Descripción: UNESCO, MAB Biosphere Reserves Directory.
«The Costero del Sur Biosphere Reserve is located in the Province of Buenos Aires in the southern part of the Rio de la Plata estuary on the Atlantic coast. It is situated in a humid and swampy region that comprises pampas grasslands characterized by deep, fertile soils. It includes coastal areas, flooded and unflooded swamps, wetlands and dry forests.»