Scientists have long known that reefs are in peril, but a new study published today in the journal One Earth quantifies coral losses around the world. The in-depth analysis reveals half of coral reefs have been lost since the 1950s. Scientists say climate change, overfishing and pollution are decimating these fragile ecosystems and putting communities and livelihoods in jeopardy. Their study, which is among the most comprehensive assessment of reefs and their associated biodiversity to date, underscores the rapid pace of global coral collapse. “Coral reefs have been in decline worldwide—I think that's pretty commonly accepted,” says Tyler Eddy, a research scientist at Memorial University of Newfoundland who co-authored the study. “We didn't necessarily know the magnitude of how much, when we looked on a global scale, that reefs had declined.” Coral reefs are biodiversity hotspots that provide habitat for fishes, protection for coastal communities and generate billions of dollars for fisheries and tourism. Part of the reason corals are dying is that they’re ultra-sensitive to changes in water temperature and acidity, says biologist Mary Hagedorn, who wasn’t involved in the study. [Read more…] Photo credit: Jim Maragos, U.S. Fish and Wildlife Service
|