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| Mascarene rainforest | |
|---|---|
| Name | Mascarene rainforest |
| Location | Mauritius, Réunion, Rodrigues |
| Biome | Tropical rainforest |
Mascarene rainforest The Mascarene rainforest refers to the montane and lowland tropical woodlands of the Mascarene Islands, centered on Mauritius, Réunion, and Rodrigues. These forests have been shaped by volcanism associated with the Reunion hotspot, maritime trade routes linking Indian Ocean, and colonial histories involving Dutch East India Company, French colonial empire, and British Empire. Surviving fragments host high levels of endemism comparable to other island systems such as the Galápagos Islands, Madagascar, and the Hawaii archipelago.
Mascarene rainforest occurs in altitudinal bands across Réunion's Piton des Neiges and Piton de la Fournaise, Mauritius's central plateau and Black River Gorges National Park, and Rodrigues's remaining uplands such as Grand Montagne. Extent has been reduced by clearance for plantations during the Sugar Revolution and conversion linked to the Indian Ocean slave trade era and later colonial settlement patterns. Biogeographically the ecoregion is often compared and connected to the Madagascar and the Indian Ocean Islands biodiversity hotspot and features links with floristic elements noted by explorers like Alexander von Humboldt and naturalists such as Alfred Russel Wallace and Charles Darwin.
Vegetation includes lowland evergreen wet forest, mid-elevation cloud forest, montane ericaceous thicket, and coastal scrub dominated historically by characteristic genera like Pandanus, Eugenia, Couroupita, and Syzygium. Endemic lineages include species in the genera Tibouchina, Sideroxylon, Pisonia, Aphloia, and the emblematic Trochetia and Dombeya. Many plant assemblages show affinities with Madagascar's eastern lowland forests and with vagile taxa documented by Joseph Dalton Hooker and later catalogued in floras by John Gilbert Baker and institutions such as the Royal Botanic Gardens, Kew. Vegetation structure has been altered by invasive plants such as Lantana camara, Psidium guajava, Chromolaena odorata, and Cinnamomum verum introductions associated with colonial-era trade networks involving the Dutch East India Company and French East India Company.
Faunal assemblages were historically rich in endemic birds, reptiles, invertebrates, and land snails including iconic taxa such as the extinct Dodo, surviving endemic birds like the Réunion harrier and Mauritius kestrel, and lesser-known endemics comparable to Aldabra giant tortoise relatives and Madagascar tenrec analogues. Invertebrate endemism includes unique Oribatida mites, endemic Scarabaeidae beetles, and diverse land snail radiations noted by collectors such as Alphonse Milne-Edwards. Amphibian representation is limited but includes species studied by herpetologists affiliated with institutions like the Muséum national d'Histoire naturelle and Natural History Museum, London. Many vertebrates and invertebrates declined precipitously following introductions of Rattus norvegicus, Felis catus, Sus scrofa, and disease agents linked to global shipping documented in records of the HMS Bounty era and later colonial logs.
Human transformation accelerated after initial landings by sailors of the Portuguese Empire and subsequent settlement by the Dutch Empire, French colonial empire, and British Empire, driven by commodities such as sugarcane tied to plantation economies and labor systems including indentured labor from British India. Land use converted rainforest to sugar plantations, tea estates, and urban areas such as Port Louis and Saint-Denis, Réunion. Colonial-era governance frameworks and treaties like the Treaty of Paris (1763) indirectly influenced land tenure patterns that shaped deforestation trajectories studied by historians of colonialism and economic historians at universities such as University of Oxford and University of Cambridge.
Conservation responses include establishment of protected areas such as Black River Gorges National Park, Réunion National Park, and reserves administered by agencies including the Mauritius Wildlife Foundation and the Conservatoire du littoral. Species recovery programs have involved captive breeding of the Mauritius kestrel and reintroduction efforts for plants coordinated with botanical gardens like Jardin des Plantes, Paris and Royal Botanic Gardens, Kew. Restoration projects use techniques endorsed by conservation NGOs such as IUCN and collaborate with research centers including IRD and universities like University of Mauritius. Invasive species control targets Rattus rattus, Cochlospermum grandiflorum (local invasives), and ungulates modeled on eradication campaigns on islands such as Macquarie Island and Isle of Rum.
The rainforest holds cultural importance in Creole, Franco-Mauritian, and Indo-Mauritian traditions and is reflected in literature, music, and practices conserved by cultural institutions like the National Library of Mauritius and museums such as the Musée d'Histoire Naturelle de La Réunion. Naturalists and explorers including François Guillaume I, Charles Telfair, and later researchers at the Smithsonian Institution documented biodiversity that influenced global debates on biogeography and conservation featured in exhibitions at the Linnean Society of London and publications from the Royal Society. Landscapes have inspired artists and writers connected to the Romantic movement and to contemporary conservation communicators working with UNESCO-sponsored programs and the Convention on Biological Diversity.
Category:Biogeography Category:Island ecosystems