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Subject: Re: Floating atmospheric regulators
From: "Peter A. Nelson" <[log in to unmask]>
Reply-To:Scientific forum on fish and fisheries <[log in to unmask]>
Date:Fri, 22 Jun 2007 09:27:51 -0700
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Actually, UV light does penetrate to significant depths (in clear  
oceanic water there is sufficient UV light to, theoretically, provide  
visual sensitivity at 200 m depth, Losey et al. 1999 J Fish Biol  
54:921-943) and marine organisms have evolved physiological and  
behavioral traits both to take advantage of UV vision and coloration  
and to protect themselves from its deleterious effects.

...just to shed some light on the issue!

Cheers,

Peter A. Nelson, Marine Advisor
University of California Sea Grant Cooperative Extension
2 Commercial Street, Suite 4
Eureka, California 95501

Tel 707.443.8369
Fax 707.445.3901
[log in to unmask]



On Jun 21, 2007, at 5:05 PM, Trevor J. Kenchington wrote:

> Also, UV light has nasty effects on living tissue (as my sunburnt  
> back is telling me after a rare clear day here). But UV doesn't  
> penetrate far into seawater, so most marine organisms have not  
> evolved ways to cope with it. By focusing on surface-dwelling  
> neuston, you would be closing the door to most of the plants that  
> could take up the excess carbon.


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