View Full Version : Iron concentration on Reef
takayan
10/11/2009, 11:36 AM
I read Randy's article about Iron, but it does not mention the iron concentration on Reef. Could someone give me the information about the iron concentration on Reef?
Randy Holmes-Farley
10/11/2009, 11:44 AM
In reef water as opposed to other places in the ocean?
takayan
10/11/2009, 11:55 AM
Randy,
I should say that there are different iron concentration between the general ocean and reef? We can say it is the same?
Boomer
10/11/2009, 02:59 PM
You will not find any meaningful data on iron on corals reefs as there are to many control factors. The ocean goes through cyclic decadal temp shifts. Warmer waters cause a drop in plankton density due to little upwelling, which brings up iron from lower depths, so reefs and the ocean are lower. Then there is the coastal level issue and what coast is the reef off or is it off a island and is it a small or large island. Then there is the issue is it Pacific or Atlantic as the Atlantic is generally higher, due to a lesser diversity and a large lack of coral reefs. So, one could see levels from <0.05 nM to as high as 20 nM in more coastal areas. The mean for the surface ocean waters is 0.07 nM( ~ 0.0000040 ppm ). The Atlantic is is about 0.02 higher and the Pacific about 0.02 lower.
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