Anyone want to get really nerdy about coral growth read this

[Denver aquarist]

http://www.nature.com/srep/2013/130312/srep01421/full/srep01421.html#/f1

 

[Smiley]

Re: Anyone want to get really nerdy about coral growth read this

Excellent read! Thanks for sharing. However, reading this I did not notice anything mentioned about oxygen levels in the various temperatures they used. I will reread this after swimming practice. I am also curious about the various mineral levels which also contribute to coral growth. Did they dose? How big of water volume was used? I understand that this article only concentrates on temp but there is so much more that needs to be explained. I almost think I missed a page or 2.

I'm not a scientist by any means but with coral propagation as a main hobby, there are so many variables involved in getting maximum coral growth. I prefer myself to use colder water for increased oxygen, larger volumes for stability, and elevated minerals to avoid chances of starvation. Regular pruning also speeds growth.

Sent from my C771

 

[Cake_Boss]

Re: Anyone want to get really nerdy about coral growth read this

Widespread temperature stress has caused catastrophic coral bleaching events that have been devastating for coral reefs. Here, we evaluate whether coral fluorescence could be utilized as a noninvasive assessment for coral health. We conducted cold and heat stress treatments on the branching coral Acropora yongei, and found that green fluorescent protein (GFP) concentration and fluorescence decreased with declining coral health, prior to initiation of bleaching. Ultimately, cold-treated corals acclimated and GFP concentration and fluorescence recovered. In contrast, heat-treated corals eventually bleached but showed strong fluorescence despite reduced GFP concentration, likely resulting from the large reduction in shading from decreased dinoflagellate density. Consequently, GFP concentration and fluorescence showed distinct correlations in non-bleached and bleached corals. Green fluorescence was positively correlated with dinoflagellate photobiology, but its closest correlation was with coral growth suggesting that green fluorescence could be used as a physiological proxy for health in some corals.

I'm no genius, but I think he meant to put zooxanthellae instead of dinoflange throughout the whole article? Did I miss the whole point of the article? (It bothers me if I'm right, enough that I can't concentrate on what the article is about. Hopefully I missed the point entirely)

 

[djkms]

I'm no genius, but I think he meant to put zooxanthellae instead of dinoflange throughout the whole article? Did I miss the whole point of the article? (It bothers me if I'm right, enough that I can't concentrate on what the article is about. Hopefully I missed the point entirely)

Most zooxanthellae are dinoflagellates :
http://en.wikipedia.org/wiki/Symbiodinium

 

[Cake_Boss]

Re: Anyone want to get really nerdy about coral growth read this

That's why I like this place

 

[Vance]

The cold-treated corals appeared to acclimate to the temperature change by adjusting their photosynthetic efficiency and photoprotective pigments resulting in increased growth rates towards the end of the experiment[SUP]13[/SUP], which was also reflected with the observed recovery of GFP concentration and green fluorescence.

Great read, but what is this saying related to growth and ignoring fluorescence? Longterm cold exposure can increase growth or is it just the initial shock, such as what a tip pruning would do?

 

[Denver aquarist]

It doesn't just talks about how temperature has great effects on the Florescence of the corals, and if you watch the color change in the corals you can tell if they are happy or not.

 

[Vance]

[h=1]Anyone want to get really nerdy about coral growth read this[/h]

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