[Coral-List] Mystery Event - (Abemama and Nonouti)

Larry at OpenDoorWorld.com Larry at OpenDoorWorld.com
Sat Aug 25 19:22:28 EDT 2007

(Abemama and Nonouti)
Causes not likely:

> >>These atolls are tectonically stable 
> >> far from any active plate boundaries 

> >> thousands of kilometers from any significant land mass with surface run off.  

> >> both of the islands have small populations who live a traditional
> >> subsistence lifestyle (few vehicle's, no electricity or reticulated water,

> >> few imported products, no intensive agriculture, etc) in relatively pristine

> >> Any advice, assistance, comments are welcome.

OK, i find this conversation interesting, 
        however i am not a scientist... 
        so this is just my 2 cents worth..  :-)

Considering the location, (Abemama and Nonouti) are near 
an intersection of opposing conveyer currents, could it be that 
the deeper upwelling currents, swept further upwards along 
the underwater mountainside of the islands are carrying the 
heavier toxic chemicals, pcb's/pbde's, etc., (dumped daily 
by industry) and now possibly circulating in the deepest 
parts of the our ocean conveyor belt currents, since these 
would be heavier than ocean water and not readily soluble 
in water, however, these known toxins are readily accumulated 
in the food chain. 



Also.. there may be a PCB link to the 300% increase in Autism in the USA. 

> _______________________________________________
> Date:	July 23, 2007
> More on:	
> Dolphins and Whales, Sea LIfe, Marine Biology, Oceanography, Life
> Killer Whales Metabolize Contaminants, Yet Still Show Record-High
> Contamination Levels
> Killer whales hold the gloomy record of being the
> most-polluted European arctic mammal, says a new study published in the
> latest issue of Environmental Toxicology and Chemistry. Levels of
> contaminants measured in whales near Norway were among the highest ever
> measured in marine mammals, exceeding levels found in harbor seals, polar
> bears, and white whales. Killer whales are widely distributed marine
> mammals capable of surviving on a variety of foods. In this study, blubber
> samples were taken, using a dart gun, from eight live, free- ranging
> whales. Contamination levels were six to 20 times higher in killer whales
> compared to other high-Arctic species, such as white whales. Very high
> levels of halogenated organic contaminants (HOCs), including
> polychlorinated biphenyls (PCBs) and chlorinated pesticides were found in
> the tissues of killer whales, apparently due to their high concentration
> in the whales' primary diet source, herring. Despite the ban on most PCBs,
> toxaphene, and DDT, these compounds pose a continuing threat to the health
> of humans and marine organisms. New HOCs, such as the polybrominated
> diphenyl ethers (PBDEs) which are used as flame retardants, continue to be
> released into the environment. Organisms are particularly vulnerable to
> HOCs in the marine environment. Because of the low water solubility of
> these compounds, exposure through the food web leads to the highest
> concentrations in marine mammals. Several studies have demonstrated
> adverse effects on the endocrine and immune systems of some marine
> mammals. While most HOCs are considered to be poorly metabolized, killer
> whales in this study had lower levels of certain PCBs, pesticides
> (chlordane, DDE), toxaphene, and PBDEs than expected, suggesting an
> ability to metabolize them. This was unexpected, because other marine
> mammals, such as dolphins and white whales, show a much lower ability to
> metabolize HOCs. Note: This story has been adapted from a news release
> issued by Allen Press.
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