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<DIV>Hi corallites,</DIV>
<DIV> </DIV>
<DIV>Now you mention it Jeremy, I remember that your suggestion was also made in
the literature I was reading some way back.</DIV>
<DIV> </DIV>
<DIV>It seemed like an interesting complimentary idea then too, i.e. that by
simply making the light visible it can potentially contribute to PUR, but I
can't remember if there is any hard evidence for or against this either.
</DIV>
<DIV> </DIV>
<DIV>Plant physiologists and aquarists know that photosynthesis tends to use
more of the short visible wavelengths. But to provide a little more detail
here are a few "raw" notes from my brief venture into this topic several years
ago, and a reference list attached as a "Word" document for those
interested.</DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV>PHOTOSYNTHETIC PIGMENTS ABSORB BROADLY BETWEEN 400-550nm & NARROWLY
BETWEEN 650-700nm (KINZIE ET AL): LIKE THE BLUE OPEN OCEAN THE WAVELENGTHS THAT
PENETRATE MOST ON CORAL REEFS ARE BETWEEN 440-490NM. THIS HAS THE IMMEDIATE
CONSEQUENCE OF CHARACTERIZING THE PHOTOSYNTHETIC PIGMENTS OF THE ZOOXANTHELLAE
SUCH THAT CHL A, CHL C, & THE CAROTENOID PERIDININ, WHICH COLLECTIVELY
CONSTITUTE THE MAIN LIGHT HARVESTING COMPLEX ASSOCIATED WITH PSII, SHOW THEIR
GREATEST ABSORPTION BETWEEN 400-550NM. </DIV>
<DIV> </DIV>
<DIV>NON-VISIBLE WAVELENGTHS INCLUDE ULTRAVIOLET AND INFRA-RED. AS FAR AS
INFRA-RED WAVELENGTHS ARE CONCERNED THERE ISN'T MUCH KNOWN. BUT CORALS ARE
HIGHLY REFLECTIVE TO THESE WAVELENGTHS, AND EMIT A GREAT DEAL OF INFRA-RED LIGHT
IN COMPARISON TO OTHER REEF EPIFAUNA. THIS FEATURE HAS BEEN USED IN THE MAPPING
OF CORAL REEFS. THERE IS AN INTERESTING IDEA IN FALKOWSKI ET AL THAT THERE MAY
IN FACT BE SOME CONVERSION OF PAR INTO INFRA-RED.<BR> <BR>FLUORESCENCE
UNDER BOTH NATURAL & ARTIFICIAL UV. USUALLY GREEN, ALSO ORANGE, PINK &
RED. FLUORESCENT PIGMENT EXISTS AS SPHERULES <2mm DIFFUSE OR ENCASED IN
GRANULES IN EPITHELIAL LAYER, ONLY IN TISSUES EXPOSED TO DAYLIGHT. PIGMENT IS
STABLE TO OXIDIZING & REDUCING CONDITIONS BUT IS NOT STABLE TO P.H., &
DISSOLVES READILY IN DISTILLED WATER. FUNCTION UNKNOWN
BUT NOT RESPIRATORY. <STRONG>ABSORBS IN UV REGION AT 330nm & EMITS LIGHT AT
450-510nm</STRONG>: POSSIBLY A PROTECTIVE &
<STRONG><U>PHOTOSYNTHETIC</U> </STRONG>ACCESSORY (KAWAGUTI
1944).</DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV>Regards,</DIV>
<DIV> </DIV>
<DIV>Robert Murray.</DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV>==========================<BR>ROBERT MURRAY BSc, FGA,<BR>Discovery
Bay Marine Laboratory,<BR>Discovery Bay, Jamaica, W.I.<BR> <BR>Tel. (876)
973 2946<BR>Fax. (876) 973 3091<BR><A
href="mailto:rmurray@infochan.com">rmurray@infochan.com</A><BR><A
href="http://www.DBML.ORG">WWW.DBML.ORG</A><BR>==========================</DIV>
<DIV> </DIV>
<DIV> </DIV>
<BLOCKQUOTE
style="BORDER-LEFT: #000000 2px solid; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px; PADDING-LEFT: 5px; PADDING-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A href="mailto:woodley@uwimona.edu.jm" title=woodley@uwimona.edu.jm>Jeremy
Woodley</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A href="mailto:matz@ibch.ibch.ru"
title=matz@ibch.ibch.ru>Mikhail Matz</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Cc:</B> <A href="mailto:rmurray@infochan.com"
title=rmurray@infochan.com>Robert Murray</A> ; <A
href="mailto:coral-list@coral.aoml.noaa.gov"
title=coral-list@coral.aoml.noaa.gov>coral list</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Friday, August 04, 2000 07:29</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: Orange Montastrea cavernosa
recruits?</DIV>
<DIV><BR></DIV>Does the fluorescence make more of the energy of uv light
available for<BR>photosynthesis? I am not sufficiently familiar with the
action spectra to<BR>judge for myself.<BR><BR>Jeremy
Woodley<BR></BLOCKQUOTE></BODY></HTML>