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Onja Razafindratsima, PhD

Visiting Assistant Professor

Address: RITA 201


PhD - Rice University, Texas

MS - University of Antananarivo, Madagascar

Research Interests

  • tropical ecology
  • animal behavior
  • plant ecology
  • conservation biology
  • biodiversity
  • community ecology
  • unctional ecology


Razafindratsima, O.H., Brown, K.A., Johnson, S.E., Wright, P.C. and Dunham, A.E. (in press) Edge effects on components of diversity and above-ground biomass in a tropical rainforest. Journal of Applied Ecology

Razafindratsima, O.H. (2017) Post-dispersal predation and removal of seeds by rodents in the rainforest of Ranomafana, Madagascar. Journal of Tropical Ecology 33:232-236

Razafindratsima, O.H. and Dunham, A.E. (2016) Co-fruiting plant species share similar fruit and seed traits while phylogenetic patterns vary through time. Journal of Ecology104:1789-1798

Razafindratsima, O.H. and Dunham, A.E. (2016). Frugivore bias seed-adult tree associations through nonrandom seed dispersal: a phylogenetic approach. Ecology 97:2094-2102

Wilmé, L., Waeber, P.O., Moutou, F., Gardner, C., Razafindratsima, O.H., Sparks, J., Kull, C.A., Ferguson, B., Lourenço, W.R., Jenkins, P.D., Ramamonjisoa, L., Burney, D.A. and Lowry II, P.P. (2016). A proposal for ethical conduct in research in and on Madagascar. Madagascar Conservation and Development 11:36-39

Razafindratsima, O.H. and Dunham A.E. (2015). Increasing women’s participation in community-based conservation: key to success? Madagascar Conservation and Development 10:45-47.

Razafindratsima, O.H. and Dunham A.E. (2015).Assessing the impacts of nonrandom seed dispersal by multiple frugivore partners on plant recruitment. Ecology 96:24-30. [Featured cover article; also featured in public media, including Rice News, ESA blog and Science Daily]

Razafindratsima, O.H. (2014). Seed dispersal by vertebrates in Madagascar’s forests: review and future directions. Madagascar Conservation and Development 9:90-97.

Martinez B.T. and Razafindratsima, O.H. (2014). Frugivory and seed dispersal patterns by the red-ruffed lemur, Varecia rubra, at a forest restoration site in Masoala National Park, Madagascar. Folia Primatologica 85:228-243.

Razafindratsima, O.H., Jones, TA and Dunham, A.E. (2014). Patterns of movement and seed dispersal by three lemur species. American Journal of Primatology 76:84-96 [Featured cover article].

Dunham, A.E., Maitner, B.S., Razafindratsima, O.H., Simmons, C.M.* and Roy, C.L. (2013). Body size and sexual size dimorphism in primates: influence of climate and net productivity. Journal of Evolutionary Biology 26:2312-2320 [Featured cover article].

Razafindratsima, O.H., Mehtani, S.*, and Dunham, A.E. (2013). Extinctions, traits and phylogenetic community structure: insights from primate assemblages in Madagascar. Ecography 36:47-56.

Razafindratsima, O.H. and Martinez, B.T. (2012).  Seed dispersal by red-ruffed lemur: seed size, viability and potential for germination. Ecotropica 18: 15-26.

Razafindratsima, O.H. and Razafimahatratra, E. (2010). Effect of red-ruffed lemur gut-passage on the germination of rainforest plant species. Lemur News 15:40-43.