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#201
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In article ,
Go study 'feedback loops', Lloyd. Fred, I don't know how to make this any simpler: If plants can absorb all the added CO2, they would be doing so now. They're not. Lloyd. for someone who claims to be a scientist, you really are too fond of talking about things you know nothing about. The plants absorb more carbon in an environment with a higher concentration of it. thus an increase in the carbon released into the atmosphere generates a LAGGING acceleration of plant growth, with the attendent co2 removal. Lagging? In 150 years of CO2 emissions, the CO2 is rising, fairly linearly. Yes. Linearly. But emission increase at accelarating rate. This proves that at higher CO2 partial pressure, the rate of co2 removal from athmosphere increases. There is absolutely no evidence plants will ever absorb enough to bring this back down to where it was 150 years ago. Plants will remove co2 from air until they starve, unless humans or nature add some co2 in to the athmosphere. The starvation partial pressure is about 280 ppm. If you go below that, ultimately plants die, and stop consuming co2. The concentration increases, typically with a little overshoot, and then returns to an equilibrium value higher than the original value. So plants cannot absorb all the added CO2. Sure they can. This is assuming a constant addition, we are unlikely to see the co2 level in the atmosphere level off until after we stop releasing it at an ever-accelerating rate. To put it another way, plants are not telepathic, they cannot respond before the stimulus. |
#202
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On Fri, 24 Mar 2006 18:13:09 +0200, in a place far, far away, Jotuni
made the phosphor on my monitor glow in such a way as to indicate that: Go study 'feedback loops', Lloyd. Fred, I don't know how to make this any simpler: If plants can absorb all the added CO2, they would be doing so now. They're not. Lloyd. for someone who claims to be a scientist, you really are too fond of talking about things you know nothing about. Yes, I suspect that Lloyd gets his botanical biology knowledge from the DNC talking points faxes, like he does everything else. |
#203
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#204
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#205
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#206
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![]() Fred J. McCall wrote: (Lloyd Parker) wrote: :Then why hasn't the current level caused accelerated plant growth and kept the :level from growing? Then why doesn't the rate of growth of the 'current level' correlate to human output? As someone just pointed out, plant growth IS accelerating. Why's that happening and do you seriously think it has no effect? Carbon-Di-Oxide has Carbon and Oxygen. Photosynthesis makes this into Carbo-Hydrates with the addition of water Di-Hydrogen-Oxide (H2O). Technically it makes glucose, sugar. Sugar is not in short supply in plants. Most plant fibers, cotton and wood for example, is cellulose and lignins, both made from sugar and water. Without Nitrogen for DNA/RNA, vitamins, hormones, enzymes, proteins, suger just bulks up a plant without giving it essential nutrients. Without Phosporus, making CAMP, BTP and ATP, living cells have no energy. Bulking up mass is not the same as fertilizing. Force-feeding sugars to plants by excess abundance skews the ratios of carbs to nutrients. Just like one out of fat NYC people is diabetic from sugar overload, so is nature being foorcefed a sugar overload. Carb laden plants are more attractive to pests. The predators get a fast sugar energy fix and can replicate at rates faster than the plants can deter them. The nutrients required for complex chemicals to make pesticide toxins and repellant tastes or odors are diluted by the sugars. Carbo-heavy plants are no cause for celebration -- you are accelorating the clallopse of the ecosystems by force feeding you filty tailpipes to nature. The sugar-rich carbo-heavy plant mass is reduced faster as well by soil bacteria. The sequestration may be as short as a few months and the CO2 is back in the air again. A person as ignorant of basic biology, biochemistry and ecology ought not be speaking up at science groups. You should restrain yourself to filling the holes in your knowledge by humbly asking questions. |
#207
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To paraphrase - "increased plant growth will absorb all the excess CO2
so global warming won't be a problem". I'd like to see some links and cites to/of scientific studies showing this to be true. Same for the claim that future coal seams are being laid down and this form of natural sequestering of CO2 is actually taking place on a scale significant enough to bring down atmospheric levels of CO2. Meanwhile those levels are continuing to rise and the rate of increase is itself increasing. Clearing of forests goes on, with these eliminated sinks releasing yet more CO2. Where is all this extra plant growth occurring? Sure there are gaps in Climate science's konowlidge but they aren't gaping chasms anymore. Sorry but I find this excessive focus on a single element of a complex system without citing any credible, reputable sources to be unconvincing and more like a diversion from the solid work done within a framework of scientific bodies that have long histories of finding out how things really work. |
#208
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To paraphrase - "increased plant growth will absorb all the excess CO2
so global warming won't be a problem". I'd like to see some links and cites to/of scientific studies showing this to be true. Same for the claim that future coal seams are being laid down and this form of natural sequestering of CO2 is actually taking place on a scale significant enough to bring down atmospheric levels of CO2. Meanwhile those levels are continuing to rise and the rate of increase is itself increasing. Clearing of forests goes on, with these eliminated sinks releasing yet more CO2. Where is all this extra plant growth occurring? Sure there are gaps in Climate science's konowlidge but they aren't gaping chasms anymore. Sorry but I find this excessive focus on a single element of a complex system without citing any credible, reputable sources to be unconvincing and more like a diversion from the solid work done within a framework of scientific bodies that have long histories of finding out how things really work. Ken |
#209
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![]() "Dave Head" wrote in message Once upon a time vast forests decomposed and left behind what are now coal seams. This mechansim will have to happen again if the plants are going to be able to clense the earth of the excess CO2 that exists in the air at present. Insufficeint time remains at existing rates of CO2 production. |
#210
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![]() "bill" wrote The plants absorb more carbon in an environment with a higher concentration of it. thus an increase in the carbon released into the atmosphere generates a LAGGING acceleration of plant growth, with the attendent co2 removal. It's nto a question of delay, but how rapid the response. Individual plants respond immediately to additional CO2 of course They respond in real time. Add more CO2 and you will slightly increase their rate of uptake. This has all been measured in the lab. Now if your position is tha through some generational process individual plants will obsorb more CO2 than their parents, then you are not talking science but Lemarkism which has been long discredited as bunk. The entire biosphere on the other hand can have a longer delay associated iwth it, and that delay has been measured as well. It's something around 8 years. Long enough for temporate forests to reach semi-maturity. "bill" wrote The concentration increases, typically with a little overshoot, and then returns to an equilibrium value higher than the original value. This is assuming a constant addition, we are unlikely to see the co2 level in the atmosphere level off until after we stop releasing it at an ever-accelerating rate. No, what you would see with a constant rate of emission is a cycloid chase function approximating an inverse exponential. The curve of concentration would have a limiting concentration and approach it as a limit. However, emission rates are not static, and the biosphere is not capable of the rate of uptake required to counter the existing rates of emission. With the kown relaxation time, the biosphere would already be uptaking virtually all of the emissions. |
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