description Odiel Marshes Overview
The Odiel Marshes (Marismas del Odiel) is a protected wetland complex located at the mouths of the Odiel and Tinto rivers in Huelva province, southwestern Spain. This estuarine ecosystem covers approximately 7,185 hectares and was designated a UNESCO Biosphere Reserve in 1983 and a Ramsar Wetland of International Importance in 1989. The marshes serve as a critical habitat for numerous bird species, including spoonbills, flamingos, and various waders, making it one of the most important wetland areas on the European Atlantic coast for migratory and resident water birds.
help Odiel Marshes FAQ
Where are the Odiel Marshes located?
The Odiel Marshes (Marismas del Odiel) is a protected estuarine wetland complex located in southwestern Spain. It sits precisely at the mouths of the Odiel and Tinto rivers within the Huelva province.
How large is the Odiel Marshes Biosphere Reserve?
This massive ecosystem covers approximately 7,185 hectares of protected land and water. It was officially designated as a UNESCO Biosphere Reserve in the year 1983 due to its immense ecological value.
What kind of wildlife can be found in the Marismas del Odiel?
The marshes serve as a critical habitat for a vast array of birdlife, particularly functioning as a crucial stopover for migratory birds traveling between Europe and Africa. Visitors can easily spot extensive colonies of spoonbills, herons, and flamingos in the wetlands.
Why is the water chemistry in the Odiel Marshes historically significant?
The marshes receive water from the Rio Tinto, a river famous for its highly acidic, reddish water caused by natural heavy metals and centuries of mining. Despite this harsh chemistry, the estuary supports a unique and resilient ecosystem of extremophile organisms.
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