lee wrote on Apr 8
th, 2020 at 4:28pm:
The_Barnacle wrote on Apr 8
th, 2020 at 7:50am:
One quarter of the Great Barrier Reef suffered severe bleaching this summer in the most widespread outbreak ever witnessed, according to analysis of aerial surveys of more than 1,000 individual reefs released on Tuesday.
Survey from helicopter is really good to determine coral deaths.
Where is there any mention of surveying coral deaths?
The survey was for coral bleaching which doesn't necessarily mean the coral dies
Quote:From past bleaching events the Marine Park Authority anticipates
- corals on reefs with no or negligible bleaching will mostly recover and survive this event.
- Moderately bleached reefs are likely to show mixed responses depending on their history of disturbance.
- Corals on reefs with severe bleaching, however, are likely to have significantly higher, though variable, mortality rates.
http://www.gbrmpa.gov.au/the-reef/reef-health Some initial observations from the aerial surveys:
Widespread moderate to severe bleaching across much of the Reef
Severe bleaching was more widespread than in previous bleaching eventsAreas, mostly well offshore, had no or low level bleaching
Some areas have reefs with a mix of negligible, moderate and severe bleaching (the southern offshore reefs of the Marine Park)
There are reefs that severely bleached for the first time in 2020 and other reefs that bleached severely in 2016, 2017 and 2020
http://www.gbrmpa.gov.au/the-reef/reef-health
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