Zadie Neufville (Caribbean 360) reports on Jamaica’s dying coral reefs and local marine scientists’ efforts to rebuild the island’s reefs and coastal defenses “one tiny fragment at a time—a step authorities say is critical to the country’s climate change and disaster mitigation plans.” Here are excerpts with a link to the full article below:

Five years ago, local hoteliers turned to experimental coral gardening in a desperate bid to improve their diving attractions, protect their properties from frequent storms surges and arrest beach erosion.

In 2014, their efforts were boosted when the Centre for Marine Science (CMS) at the University of the West Indies (UWI) Mona scored a US$350,000-grant from the International Development Bank (IDB) for the Coral Reef Restoration Project. Project director and coastal ecologist Dale Webber told IPS that his team will carry out genetic research, attempt to crack the secrets of coral spawning and re-grow coral at several locations across the island and at the centre’s Discovery Bay site. The project will also share the research findings with other islands as well as another IDB project, Belize’s Fragments of Hope.

The reefs of Discovery Bay have been studied for more than 40 years, and are the centre of reef research in Jamaica. It is also home to several species of both fast and slow growing corals that Webber says are particularly resilient. “They have tolerated disease, global warming, sea level rise, bleaching, etc. – all man and the environment have thrown at them – and are still flourishing. So they have naturally selected based on their resilience,” he explains.

A total of 60 fragments from five species of corals have been placed on the trees in the coral nursery. The five species are Orbicella annularis; Orbicella faveolata; Siderastrea siderea; Acropora palmata and Undaria agaricites. These fragments are being monitored as they grow and will be planted on the reefs.

Jamaica’s reefs – which make up more than 50 per cent of the 1,022 kilometres of coastline, have over the years been battered by pollution, overfishing and improper development. Finally in 1980 Hurricane Allen smashed them.

Many hoped the reefs would regenerate, but sluggish growth caused by, among other things, frequent severe weather events and an increase in bleaching incidences due to climatic changes sent stakeholders searching for options.

A massive Caribbean-wide bleaching event in 2005 resulted in widespread coral death and focused attention on continuing sand loss at some of the island’s most valuable beaches. But aside from the devastation caused by the hurricane, scientists say the poor condition of the reefs are also the result of a die-off of the sea urchin population in 1982 and the continued capture of juvenile reef fish and the parrot. Predictions are that the region could lose all its coral in 20 years.

Some reports say that only about eight per cent of Jamaican corals are alive. However, new surveys conducted by the UWI at several sites across the island show coral cover of between 12 and 20 per cent.

Along Jamaica’s north coast from Oracabessa in St. Mary to Montego Bay, coral recovery projects have yielded varying levels of success. The Golden Eye Beach Club, the Oracabessa Fish Sanctuary and Montego Bay Marine Park are among those that have experimented with coral gardening.

The process is tedious, as divers must tend the nurseries/gardens, removing algae from the fragments of corals as they grow. The pieces are then fixed to the reefs. The results are encouraging and many see this is an expensive but sure way to repopulate dying reefs. A combination of techniques, management measures and regeneration have boosted coral cover at Discovery Bay from five percent to 14 per cent in recent years. “We hope to supplement this and get it growing faster,” Webber who also heads UWI’s Centre for Marine Sciences says. At the Centre’s newest Alligator Head location in the east of the island, the aim is to increase the coral cover from the existing 40 per cent. The nurseries have also been set up at the site in Portland to compare the differences in growth rate between sites.

At the NGO-operated Montego Bay Marine Park, where an artificial reef and coral nursery was established in the fish sanctuary, outreach officer Joshua Bailey reports:  “There have been moderate successes. New corals are spawning and attracting fish.” [. . .]

For full article, see http://www.caribbean360.com/news/jamaicas-coral-gardens-give-new-hope-for-dying-reefs