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Threats to coral reefs ranked by frequency of appearance in abstracts from the 2016 International Coral Reef Symposium (2,101 abstracts total)
| Type of threat | No. of abstracts | % of abstracts |
| Climate/thermal stress | 610 | 29.0 |
| Fishing | 423 | 20.1 |
| Disease/invasive species | 216 | 10.3 |
| Sedimentation/land use | 214 | 10.2 |
| Ocean acidification | 180 | 8.6 |
| Eutrophication | 163 | 7.8 |
| Hypoxia | 5 | 0.2 |
