reef fish species in Tanzanian coastal ecosystems. Animal Ecology and Ecophysiology, Radboud University Nijmegen, The Netherlands

Position:Centre Director
Address:P.O. Box 90, Kigoma