A second consecutive year of mass bleaching on the Great Barrier Reef

Assembled from 43 blocks · 1 evidence · 31 related

1. Story
2. Bleaching returned in 2017, this time concentrated in the central sector that had largely escaped the previous year. Back-to-back events on adjacent sectors left very little of the system untouched across the two years combined, and — the more consequential point — gave the 2016 survivors no recovery interval at all. A reef that bleaches twice in successive summers is not a reef that has been hit twice; it is a reef whose recovery process never started.
3. Knowledge
4. Coral bleaching
5. Great Barrier Reef
6. A second consecutive year of mass bleaching on the Great Barrier Reef
7. Connections
8. Mass bleaching on the Great Barrier Reef
9. Great Barrier Reef
10. Coral bleaching
11. Coral Triangle
12. Mesoamerican Barrier Reef System
13. Crown-of-thorns starfish (Acanthaster)
14. Australian Institute of Marine Science
15. Great Barrier Reef Marine Park Authority
16. Great Barrier Reef Marine Park Act creates a single managing authority
17. The Great Barrier Reef is inscribed on the World Heritage List
18. Mass synchronous spawning described on the Great Barrier Reef
19. The Long-Term Monitoring Program begins annual reef surveys
20. A measured decline in Great Barrier Reef coral calcification is published
21. Twenty-seven years of monitoring show coral cover roughly halved
22. Mass bleaching on the Great Barrier Reef
23. A second consecutive year of mass bleaching on the Great Barrier Reef
24. Mass bleaching on the Great Barrier Reef during a La Nina
25. The fifth mass bleaching on the Great Barrier Reef since 2016
26. The current state of the fourth global bleaching event is not established in this package
27. Reef-building corals (Scleractinia)
28. Marine heatwave
29. Degree Heating Weeks (DHW)
30. Symbiont shuffling and thermal tolerance
31. The first global mass bleaching event
32. A published projection that reefs would bleach faster than they could recover
33. The second global bleaching event
34. The third global bleaching event
35. Mass bleaching on the Great Barrier Reef
36. A second consecutive year of mass bleaching on the Great Barrier Reef
37. The interval between severe bleaching events is measured, and it has collapsed
38. Mass bleaching on the Great Barrier Reef during a La Nina
39. The fourth global bleaching event is confirmed
40. The fifth mass bleaching on the Great Barrier Reef since 2016
41. The current state of the fourth global bleaching event is not established in this package
42. Evidence
43. The median return time between severe bleaching events at reef locations worldwide has fallen to under six years, from intervals measured in decades in the early 1980s. V55 verification basis: not consulted; the return-time result is stated from the producing model's knowledge of this paper, and the value is given as "under six years" rather than to a decimal place.