Good information: Barrier Reef Research Paper
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This was followed by another mass bleaching the following year.
This was the first case of back-to-back mass bleaching events on the reef. The result was a 30 percent loss of corals ina further 20 percent loss inand big changes in community structure. New research published in Nature today now reveals the damage that these losses caused to the wider ecosystem functioning of the Great Barrier Reef. Fast-growing staghorn and Paprr corals suffered a rapid, catastrophic die-off, changing the three-dimensional character of many individual reefs.
In areas subject to the most sustained high temperatures, some corals died without even bleaching — the first time that such rapid coral death has been documented on such a wide scale. The research team, led by Terry Hughes of James Cook University, carried out Barrier Reef Research Paper surveys during the two bleaching events, at a range of scales.
Essay on “The Sad Fate of Coral Reefs”
First, aerial surveys from planes generated thousands of videos of the reef. The data from these videos were then verified by teams of divers in the water using traditional survey methods. Finally, teams of divers took samples of corals and investigated their physiology in the laboratory. This included counting the density of the microalgae that live within the coral cells and provide most of the energy for the corals.
Corals And Coral Oceans : The Great Barrier Reef
The latest paper follows Barrier Reef Research Paper from earlier research which documented the 81 percent of reefs that bleached in the northern sector of the Great Barrier Reef, 33 percent in the central section, and 1 percent in the southern sector, and compared this event with previous bleaching events. Another previous paper documented the reduction in time between bleaching events since the s, down to the current interval of one every six years.
Although reef scientists have been predicting the increased frequency and severity of bleaching events for two decades, this paper has some surprising and alarming results.
Bleaching events occur when the temperature rises above the average summer maximum for a sufficient period. Generally, the higher the DHW, the higher the expected coral death. Modelling of the expected results of future bleaching events has been based on these estimates, often with the expectation the thresholds will become higher over time as corals Reseatch to changing conditions.]
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