Australian Institute of Marine Science

Assembled from 29 blocks · 1 evidence · 16 related

1. Story
2. Australia's tropical marine research agency, whose Long-Term Monitoring Program has surveyed a fixed set of Great Barrier Reef sites annually since 1985 using manta-tow surveys for broad-scale cover and fixed photo transects for detail. The programme is the reason the Great Barrier Reef has something most reef systems lack: a consistent, single-method record of coral cover spanning four decades, against which a claim about decline or recovery can actually be tested. That record has produced results in both directions and both are instructive. It supported the 2012 finding that coral cover had roughly halved over twenty-seven years; it also recorded record-high cover on parts of the reef in the early 2020s, driven by rapid regrowth of fast-growing Acropora — the same genus most vulnerable to the next bleaching event. A long series is what allows a reader to distinguish a trend from the last thing that happened.
3. Knowledge
4. Great Barrier Reef
5. Australian Institute of Marine Science
6. Connections
7. Great Barrier Reef
8. The Long-Term Monitoring Program begins annual reef surveys
9. Twenty-seven years of monitoring show coral cover roughly halved
10. Mass bleaching on the Great Barrier Reef
11. The fifth mass bleaching on the Great Barrier Reef since 2016
12. Coral Triangle
13. Mesoamerican Barrier Reef System
14. Crown-of-thorns starfish (Acanthaster)
15. Australian Institute of Marine Science
16. Great Barrier Reef Marine Park Authority
17. Great Barrier Reef Marine Park Act creates a single managing authority
18. The Great Barrier Reef is inscribed on the World Heritage List
19. Mass synchronous spawning described on the Great Barrier Reef
20. The Long-Term Monitoring Program begins annual reef surveys
21. A measured decline in Great Barrier Reef coral calcification is published
22. Twenty-seven years of monitoring show coral cover roughly halved
23. Mass bleaching on the Great Barrier Reef
24. A second consecutive year of mass bleaching on the Great Barrier Reef
25. Mass bleaching on the Great Barrier Reef during a La Nina
26. The fifth mass bleaching on the Great Barrier Reef since 2016
27. The current state of the fourth global bleaching event is not established in this package
28. Evidence
29. Mean hard coral cover on surveyed Great Barrier Reef sites fell from 28.0 per cent in 1985 to 13.8 per cent in 2012, with roughly forty-eight per cent of the loss attributed to tropical cyclones, forty-two per cent to crown-of-thorns starfish and ten per cent to bleaching. V55 verification basis: not consulted; the cover figures and the three attribution percentages are stated from the producing model's knowledge of this widely cited result.