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95% of reefs gone by 2050???


180Brandy
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The ocean has pretty large temperature swings, and reef life handles them as long as they aren't too rapid, and the temp doesn't go too high -- if it does, the coral bleaches. A small increase in the average temperature means a much larger increase on the top end, higher water temps and more time spent there. Check out:

 

http://coralreefwatch.noaa.gov/satellite/archive/sst_series_daviesreef_path.html

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I found this study done by the Australian Institute of Marine Science among others. It seems to suggest that an increase of the ocean temperature by 1.5 C will have significant impact in coral reefs. The real impact is due to the peak summer temperatures. One thing that I didn't expect was the differences between this reports bleaching threshold and those shown on the noaa graphs. Seems like there is still alot to be learned

 

http://www.nrw.qld.gov.au/science/pdf/barrier_reef_report_1.pdf

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