Naina R. Rabemananjara
Bild von Misa Rasolozaka

PhD student

Project:  Short to long-term impacts of forest fires on lemur communities and their recolonization dynamics in burnt forest sites, case of Ankarafantsika National Park, Madagascar

Tropical forests, covering only 6% of the Earth's surface, harbor over 80% of terrestrial biodiversity but face growing threats from human activities, particularly fire-driven agricultural expansion. This is especially critical in Madagascar, where escalating landscape degradation endangers its unique, endemic species. Fires in the drier western regions pose a major risk to ecosystems, including lemurs, which play key roles in ecosystem functions and indicate habitat health. However, little is known about lemurs’ resilience to these increasingly widespread fires. To address this, I am conducting my study in Ankarafantsika National Park (ANP), the largest protected dry forest in northwestern Madagascar, home to eight lemur species: Propithecus coquereli, Eulemur fulvus, Eulemur mongoz, Lepilemur edwardsi, Avahi occidentalis, Cheirogaleus medius, Microcebus murinus, and Microcebus ravelobensis. My project aims to understand how past fires influence lemur abundance and distribution in the dry deciduous forest of northwestern Madagascar (ANP), shedding light on their fire resilience, specifically, their natural capacity and timeframe for recolonizing burned areas.

Professional and scientific career

  • September 2022 – present: Doctoral candidate, Short- to long-term impacts of forest fires on lemur communities and their recolonization dynamics in burned forest sites, Ankarafantsika National Park, Madagascar, Institute of Zoology, Veterinary Medicine Hannover.
  • September 2021 – May 2022: Biologist & Research Assistant, Using comparative phylogeographic and ecological models to reveal interacting evolutionary processes in contrasting clades: the example of mouse lemurs (Microcebus spp.), sportive lemurs (Lepilemur spp.), and woolly lemurs (Avahi spp.), Institute of Zoology, Veterinary Medicine Hannover.
  • November 2017 – January 2019: Project Leader, Ecological needs of the Endangered Northern Giant Mouse Lemur (Mirza zaza) in Sahamalaza-Iles Radama National Park, Zoological Society of London.
  • September 2015 – August 2016: Research Assistant, Social behavior and vocal repertoire of the Critically Endangered Lepilemur sahamalazensis in Sahamalaza-Iles Radama National Park, University of Bristol, UK.
  • 2015: Diplôme d’Études Approfondies (equivalent to MSc) in Primatology, University of Antananarivo, Madagascar.
  • January – May 2014: Project Leader, Survey on the density of Propithecus coronatus in the Menabe Region, Earthwatch Institute.
  • 2011: Maîtrise (equivalent to first year of MSc) in Biological Anthropology, University of Antananarivo, Madagascar
  • 2009: Licence (equivalent to BSc) in Palaeontology and Biological Anthropology, University of Antananarivo, Madagascar

PUBLICATIONS

  • Mandl, I., Rabemananjara, N.R., Schwitzer, C., & Holderied, M. (2023). Measuring the impact of forest edges on the highly arboreal Sahamalaza sportive lemur (Lepilemur sahamalazensis) in north-western Madagascar. International Journal of Primatology, 44(3), 458–481. https://doi.org/10.1007/s10764-022-00333-8.
  • Schüßler, D., Rabemananjara, N.R., Radriarimanga, T., Rafamantanantsoa, S.M., Randimbiharinirina, R.D., Radespiel, U., & Hending, D. (2023). Habitat and ecological niche characteristics of the elusive Hairy-eared Dwarf Lemur (Allocebus trichotis) with updated occurrence and geographic range. American Journal of Primatology. https://doi.org/10.1002/ajp.23473.
  • Mandl, I., Rabemananjara, N. R., Schwitzer, C., & Wilmet, L. (2020). Updated population density estimation and distribution range of the Critically Endangered Sahamalaza sportive lemur, Lepilemur sahamalazensis. Lemur News, 22.
  • Schüßler, D., Rabemananjara, N. R., & Ratsimbazafy, J. H. (2021). The potential distribution of the giant mouse lemurs (Mirza coquereli, Mirza zaza) with implications for their conservation. Lemur News, 23, 44–48.
  • Mandl, I., Rabemananjara, N.R., Schwitzer, C., & Holderied, M. (2018). Evaluating the use of vocalization playbacks for lure counts of the rare nocturnal sportive lemur Lepilemur sahamalazensis. Primate Conservation, 32, 109–122.
  • Mandl, I., Rabemananjara, N.R., Rakotomalala, A. N., Sorlin, M., Holderied, M. W., & Schwitzer, C. (2017). A case of mobbing observed in two species of nocturnal lemur, Mirza zaza and Lepilemur sahamalazensis, in north-west Madagascar. Lemur News, 20, 6–7.

Conference Participation

  • February 2025: Post-fire recolonization of dry deciduous forests by lemurs in northwestern Madagascar- Oral presentation, European Conference for Tropical Ecology, Amsterdam, Netherland
  • August 2018: Ecological needs of Mirza zaza in a fragmented forest, Ankarafa, Sahamalaza-Iles Radama National Park – Oral presentation, International Primatological Society, Nairobi, Keny
  • August 2018: Ecological needs of Mirza zaza in a fragmented forest, Ankarafa, Sahamalaza-Iles Radama National Park – Oral presentation, International Primatological Society, Nairobi, Keny
  • December 2017: Estimating population density of Mirza zaza, Ankarafa, Sahamalaza-Iles Radama National Park – Oral presentation, Malagasy Primatological Society, Tamatave, Madagascar.

Awards and grants

  • 2025: Travel Grant, SOS lemur to attend the International Primatological Society Congress, Antananarivo, Madagascar.
  • 2025: Travel Grant, GTOE, European Conference for Tropical Ecology, in Amsterdam, Netherlands.
  • 2018: Travel Grant, Houston Zoo – Attended the International Primatological Society Congress, Nairobi, Kenya.
  • 2016: EDGE Fellowship Program grant, Zoological Society of London.
  • 2013: Shulman Earthwatch Award grants for early career scientist, Earthwatch Institute.