Rivière Nosivolo et affluents

Rivière Nosivolo et affluents (District Mahanoro et Marolambo)
Rivière Nosivolo et affluents (District Mahanoro et Marolambo)
Rivière Nosivolo et affluents (District Mahanoro et Marolambo)
Rivière Nosivolo et affluents (District Mahanoro et Marolambo)
Site Ramsar ‘Rivière Nosivolo et affluents’
Site Ramsar ‘Rivière Nosivolo et affluents’
Grenier familial à Nosivolo
‘Jiro’ à Nosivolo
Maison traditionnelle à Nosivolo avec séchage de Raphia
Anas erythrorhyncha et Dendrocygna viduata
Destruction des marécages (forêt de raphia) par l’orpaillage et la construction de la rizière
Eau rapide et rocailleux de la rivière
Eau calme
Paysage de la rivière Nosivolo avec des terrains de culture vivrière sur  le bassin versant

Rivière Nosivolo et affluents

  • Country: 
  • Site number: 
  • Area: 
    358,511 ha
  • Designation date: 
  • Coordinates: 
    20°06'S 47°58'E
Materials presented on this website, particularly maps and territorial information, are as-is and as-available based on available data and do not imply the expression of any opinion whatsoever on the part of the Secretariat of the Ramsar Convention concerning the legal status of any country, territory, city or area, or of its authorities, or concerning the delimitation of its frontiers or boundaries.


The Site comprises a 130-kilometre stretch of the Nosivolo River and almost 3,600 square kilometres of its river basin system. It includes a mosaic of flowing rivers, inland islets, lakes and marshes, vestiges of dense rainforests, highly fragmented gallery forests, secondary vegetation (savoka) covering cleared forest, and irrigated farm land. The near-natural ecosystem has the highest concentration of endemic freshwater fish species in Madagascar: it is home to 19 endemic fish species including the endangered Oxylapia polli. There are also six species of endemic birds: Madagascar rail (Rallus madagascariensis), Madagascar snipe (Gallinago macrodactyla), Madagascar sparrowhawk (Accipiter madagascariensis), rufous-headed ground roller (Atelornis crossleyi), Madagascan yellowbrow (Crossleyia xanthophrys) and Pollen’s vanga (Xenopirostris polleni); ten species of lemurs; reptiles; and ten endemic plant species. Among other resources, the Site provides materials for handicraft production, as well as fish, rice and a unique range of medicinal plants. Threats within the Site include habitat destruction from rice cultivation, gold and precious stones mining, and poaching for local consumption. These activities cause water pollution and disruption of riverbeds.

Administrative region: 
districts de Marolambo et Mahanoro, Région Atsinanana, Province Autonome de Toamasina

  • National legal designation: 
    • Aire protégée - Aire Protégée ‘Rivière Nosivolo’
  • Last publication date: 


Ramsar Information Sheet (RIS)

Site map

Additional reports and documents