Decrease of deforestation in Protected Areas of Madagascar during the Covid-19 years



Tree canopy density, Tree cover loss, National Park, IUCN conservation category, Forest, Tourism, park managers


Deforestation poses a significant threat to global biodiversity and ecosystem services. This study focuses on estimating the deforestation within Protected Areas (PAs) in Madagascar over a 21-year period from 2001 to 2022. A novel methodology utilizing remote sensing data and specific thresholds of tree canopy density is employed to estimate annual deforestation rates and identify trends and patterns within PAs. The analysis reveals significant deforestation in the PA network over the last decade, particularly in 2014, 2017, 2018, and 2019. Notably, the lowest annual deforestation rates were estimated during the Covid-19 years of 2020 (0.66%), 2021 (0.62%), and the subsequent year in 2022 (0.67%) when considering the entire network of 103 PAs with natural forests from 2013 to 2022.



La déforestation constitue une menace importante pour la biodiversité mondiale et les services écosystémiques. Cette étude se concentre sur l'évaluation de l'efficacité des aires protégées (AP) pour lutter contre la déforestation à Madagascar sur une période de 21 ans, de 2001 à 2022. Une méthodologie novatrice utilisant des données de télédétection et des seuils spécifiques de densité du couvert arboré est employée pour estimer les taux annuels de déforestation et identifier les tendances et les modèles au sein des AP. Au cours de la dernière décennie, l'analyse révèle une déforestation significative dans le réseau des AP au cours de certaines années, notamment en 2014, 2017, 2018 et 2019. En revanche, il est intéressant de noter qu'entre 2013 et 2022, les taux annuels de déforestation les plus bas ont été estimés pendant les années de Covid-19 en 2020 (0,66 %), 2021 (0,62 %) et l'année suivante en 2022 (0,67 %) sur l’ensemble du réseau des 103 AP avec des forêts naturelles.

Author Biography

F. Ollier D. Andrianambinina, Madagascar National Parks


Allnutt, T. F., Asner, G. P., Golden, C. D. and Powell, G. V. N. 2013. Mapping recent deforestation and forest disturbance in northeastern Madagascar. Tropical Conservation Science 6, 1: 1–15. <>

Andrianambinina, F. O. D., Waeber, P. O., Schuurman, D., Lowry II, P. P. and Wilmé, L. 2022. Clarification on protected area management efforts in Madagascar during periods of heightened uncertainty and instability. Madagascar Conservation & Development 17, 1: 25–28. <>

Andrianambinina, F. O. D., Schuurman, D., Rakotoarijaona, M. A., Razanajovy, C. N., Ramparany, H. M., et al. 2023. Boost the resilience of protected areas to shocks by reducing their dependency on tourism. PLoS ONE 18, 4: e0278591. <>

Corson, C. 2017. A history of conservation politics in Madagascar. Madagascar Conservation & Development 12, 1: 49–60. <>

Eklund, J., Blanchet, F. G., Nyman, J., Rocha, R., Virtanen, T. and Cabeza, M. 2016. Contrasting spatial and temporal trends of protected area effectiveness in mitigating deforestation in Madagascar. Biological Conservation 203: 290–297. <>

Estrada, A., Garber, P. A., Gouveia, S., Fernández-Llamazares, Á., Ascensão, F., et al. 2022. Global importance of Indigenous Peoples, their lands, and knowledge systems for saving the world’s primates from extinction. Science Advances 8, 31: eabn2927. <>

Ganzhorn, J. U., Lowry, P. P., Schatz, G. E. and Sommer, S. 2001. The biodiversity of Madagascar: one of the world's hottest hotspots on its way out. Oryx 35, 4: 346–348. <>

Gardner, C.J., Nicoll, M.E., Mbohoahy, T., Oleson, K.L.L., Ratsifandrihamanana, A.N., et al. 2013. Protected areas for conservation and poverty alleviation: experiences from Madagascar. Journal of Applied Ecology 50, 6: 1289–1294. <>

Gardner, C. J., Gabriel, F. U. L., St. John, F. A. V., Davies, Z. G. 2016. Changing livelihoods and protected area management: a case study of charcoal production in south-west Madagascar. Oryx 50, 3: 495–505. <>

Gardner, C. J., Nicoll, M. E., Birkinshaw, C., Harris, A., Lewis, R. E., et al. 2018. The rapid expansion of Madagascar's protected area system. Biological Conservation 220: 29–36. <>

GFW (Global Forest Watch). 2022. Tree cover loss. Available online <>

Gorenflo, L. J., Corson, C., Chomitz, K. M., Harper, G., Honzák, M. and Özler, B. 2011. Exploring the association between people and deforestation in Madagascar. In Human Population: Its Influences on Biological Diversity, Ecological Studies 214. R. P. Cincotta and L. J. Gorenflo (eds.), pp 197–221. Springer, Berlin, Heidelberg. <>

Harper, G. J., Steininger, M. K., Tucker, C. J., Juhn, D. and Hawkins, F. 2007. Fifty years of deforestation and forest fragmentation in Madagascar. Environmental Conservation 34, 4: 1–9. <>

Hending, D., Holderied, M., McCabe, G. and Cotton, S. 2022. Effects of future climate change on the forests of Madagascar. Ecosphere 13, 4: e4017. <>

Hudson, M., Andrianandrasana, H., Lewis, R., Gerrie, R., Concannon, L. 2018. Unprecedented rates of deforestation in Menabe Antimena: Can we halt this catastrophic damage? Available online <>

Jones, J. P. G., Ratsimbazafy, J., Ratsifandrihamanana, A. N., Watson, J. E. M., Andrianandrasana, H. T., et al. 2019. Madagascar: Crime threatens biodiversity. Science 363: 825. <>

Llopis, J. C., Harimalala, P. C., Bär, R., Heinimann, A., Rabemananjara, Z. H., Zaehringer, J. G. 2019. Effects of protected area establishment and cash crop price dynamics on land use transitions 1990–2017 in north-eastern Madagascar. Journal of Land Use Science 14, 1: 52–80. <>

Mayaux, P., Pekel, J. F., Desclée, B., Donnay, F., Lupi, A., et al. 2013. State and evolution of the African rainforests between 1990 and 2010. Philosophical Transactions of the Royal Society B: Biological Sciences 368, 1625: 20120300. <>

Moat, J. and Smith, P. 2007 Atlas of the Vegetation of Madagascar, Atlas de la Végétation de Madagascar. Royal Botanic Gardens, Kew Publishing). Available online <>

Rabesahala Horning, N. 2012. Debunking three myths about Madagascar’s deforestation. Madagascar Conservation & Development 7, 3: 116–119. <>

Rafanoharana, S. C., Andrianambinina, F. O. D., Rasamuel, H. A., Rakotoarijaona, M. A., Ganzhorn, J. U., et al. 2021. Exemplifying deforestation processes in four protected areas in Madagascar. Forests 12, 9: 1143. <

Rafanoharana, S.C., Andrianambinina, F.O.D., Rasamuel, H.A., Waeber, P.O., Wilmé, L., Ganzhorn, J.U. 2023a. Projecting forest cover in Madagascar’s protected areas to 2050 and its implications for lemur conservation. Oryx. <>

Rafanoharana, S. C., Andrianambinina, F. O. D., Rasamuel, H. A., Waeber, P. O., Ganzhorn, J. U. and Wilmé, L. 2023b. Tree Canopy Density thresholds for accurate forest cover estimation in protected areas of Madagascar. Environmental Research Communications 5, 7: 071003. <>; Supplementary Material at <>

Ralimanana, H., Perrigo, A. L., Smith, R. J., Borrell, J. S., Faurby, S. et al. 2022 Madagascar’s extraordinary biodiversity: Threats and opportunities. Science 378: eadf1466 <>

Randrianja, S. 2012. Madagascar, le coup d’État de mars 2009. Éditions Karthala, Paris.

Turubanova, S., Potapov, P., Hansen, M. C., Li, X., Tyukavina, A., et al. 2023. Tree canopy extent and height change in Europe, 2001–2021, quantified using Landsat data archive. Remote Sensing of Environment 298: 113797. <>

Vieilledent, G., Grinand, C., Pedrono, M., Rabetrano, T., Rakotoarijaona, J.-R., et al. 2016. Deforestation process in the dry forests of the Menabe region, western Madagascar – Mission report. Unpublished report BioSceneMada. Available online <>

Vieilledent, G., Grinand, C., Rakotomalala, F. A., Ranaivosoa, R., Rakotoarijaona, J. R., et al. 2018. Combining global tree cover loss data with historical national forest-cover maps to look at six decades of deforestation and forest fragmentation in Madagascar. Biological Conservation 222: 189–197 <>

Waeber, P. O., Wilmé, L., Ramamonjisoa, B., Garcia, C., Rakotomalala, D., et al. 2015. Dry forests in Madagascar, neglected and under pressure. International Forestry Review 17, S2: 127–148. <>

Waeber, P. O., Wilmé, L., Mercier, J.-R., Camara, C. and Lowry II, P. P. 2016. How effective have thirty years of internationally driven conservation and development efforts been in Madagascar? PLoS ONE 11, 8: e0161115. <>

Waeber, P. O., Rafanoharana, S., Rasamuel, H. A. and Wilmé, L. 2020. Parks and reserves in Madagascar: Managing biodiversity for a sustainable uture. In: Protected Areas, National Parks and Sustainable Future. A. N. Bakar and M. N. Suratman (eds.), pp 89–108. IntechOpen, London. <>

Zinner, D., Wygoda, C., Razafimanantsoa, L., Rasoloarison, R., Andrianandrasana, H. T., et al. 2014. Analysis of deforestation patterns in the central Menabe, Madagascar, between 1973 and 2010. Regional Environmental Change 14: 157–166. <>

Near the park entrance of Tsimanampesotse National Park


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