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      Biosphere Reserve Information



  General Description   This Biosphere Reserve is a coastal freshwater delta of the Parana River located just north of Buenos Aires. It is an area rich in biodiversity including species that find their southernmost limit of distribution, which makes the area interesting for the conservation of genetic diversity. The flooded river beds are dominated by Totora (Schoenoplectus californicus) and in certain young islands, ‘pajonal’ (Scirpus giganteus), ‘margaritón de bañado’ (Senecio bonariensis), ‘espadaña’ (Zizaniopsis bonariensis) and ‘saeta’ (Sagitaria montevidensis) are found. The Biosphere Reserve also contains low forests, forest ecosystems and secondary forests with Black Cottonwood (Populus spp.) and Willow Salix spp. and relict Monte Blanco forest with ‘Canelón’ (Rapanea spp), ‘Arrayan’ (Blepharocalyx tweediei). The main human activity in the delta is the exploitation of the willow forest for commercial purposes. Some areas are however difficult to access and human impact is low. The region has suffered from a loss of human population and today there are only 3,600 habitants living there (2001). The establishment of the Biosphere Reserve aims at revitalizing the economy of the region at the same time as conserving the natural and cultural values of the area.
  Major ecosystem type   Coastal freshwater wetland; temperate grasslands
  Major habitats & land cover types   Coastal freshwater wetland; permanently inundated grasslands dominated by Schoenoplectus californicus; semi-inundated grasslands with species such as Scirpus giganteus, Panicum grumosum, Senecio bonarienses, Ludwigia spp., Typha spp., Zizaniopsis bonariensis and Sagitaria montevidensis; low forests with Erythrina crista-galli; floating marshes; forestry systems with Populus ssp. and Salix ssp.; secondary forests with Salix spp. and Populus spp., relict Monte Blanco forest with Rapanea spp., Blepharocalyx tweediei, Nectandra falcifolia, Allophylus edulis etc.; water courses; horticulture; fruit cultivations; grazing areas
  Location   34°15'S; 58°58'W (central point)
  Area (hectares)    
  Total   88,624
  Core area(s)   10,694
  Buffer zone(s)   15,473
  Transition area(s) when given   62,557
  Altitude (metres above sea level)   -30 to +3
  Year designated   2000
  Administrative authorities   Municipal de San Fernando

Last updated: 07/03/2011

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