wasp Posted December 8, 2005 Report Share Posted December 8, 2005 Here's an interesting piece http://zeovit.com/forums/showthread.php?t=4229 Do click the article referenced in the first post. It is all quite advanced and is not for everybody, nor is it nessecary to have a thorough understanding of all this stuff. But for the boffins among us, with some spare time, it is a very interesting read. Enjoy! Quote Link to comment Share on other sites More sharing options...
wasp Posted December 9, 2005 Author Report Share Posted December 9, 2005 Well, who actually read it? Quote Link to comment Share on other sites More sharing options...
Brianemone Posted December 9, 2005 Report Share Posted December 9, 2005 i tried but the link to the article and pics didnt work for me Quote Link to comment Share on other sites More sharing options...
slappers Posted December 9, 2005 Report Share Posted December 9, 2005 can see pictures and writing but its way over my head :lol: :lol: Quote Link to comment Share on other sites More sharing options...
cracker Posted December 9, 2005 Report Share Posted December 9, 2005 I started and thought...... This is for wasp and Layton to battle over!! Too deep for me. Quote Link to comment Share on other sites More sharing options...
Jimmy Posted December 9, 2005 Report Share Posted December 9, 2005 I looked at the pics Quote Link to comment Share on other sites More sharing options...
jetskisteve Posted December 9, 2005 Report Share Posted December 9, 2005 ditto Quote Link to comment Share on other sites More sharing options...
cookie extreme Posted December 9, 2005 Report Share Posted December 9, 2005 i did and now i don't know if i just have a headache or if i am hungover? :-? Quote Link to comment Share on other sites More sharing options...
lduncan Posted December 9, 2005 Report Share Posted December 9, 2005 Quite interesting, some cool pics in there. Here's what I got from it: There are differences in elemental concentrations in various parts of the coral during the day, as opposed to night: Graph A = seawater Graph B = extrathecal coelenteron Graph C = internal coelenteron They propose a mechanism (theory) for this, relating to the mucus coat. They suggest that the mucus coat acts as a dynamic semi-permiable membrane allowing selective ion traversal through it. They suggest that the mucus layer may in part control transport of particular ions to inter layers of the coral tissue. However from what I can see, they never took any measurements of the mucus layer (Did anyone see them anywhere? I may have missed them.). They cite two papers which show that mucus production decreases at night for some species of coral: Crossland, C. J. (1987). In situ release of mucus and DOC-lipid from the corals Acropora variabilis and Stylophora pistillata in different light regimes. Coral Reefs 6,35 -42. Crossland, C. J., Barnes, D. J. and Borowitzka, M. A. (1980). Diurnal lipid and mucus production in the staghorn coral Acropora acuminata. Mar. Biol. 60, 81-90. These means that any drawing any day/night relationship between the mucus coat and ion concentrations, is speculation based on unobserved behaviour at best. Having said that, the point of the paper was to show evidence of active transport (as opposed to passive diffusion) of elements to the inner layers of the coral. From the data, it looks like they succeeding in showing that. It also reiterates how little detail is really known about the detailed mechanisms of calcification in corals. Layton Quote Link to comment Share on other sites More sharing options...
lduncan Posted December 9, 2005 Report Share Posted December 9, 2005 I think mesocosm's biofilm threads are quite interesting too: http://zeovit.com/forums/showthread.php?t=4263 http://zeovit.com/forums/showthread.php?t=4230 Quote Link to comment Share on other sites More sharing options...
wasp Posted December 10, 2005 Author Report Share Posted December 10, 2005 Good one Layton. Any post by that Mesocosm guy is always worth a read! Some great talent at zeovit.com Quote Link to comment Share on other sites More sharing options...
lduncan Posted December 10, 2005 Report Share Posted December 10, 2005 Good one Layton. Any post by that Mesocosm guy is always worth a read! Some great talent at zeovit.com Just like RC though, you gotta wade through the crap to find it. Quote Link to comment Share on other sites More sharing options...
wasp Posted December 10, 2005 Author Report Share Posted December 10, 2005 Same on some of the threads here. Tell me about it........ :lol: Quote Link to comment Share on other sites More sharing options...
lduncan Posted December 10, 2005 Report Share Posted December 10, 2005 Your telling me! :lol: Quote Link to comment Share on other sites More sharing options...
Fay Posted December 10, 2005 Report Share Posted December 10, 2005 My god you guys agree on something Quote Link to comment Share on other sites More sharing options...
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