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#1
07-08-2009, 03:09 AM
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last place amongst the G8... Really - yet we still emit 10% of the US CO2 emmisions...
http://www.carbonplanet.com/country_emissions Yeah, but we forget how this work, CO2 acidifies the water, Calcium carbonate disolves, raising pH ... calcium reactor... Reefs have existed during periods where temperatures were much heigher, atmospheric CO2 much heigher... Lets keep things in perspective...
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#2
07-08-2009, 05:47 AM
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C'mon Andy, you're being lazy :P Pre-industrial Revolution, variable world oceanic pH was 8.0 to 8.3. Today's average variable oceanic pH is 7.9 to 8.2. That's over the course of 150 years. Prehistorical parallels took tens of thousands, if not millions of years. Acidic oceans are not unprecedented (late-Jurassic ~7.5), but the rate at which they are becoming so is. There's your perspective.
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This and that.
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#3
07-08-2009, 06:05 AM
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I've given up on climate change... I switched to CFL lights (actually putting me down one rung on the environmental ladder, since they contain toxic mercury and my power is all hydro), I don't drive a car, I buy organic and recycled materials (and recycle those that are worth recycling)... What more can I do?
I need to start breeding endangered species in my living room if I'm to be seen as helping (rather than hindering) these days...
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Calvin --- Planning a 29 gallon mixed reef...
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#4
07-08-2009, 06:14 AM
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This and that.
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#5
07-08-2009, 06:21 AM
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Andy, the last time rapid ocean acidification occured, there was a mass marine extinction. i think that's all the perspective anyone needs.
as for the calcium reactor point, you forget that reactors are used outside of systems and pH is still normal in the displays. If the pH is high in the display (the ocean in this case), any calcium carbonate that is formed will dissolve.
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#6
07-08-2009, 01:24 PM
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"We shall dive down through black abysses... and in that lair of the Deep Ones we shall dwell amidst wonder and glory forever." - H.P. Lovecraft Old 120gal Tank Journal New 225gal Tank Journal May 2010 TOTM The 10th Annual Prince George Reef Tank Tour Last edited by whatcaneyedo; 07-08-2009 at 01:27 PM.
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#7
07-08-2009, 02:42 PM
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Individual actions will not be enough. Governments and corperations need to make sustainable options the only options available. I applaud stores like Home Depot that now charge for bags.
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210 Gallon slowly gaining population. Foxface, Naso, Coral Beauty, 2 Clowns, 2 Chromis, Orange Anthias, and Striped Goby.
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#8
07-10-2009, 04:01 AM
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http://en.wikipedia.org/wiki/List_of...xide_emissions though I'm willing to bet I will be chided for using wikipedia as a reference. Still 2.3% of the world CO2 emmisions - if you actually assume these are real numbers - I still find these numbers to be amusing especially when compared to total CO2 emmisions & percentage of errors... Calcium reactor - it doesn't matter whether its within or external to the display - the chemical reaction is all that matters; you'd probably not be happy if you were to lower your display to a 7.? pH - to raise calcium levels... The chemical reaction still will occur no matter where its located. Albert - Lets talk over the eons not decades... The oceans pH, and atmospheric CO2 levels have changed radically - yet we don't live in a desolate lifeless world. There are numerous species of current corals that can be found back millions of years - if the changes since then haven't killed these species off...
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#9
07-10-2009, 04:43 AM
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Your forgetting the time it took for these changes to occur. The changes in atmospheric CO2 levels and ocean PH levels did not fluctuate this fast during the "radical changes" your speaking of. They were much more gradual...tens of thousands of years, not hundreds. The changes didn't kill off the species your speaking of because they didn't happen fast. Besides, I hope one day when I have kids, they can dive some of the spots around the world I have been lucky enough to visit and still see them in half decent condition. Diving in Australia was the most beautiful experience of my life and yet the local divers who had been in these spots for 30+ years would all tell you the reef was steadily heading downhill. Im not sure why your trying to defend rapidly declining reefs as ok or normal???
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#10
07-10-2009, 06:11 AM
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Since the manufacturing revolution, humans have been the single largest contributors of CO2 emissions by a long shot, something on the order of 150 times more than all the world's active volcanoes combined. The ocean has a natural process of buffering CO2 by circulating it into deeper waters, but this process takes thousands of years. For all intents and purposes, it is a dysfuctional process. As such, the order of magnitude to which the oceanic pH is changing here is unparalleled and, quite frankly, alarming. For sure, the fact that species will survive is irrelevant and a sellout opinion. You're right, things will survive, mostly seagrasses and algae lifeforms - the types of organisms that will benefit from an increase in dissolved CO2 and a decrease in spacial competition and predation. Anything that has to lay down a calcium based body structure is going to be severely retarded. Hardly what I'd call a comforting fact, nor an excuse for the world to decline vigilance at the call of duty.
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This and that.
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Hybrid Mode
