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So on the 2016 and 2017 bleaching there is no doubt that in the presence of higher temperatures the nitrogen (and for that matter micro-metals like zinc in suns
by kls 7y ago
So on the 2016 and 2017 bleaching there is no doubt that in the presence of higher temperatures the nitrogen (and for that matter micro-metals like zinc in sunscreen) become more deadly. Ocean temperature is only speculation as they did not measure other variables. There is an effort in Australia to reproduce the findings in the US but it has not concluded. I am trying to find that information. The prevailing though is those warming events coincided with a water quality event which make the water quality events (the true killer) even more deadly. The belief is that that link will established just as it was in Florida.
The issue is though that die off has been observed in the absence of temperature and the survival has been observed over what was believed to be threshold but die-off always happened with the ratio of nitrogen to phosphates hit a threshold.
I try provide the links as they are, not trying to cherry pick my opinion is based on experience with the reefs and the range of studies I have seen. There is no doubt that there is still a prevailing theme of temperature as it was long believed to be the primary driver, it takes time for the mind-shift to happen even in the research community.
I am also trying to find the Cuban reef study as it sits in the same thermocline as the Florida Keys barrier reef. I will post them when I find them as I said I help out and help my daughter with her studies, I am not a researcher but I feel I have a pretty good handle on the scope of research and findings on reef destruction, I just don't have every paper at my fingertips like the researchers do. I have a query out to a few of the Mote scientist to see if they can provide me with some public accessible links to those studies.