Historical nautical maps show loss of coral reefs

Scientists have used detailed nautical maps created by British sailors in the 1700s to study more than two centuries of coral loss in the Florida Keys. They found that over the past 240 years, the region has lost more than half of its coral structures, with some areas, particularly closer to shore, either gone completely or having lost up to 90 percent of their extent.

Sea Floor Erosion in Coral Reef Ecosystems Leaves Coastal Communities at Risk

In the first ecosystem-wide study of changing sea depths at five large coral reef tracts in Florida, the Caribbean and Hawai’i, U.S.G.S researchers found the sea floor is eroding in all five places, and the reefs cannot keep pace with sea level rise. As a result, coastal communities protected by the reefs are facing increased risks from storms, waves and erosion.

Dead zones may threaten coral reefs worldwide

Dead zones affect dozens of coral reefs around the world and threaten hundreds more according to a new study. Watching a massive coral reef die-off on the Caribbean coast of Panama, they suspected it was caused by a dead zone – a low-oxygen area that snuffs out marine life – rather than by ocean warming or acidification.

50 Reefs Initiative Is Good News For Coral Reefs

Coral reefs are in crisis. The facts are clear: without a different approach to conservation, coral reefs will continue to decline toward extinction. However, an announcement last week in Bali, Indonesia gave us some new reasons to be hopeful.