UNESCO Biosphere Reserve in the context of "Lake Tana"

⭐ In the context of Lake Tana, a UNESCO Biosphere Reserve is considered


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⭐ Core Definition: UNESCO Biosphere Reserve

The Man and the Biosphere Programme (MAB) is an intergovernmental scientific program, launched in 1971 by UNESCO, that aims to establish a scientific basis for the 'improvement of relationships' between people and their environments.

MAB engages with the international development agenda, especially the Sustainable Development Goals and the Post 2015 Development Agenda. The MAB programme provides a platform for cooperation in research and development. As of July 2024, 759 sites across 136 countries, including 22 transboundary sites, have been included in the World Network of Biosphere Reserves. The reserves cover more than 5% of the world’s surface and are home to over 260 million people.

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👉 UNESCO Biosphere Reserve in the context of Lake Tana

Lake Tana (Amharic: ጣና ሐይቅ, romanized: T’ana ងāyik’i; previously transcribed Tsana) is the largest lake in Ethiopia and a source of the Blue Nile. Located in Amhara Region in the north-western Ethiopian Highlands, the lake is approximately 84 kilometres (52 miles) long and 66 kilometres (41 miles) wide, with a maximum depth of 15 metres (49 feet), and an elevation of 1,788 metres (5,866 feet). Lake Tana is fed by the Gilgel Abay, Reb and Gumara rivers. Its surface area ranges from 3,000 to 3,500 square kilometres (1,200 to 1,400 square miles), depending on season and rainfall. The lake level has been regulated since the construction of the control weir where the lake discharges into the Blue Nile. This controls the flow to the Blue Nile Falls (Tis Abbai) and hydro-power station.

In 2015, the Lake Tana region was nominated as a UNESCO Biosphere Reserve recognizing its national and international natural and cultural importance.

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UNESCO Biosphere Reserve in the context of San Andrés (island)

San AndrĂ©s (Islander Creole English: San Andres) is a coral island in the Caribbean Sea. Politically part of Colombia, and historically tied to the United Kingdom, San AndrĂ©s and the nearby islands of Providencia and Santa Catalina form part of the department of San AndrĂ©s, Providencia and Santa Catalina; or The Raizal Islands. San AndrĂ©s, in the southern group of islands, is the largest island of Colombia. The official languages of the department are Spanish, English, and San AndrĂ©s–Providencia Creole.

While San Andrés is located 50 km (31 mi) south of Providencia, the Colombian archipelago is approximately 750 km (470 mi) north of the Colombian mainland. This archipelago encompasses a total area of 57 km (22 sq mi), including the outer cays, reefs, atolls and sand banks, with the area of the islands being 45 km (17 sq mi). In 2000, it was declared a UNESCO Biosphere Reserve, named "Seaflower Biosphere Reserve", which not only includes the islands but also about 10% of the Caribbean Sea, amounting to a vast marine area of 300,000 km (120,000 sq mi). The purpose of this declaration is to ensure that the ecosystem, which is rich in biodiversity, is well preserved and conserved.

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UNESCO Biosphere Reserve in the context of CĂĄt BĂ  Island

CĂĄt BĂ  Island (Vietnamese: ĐáșŁo CĂĄt BĂ , IPA: [ɗǎw kĂĄt ɓàː]) is the largest of the 367 islands spanning 262.41 km (101.32 sq mi) that comprise the Cat Ba Archipelago, which makes up the southeastern edge of Lan Ha Bay in Northern Vietnam and maintains the dramatic and rugged features of Ha Long Bay. The archipelago has been a UNESCO Biosphere Reserve since 2004 and a part of Ha Long Bay – Cat Ba Archipelago World Heritage Site since 2023.

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