Toponyms for centers of endemism in Madagascar
DOI:
https://doi.org/10.4314/mcd.v7i1.6Keywords:
refugia, micro-endemism, paleoclimate, dispersion, watershed, microendémisme, refuges, paléoclimats, bassin versant, Madagascar, fleuve, rivière, river, drainage, refugeAbstract
A biogeographical model was proposed in 2006 to explain the centers of endemism and the importance of riparian forest of some watersheds as refuges or dispersal corridors during paleoclimatic oscillations. Here, we consider these geographical features highlighting their biological and socio-cultural importance. We explain the etymology or eponymy of the major rivers of the retreat-dispersal watersheds, i.e., the drainage basins of Bemarivo, Antainambalana, Mangoro, Manampatrana, Mananara South, Mandrare, Onilahy, Mangoky, Tsiribihina, Betsiboka, Maevarano, Sambirano, and Mahavavy North. We propose a toponymy for each of the 15 centers of endemism and highlight their peculiarities. We named the centers of endemism of Vohimarina, Masoala, Analanjirofo, Tanala, Manombo, Anosy, Ranopiso, Karimbola, Mikea, Menabe, Melaky, Sofia, Ampasindava, Ankify, and Ankarana. We illustrate each center of endemism with a flagship species and report on its natural and cultural histories, and conservation.
RÉSUMÉ
Un modèle biogéographique a été proposé en 2006 pour expliquer les centres d’endémisme de la biodiversité et l’importance des ripisylves de certains bassins versants en tant que refuges ou couloirs de dispersion au cours des oscillations paléoclimatiques. Ici, nous considérons ces dispositifs géographiques en soulignant leur importance biologique et socioculturelle. Dans un premier temps, nous expliquons la toponymie ou l’éponymie des grands fleuves des bassins refuges et de dispersion, à savoir les bassins de la Bemarivo, de l’Antainambalana, du Mangoro, de la Manampatrana, de la Mananara du Sud, du Mandrare, de l’Onilahy, du Mangoky, de la Tsiribihina, de la Betsiboka, de la Maevarano, du Sambirano et de la Mahavavy du Nord. Puis nous proposons une toponymie pour chacun des 17 centres et sous-centres d’endémisme en justifiant leurs particularités. Nous retenons ainsi les centres d’endémisme de Vohimarina, de l’Atsinanana (dont Masoala et Analanjirofo), Tanala, de Manombo, de l’Anosy, d’Ala maika (dont Ranopiso, Karimbola et Mikea), du Menabe, du Melaky, de la Sofia, d’Ampasindava, d’Ankify et de l’Ankarana. Nous illustrons chacun des centres d’endémisme avec une espèce symbolique et rapportons des aspects de son histoire naturelle et culturelle ainsi que de sa conservation.
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