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Home / Travel / Guanahacabibes: With pristine reefs at stake, Cuba bets on coral nurseries

Guanahacabibes: With pristine reefs at stake, Cuba bets on coral nurseries

Luminous yellow and blue fish dart through the fragments of coral hanging from rows of pipes anchored to the seabed in Guanahacabibes, in western Cuba, while scientists in diving gear annotate their observations on waterproof clipboards.

travel Updated: Jun 10, 2020 12:58 IST
Reuters | Posted by: Alfea Jamal
Reuters | Posted by: Alfea Jamal
Havana
Divers check a coral reef being raised for research by the National Aquarium of Cuba in Havana, Cuba, June 4, 2020. Picture taken on June 4, 2020. REUTERS/Stringer
Divers check a coral reef being raised for research by the National Aquarium of Cuba in Havana, Cuba, June 4, 2020. Picture taken on June 4, 2020. REUTERS/Stringer(REUTERS)

Luminous yellow and blue fish dart through the fragments of coral hanging from rows of pipes anchored to the seabed in Guanahacabibes, in western Cuba, while scientists in diving gear annotate their observations on waterproof clipboards.

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This is Cuba’s first coral nursery, designed to help the country repopulate its reefs, some of the most pristine in the Caribbean, and make them more resilient in the face of global threats to coral like warming waters, overfishing and illness.

The nursery was created three years ago through a landmark collaboration between the Cuban and Florida aquaria during a short-lived Cuba-U.S. detente since rolled back by U.S. President Donald Trump.

“We want to recover the reefs’ original functions and health,” Pedro Pablo Chevalier, head of the Biodiversity Department of the National Aquarium in Havana, told Reuters.

Corals are animals that settle on the ocean floor and support more sea life than any other marine environment. They also draw huge numbers of tourists, scientists and divers, and provide a natural barrier to flooding.

But since the 1970s, more than half the coral cover in the Caribbean has died, according to the Global Coral Reef Monitoring Network.

ALSO SEE| Photos: With pristine reefs at stake, Cuba bets on coral nurseries

Cuba’s corals have been somewhat shielded by the relative underdevelopment of its coastline, lower use of fertilizer and establishment of protected areas covering a quarter of all insular waters.

But that does not protect them from one of coral’s top threats: bleaching, which occurs when the water is too warm, forcing coral to expel living algae and causing it to calcify and turn white.

Mildly bleached coral can recover if the temperature drops, otherwise it may die. Scientists believe climate change is the underlying cause.

“We are trying to make an assisted selection, an assisted evolution of these corals towards corals that are more resistant to high temperatures, ocean acidification and contamination of Caribbean sea waters,” Chevalier said.

The Aquarium of Florida, which has extensive experience in coral cultivation, donated the infrastructure for Cuba’s nursery and helped train its scientists, in return for the possibility of studying its reefs and scientific exchange.

Chevalier said those exchanges in person had tapered off since Trump’s election but continued online.

“Cuba is like a living lab of resilient coral reefs, of the kind that have long disappeared from Florida,” said Dan Whittle, who heads the Caribbean program at Environmental Defense Fund.

(This story has been published from a wire agency feed without modifications to the text. Only the headline has been changed.)

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