As a megaport rises in Cameroon, a delicate coastal ecosystem ebbs

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As a megaport rises in Cameroon, a delicate coastal ecosystem ebbs
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While aiming to improve the country’s economy, the port has generated unintended environmental consequences, intensifying coastal erosion, increasing human pressure and pollution, and endangering marine life and local fishers’ livelihoods. Yet Kribi is renowned for its fish. Customers come from the cities of Douala, Yaoundé and Bafoussam to stock up. A decline in fishing could have dramatic consequences for the fishermen of Kribi as well as on the food security of the cities they supply.

In 2022, a team of researchers from the University of Douala, the University of Yaoundé 1 and the University of Liège in Belgium compared satellite images of the Kribi coastline before and after the construction of the port, and measured coastal erosion using GPS. The results, published in aare revealing. Between 1973 and 2000, the coastline gained around 0.4 m of sediment per year.

The mangrove forests, unique ecosystems at the boundary between land and sea, not only protect the coast but also store more carbon than tropical rainforests hectare for hectare. Image by Jon Bowen via The demographic growth brought about by the port’s construction is also driving demand for smoked fish, a dietary staple throughout Central Africa, which is further impacting the mangroves. Mangrove wood is used to build fishers’ huts and dugout canoes, but above all as fuel for smoking the fish. Yet mangrove forests, unique ecosystems at the boundary between land and sea, not only protect the coast but also store more carbon than tropical rainforests hectare for hectare.

An olive ridley turtle. When the bags find their way into the sea, turtles often mistake them for their main food, jellyfish. Image by Siddarth Machado via Certain fish also eat the bags, before being consumed by larger fish and humans. So the plastic waste affects the whole food chain.

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