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Tiny man-made lagoon plots, al-Qataya, stretch out towards the Mediterranean in the Ghar El Melh wetlands in Tunisia.
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It is home to a centuries-old system of agriculture that climate change threatens to wipe out.
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Invented in the 17th century by North Africa's Andalusian diaspora, the Ramli – meaning "sandy" in Arabic – agricultural system irrigates crops entrenched in a mix of sand and manure, at the same time keeping salt water at bay.
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The United Nations' Food and Agriculture Organisation last year added Ghar El Melh to its list of agricultural heritage systems of global importance.
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The system's reliance on a fragile balance of rain and sea tides means it faces unusual challenges.
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Farmer Ali Garsi notes that a lack of rain negatively affects the quantity of his yields.
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The rising sea levels and increase in temperature pose a threat to Ghar El Melh, and could end the area's unique system of irrigation and farming.