Science study reports that coccolithophores’ abundance has increased by an order of magnitude since 1960s, significantly changing ocean garden
Ocean Ecology Laboratory, Ocean Biology Processing Group NASA Goddard Space Center
Coccolithophores–tiny calcifying plants that are part of the foundation of the marine food web–have been increasing in relative abundance in the North Atlantic over the last 45 years, as carbon input into ocean waters has increased. Their relative abundance has increased 10 times, or by an order of magnitude, during this sampling period. This finding was diametrically opposed to what scientists had expected since coccolithophores make their plates out of calcium carbonate, which is becoming more difficult as the ocean becomes more acidic and pH is reduced.
These findings were reported in the November 26th edition of Science and based on analysis of nearly a half century of data collected by the long-running Sir Alister Hardy Foundation (SAHFOS) Continuous Plankton Recorder sampling program.
“The results show both the power of long-term time-series of ocean observations for deciphering how marine microbial communities are responding to climate change and offer evidence that the ocean garden is changing,” said Dr. William Balch, senior research scientist at Bigelow Laboratory for Ocean Sciences and a co-author of the paper. “We never expected to see the relative abundance of coccolithophores to increase 10 times in the North Atlantic over barely half a century. If anything, we expected that these sensitive calcifying algae would have decreased in the face of increasing ocean acidification (associated with increasing carbon dioxide entering the ocean from the burning of fossil-fuels). Instead, we see how these carbon-limited organisms appear to be using the extra carbon from CO2 to increase their relative abundance by an order of magnitude.
“This provides one example on how marine communities across an entire ocean basin are responding to increasing carbon dioxide levels. Such real-life examples of the impact of increasing CO2 on marine food webs are important to point out as the world comes together in Paris next week at the United Nations Conference on Climate Change,” Balch added.
“Something strange is happening here, and it’s happening much more quickly than we thought it should,” said Anand Gnanadesikan, associate professor in the Morton K. Blaustein Department of Earth and Planetary Sciences at Johns Hopkins and one of the study’s five authors.
Gnanadesikan said the Science report certainly is good news for creatures that eat coccolithophores, but it’s not clear what those are. “What is worrisome,” he said, “is that our result points out how little we know about how complex ecosystems function.” The result highlights the possibility of rapid ecosystem change, suggesting that prevalent models of how these systems respond to climate change may be too conservative, he said.
Coccolithophores are often referred to as “canaries in the coal mine.” Some of the key coccolithophore species can outcompete other classes of phytoplankton in warmer, more stratified and nutrient-poor waters (such as one might see in a warming ocean). Until this data proved otherwise, scientists thought that they would have more difficulties forming their calcite plates in a more acidic ocean. These results show that coccolithophores are able to use the higher concentration of carbon derived from CO2, combined with warmer temperatures, to increase their growth rate.
When the percentage of coccolithophores in the community goes up, the relative abundance of other groups will go down. The authors found that at local scales, the relative abundance of another important algal class, diatoms, had decreased over the 45 years of sampling.
The team’s analysis was of data taken from the North Atlantic Ocean and North Sea since the mid-1960s compiled by the Continuous Plankton Recorder survey. The CPR survey was launched by British marine biologist Sir Alister Hardy in the early 1930s. Today it is carried on by the Sir Alister Hardy Foundation for Ocean Sciences and is conducted by commercial ships trailing mechanical plankton-gathering gear through the water as they sail their regular routes. Dr. Willie Wilson, formerly a senior research scientist at Bigelow Laboratory, is now director of SAHFOS.
“In the geological record, coccolithophores have been typically more abundant during Earth’s warm interglacial and high CO2 periods. The results presented here are consistent with this and may portend, like the “canary in the coal mine,” where we are headed climatologically,” said Balch.
###
As with all cagw holy tenets, I’m sure someone will be able to spin this into worse than we thought.
It IS ….’worse than THEY thought’ !
“What is worrisome,” he said, “is that our result points out how little we know about how complex ecosystems function.”
THEY are slowly discovering nature looks after itself…. in its own timescale, without the help of ‘Green Zealots’ & THEY are redundant with no obvious reason for THEM to be here.
Something always has to be worse than they thought. They always need more money to investigate whatever is worrisome. They’ll never say, “10x faster growth is wonderful. Everybody stop worrying and be happy.”
“Everybody stop worrying and be happy.”
Least likely government message. Ever.
Time for the Mencken quote:
“The whole aim of practical politics is to keep the populace alarmed (and hence clamorous to be led to safety) by menacing it with an endless series of hobgoblins, all of them imaginary.”
The process is called photosynthesis, but don’t expect the climate change idiots to understand that process. Many commercial greenhouse growers use tanks of CO2 to enhance the growth rate of the plants that they grow and sell.
(+++)
Photosynthesis is exactly what the phylum of things we call plants does for a living – they make CO2 into carbon and oxygen. The fact they expand their population is exactly what would be expected as their food supply increases. The only thing having the opposite effect would be a lack of sunlight. Ne surprises here!
“The authors found that at local scales, the relative abundance of another important algal class, diatoms, had decreased over the 45 years of sampling.”
Aren’t they aware of natural seesaws that take place chaotically as in the predator-prey paradigm?
I think that the question here is:”where are they getting the calcium?”
NW sage November 27, 2015 at 5:15 pm
Photosynthesis is exactly what the phylum of things we call plants does for a living – they make CO2 into carbon and oxygen.
They certainly don’t, they make CO2 into carbohydrates, they make oxygen from water.
6 CO2 + 6 H20 –> C6H12O6 + 6 O2
Most of the O2 is coming from CO2
Tom Yoke, please don’t parade your ignorance about photosynthesis. ALL the oxygen comes from the splitting of H2O using energy obtained from sunlight. It is a complicated multi step process.
The equation could be better written as 6CO2 + 12 H2O –> C6H12O6 + 6O2 + 6H2O but it would be silly to write it like that.
The great thing about the Climate doomsday cult is that it provides a very flexible narrative for its believers. Here, they just need to make a slight modification to the prior talking point. The original talking point was “mass extinction of Cocolithphores, brought on by climate change, threatens the foundation of the marine food web”. Gosh, that sounds bad.
This will now become: “Explosion of invasive Coccolithophores, brought on my climate change, threaten the the foundation of the marine food web” Gosh, that sounds bad.
You missed the point… they can head-line “Climate Change catastrophe! Due to increasing CO2 Coccolithophores are dying at are rate 10 times that of 50 years ago!” – neglecting to mention of course that there are 10 times as many to begin with!
maybe I should apply for a script writing position….
don’t give them ideas
I love the way they concluded that the coccolithophores were not responding as they “should”.
Not, “as we thought they would”.
The ego of these guys is breath taking.
Does it mean that the science isnt settled?
Of course it is worse than we thought. We just don’t know. How bad is that?
“is becoming more difficult” Is it?
Yes that’s right. The biosphere should have been destroyed millions of years ago based on ASSUMPTIONS. And so there is ”climate science’. Assumptions are the mother of all fvckups. Hours, days, seasons or what???
If I’m not mistaken, Calcium Carbonate requires the availability of Carbon, which would accompany the solution of more CO2 in the ocean water.
So CO2 would in that sense seem a plus.
Maybe those ” coccolithophores ” are more interested in having carbon available than they care about pH.
Imagine (if you will) a cubic meter of ordinary sea water; maybe a one square meter cylinder one meter deep, in an insulated tub, inside a large room containing ordinary air, and temperature stabilized to say 25 deg. C or 77 deg. F something like an oceanic temperature. The whole room is temperature stabilized to be 77 deg. F so there are NO temperature gradients.
Now I suppose given time, it would become 100% relative humidity in that room; but we will maintain one meter depth of water after a steady state is reached, with no further evaporation.
We will also allow CO2 addition to the room to compensate the atmosphere for the loss of CO2 into that sea water, per Henry’s law, so that eventually, the CO2 in the water will reach an equilibrium value also.
So now we can measure the Henry’s law equilibrium level of CO2 in 25 deg. C sea water.
So now we want to activate some cooling coils surrounding the water cylinder, which is thermally insulated from the room air, which must remain at 25 deg. C.
What we want the cooling coils to do is to maintain the surface Temperature still at precisely 25 deg. C but we want to cool the bottom at one meter depth. Let’s go for a one degree C cooling at the bottom, and a linear temperature gradient of one deg. C per meter. (just to have a number). We now will have a surface to bottom heat flow, so the coils at the surface must supply that heat, so as to not upset the surface air water boundary temperature.
It might also be a good idea to actually separate the water air interface, with say a thin Mylar film so that there no longer can be an exchange of molecules between water and air.
So now we have a volume of water with a one deg. C per meter temperature gradient, and a surface CO2 concentration at the Henry’s law equilibrium value, that initially is that value all the way to the bottom.
Well now you have a problem. The CO2 molecules are moving about however they do in sea water, randomly diffusing in all directions. But now we have colder water under the surface water, and that colder water, is capable of holding a slightly higher amount of dissolved CO2 under Henry’s law.
So more CO2 molecules will move downward from hot to cold, than move upward from cold to hot.
Eventually we will have a CO2 concentration gradient (in whatever form CO2 wants to exist in sea water), and the colder bottom water will contain a higher CO2 concentration, and the surface layer will be CO2 depleted below its Henry’s law value.
If we now remove the Mylar film and reconnect the air water interface, the depleted surface water, will now accept more CO2 from the atmosphere, and the concentration gradient due to the temperature gradient, will pump that added CO2 towards the bottom, until eventually the surface CO2 comes into balance.
If the water depth were much greater, and the Temperature gradient was maintained down to a greater depth, as in the real ocean, we can see that in fact the ocean is continually pumping CO2 down to the depths, and depleting the surce CO2 below the Henry’s law value.
Now suppose that the atmosphere is returning LWIR radiation energy to the surface water, and raising the Temperature of the very surface layer.
This off course would enhance surface evaporation of water, and energy escape, but the raised surface layer temperature will further lower the surface CO2 by depletion from below by the water Temperature gradient.
So under a steady state temperature condition, the water surface will be a little warmer that the main body of the water, which also has a temperature gradient going down with depth, and the surface film will be depleted in CO2 over the expected value at that AIR temperature; and there still will be a net pumping of CO2 out of the atmosphere into the lower depths of the cooler ocean water.
Now during the daylight hours, the ocean will be absorbing short wave solar energy at various depths, and so the ocean will warm at those belwo surface depths,
But because of the surface depletion of CO2, by the downward pump, the surface CO2 will not rise back up to the Henrys law saturation level at which the ocean would outgas CO2 back into the atmosphere.
Well of course, all those numbers will rattle around and reach a consistent set; but the end result is that the atmosphere ocean interface does not reach some static CO2 transport condition equally in both directions for that Temperature; but is continually pumping CO2 from the atmosphere into the deeper colder waters, from which those delightful cocolithophores can extract their calcium carbonate skeletons.
The ocean is a much more efficient absorber of CO2 that it pumps to the depths, than it is as an outgasser of CO2 at warmer temperatures, because the constant pumping action keeps the surface film always depleted in CO2 from the Henry’s law value, so small temperature increases do not result in immediate reversal of the CO2 flow.
That is why if all excess man made CO2 emissions were to cease, the ocean can go on pumping CO2 until all of that excess is gone.
And that is why I do not believe the so-called Bern model of residence time.
Ocean uptake seems to me to be one of the biggest if not the biggest contributor to the rapid drop of 6ppm of CO2 in five months in the ML CO2 numbers.
Whatever it is that drives the CO2 up 6-7 ppm in the subsequent seven months of the year, it is NOT shutting off the ocean uptake system, which operates pretty much the same 12 months of the year in the tropical and temperate oceans.
So I don’t believe any 1,000 year or even a 40 year ” residence time ” for CO2 in the atmosphere.
g
“Something strange is happening here” “What is worrisome is that our result points out how little we know about how complex ecosystems function.”
Well, who’d have thunk it? So, they are utterly clueless as to how the carbon (or indeed any other) cycle works in the oceans. Buy, hey, CO2 induced global warming is a disaster and we must reconstruct the entire world economy with taxes and multi-$bn green projects as a result.
All sounds logical to me!
The take away on ariches lIke this….wow, we were wrong about X, Y and Z, illustrating we haven’t the foggiest idea of how a million and one things that affect the climate really work, but doggone it our models showing we’re all going to roast to death by (pick a year far enough in the future where you’ll be dead and gone) are RIGHT AND UNASSAILABLE because consensus. So shut up and give us your money, we’ve got a planet to “save”.
Of course, it never occurred to the authors of this paper that there has been no ocean acidification whatsoever and the only place it can be found is in alarmist speculation.
The warmist position is nothing but speculation canonized by the IPCC all of which is all predicated on a linearization error made back in the very first IPCC technical report. The error is justifying the sensitivity as degrees per W/m^2 by claiming that it’s linear over a range, which of course is true, except that the average is a slope dictate by Stefan-Boltzmann and not a slope passing through zero.
http://www.palisad.com/co2/tp/fig1.png
The 20K little dots are the monthly average emissions of the planet vs. average surface temperature for constant latitude slices of the planet. The larger dots are the average across all 3 decade of weather satellite data used to produce this (ISCCP data from GISS). The green line is the ideal behavior of a gray body whose emissivity is 0.62. The green and magenta lines bound the sensitivity per Stefan-Boltzmann and the blue line is the sensitivity claimed by the IPCC. If the behavior of an unknown system is that of an ideal gray body, what can justify a sensitivity many times larger than the gray body its behaving like?
The error was ignored because the result fit the requirements for establishing the IPCC which by becoming the arbiter of what is and what is not climate science will never get this right, because to do so undermines their reason to exist.
Painful as I near retirement to watch “climate scientists” insist on rediscovering the wheel when it comes to geochemistry.
‘Coccolithophores are often referred to as “canaries in the coal mine.”’
—
Yes, I can hear them sing:
So long sad times
Go long bad times
We are rid of you at last
…
The skies above are clear again
So let’s sing a song of cheer again
Happy days are here again
…
I prefer:
We’re Having a Heat Wave,
A Tropical Heat Wave.
The Temperature’s Rising.
It Is Surprising.
She Certainly Can
Can-Can.
Time to stop picking on canaries and coal mines – sooo last millennium. How about:
– a solar panel at night
– a wind turbine on a still day
– a raptor in a wind farm
Anyhow, it seems that these plants favour neutral ph conditions, or warmer water, or more sun. I wonder which one it is?
As if we didn’t already have enough life on this poor, overburdened rock.
priceless
Oh noes! “Rapid ecosystem change”! We’re doomed!
I have some questions:
Since the 1960’s, how much have the Oceans warmed?
Since the 1960’s, how much have the Oceans ph level changed?
And, in both cases, has it been a consistent change or more of a cyclic one?
Just wondering how those answers will fit in with the “canary” coccolithophores increase.
Why are they surprised? Have they not seen the White Cliffs of Dover and thought about what might have caused the increase in coccolithophores in the Cretaceous??
I think their paper got muddled up with a fifth grader’s essay.
“Have they not seen the White Cliffs of Dover and thought about what might have caused the increase in coccolithophores in the Cretaceous?”
Oh, hell no! One of the key tenets of warmista buffoonery is that every single one of the jackass alarmists have to be completely free of the burdens of prior knowledge.
In particular, being 100% ignorant of Earth history seems necessary to secure a government grant to study anything related to so-called climate science.
Actual scientific knowledge is verboten, as this would tend to introduce an element of realism which invariably proves fatal to alarmist notions.
Facts are very inconvenient things when you are trying to sell end-of-the-world apocalyptic fantasies.
They don’t have a clue what’s happening. They just “know” it’s bad, which is good news (how convenient) for the upcoming Climate Jamboree.
Climate Scamboree.
Climate Shamboree.
What is the measured change in pH in N. Atlantic in the study period? What is its variability, and what measurement errors are they admitting? And what is the species mix now, and 45 years ago? The N. Atlantic’s a very big place. Is this 45% increase general, local, averaged? Is it a gradual increase or are there spurts and fallbacks?There’s an awful lot of questions to be asked before any conclusions. Is there a link?
If they can’t get that right I suppose we shouldn’t be surprised that evolution is a new concept to these boffins.
Beat me to it.
First, the press release has Dr. William Balch saying: We never expected to see the relative abundance of coccolithophores to increase 10 times in the North Atlantic over barely half a century. If anything, we expected that these sensitive calcifying algae would have decreased in the face of increasing ocean acidification (associated with increasing carbon dioxide entering the ocean from the burning of fossil-fuels).
Then it quotes him as saying In the geological record, coccolithophores have been typically more abundant during Earth’s warm interglacial and high CO2 periods. The results presented here are consistent with this and may portend, like the “canary in the coal mine,” where we are headed climatologically.
So which is it? If abundance of coccolithophores is typical of high CO2 periods, why did they expect coccolithophores to decrease due to “ocean acidification.” Pretzel logic to maintain consistency with alarmist rhetoric. Whatever it is, it’s worse than we thought! Prevalent models may be too conservative!
+1
Was just about to write the same. Either it was “unexpected” or it wasn’t…can’t be both.
Well spotted.
I assume this is just the money talk to emphasize
* We’re in faith
* We need more money
* We found something that can be interpreted as ‘global warming’ and be used in the Paris summit
* We actually are not so surprised, but we like present our study as so
* Any change is climate change is global warming is anthropogenic gw is dagw is cagw.
Expected by those with understanding of ocean geochemistry, unexpected by climate scientists working with poor understanding and preconceived notions.
Katherine:
I’m with Eric H. I had copied the same phrases to use in my comment, but you’ve stated it so well.
What commentary I can add to your and Eric’s comments is:
A clear example of confirmation bias research where the results do not matter, the end results are always dire.
So dire that now these happily abundant coccolithophores will provide an example for discussion at Paris in December.
They should post a cautionary sign, ‘weasels at work’ wherever they work. So science or objectivity is safe around them!
Don’t let them start with the food chain thingy, the’ll start whaling about over fishing next.
“the’ll start whaling about over fishing next.”
I see what you did there, clever.
Weeping & Whaling & Rehashing Belief.
[Ouch. 8>) .mod]
That contradiction comes when belief is contradicted by evidence.
Orwell understood the human nature of that collision with his coining term Doublethink.
The paper’s authors had bought into the political propaganda (that warming oceans, higher CO2 would damage cocolithophores), while their expert knowledge of paleo records contradicted the former, yet they accepted both could be true until forced to reconcile the doublethink.
Climate change propaganda has polluted so much of biology and ecology that much of science’s public respect will be sorely damaged when the Climate Change scam collapses.
It could also be that by genuflecting before the alter of alarm, his study becomes politically acceptable. Play the game for the team and score for the oposition at the same time.
Charts from a couple studies,
Jones, B.M. et al. 2013 – two tanks of algae at different CO2 levels. They are sensitive to CO2, but in the wrong way to support CAGW.
http://www.rockyhigh66.org/stuff/acid_coccolith4.png
Iglesias-Rodriguez et al. 2008 – core samples of Emiliana huxleyi
http://www.rockyhigh66.org/stuff/acid4.png
Emiliana huxleyi are also useful in establishing paleo sea surface temperatures as far back as the Cretaceous. They reside in the sunny surface layer and produce alkenones, with unsaturation levels that vary with temperature. The unsaturation ratio doesn’t change as they die and get buried in the sea sediment.
I believe that there was NO Mauna Loa CO2 data, prior to the IGY of 1957/58.
So why do you show ML “data” back to 1780 ??
g
Ah, but that’s natural CO2 and is much better for the environment (or something).
Why Katherine, do these chaps say ” they never expected ” this or that ?
Why can’t they tell the truth, and say that ” they expected something else ” as dictated by their pre-conceived ideas ??
An honest scientist would say; “let’s look and see what we find. ”
g
On the one hand:
“If anything, we expected that these sensitive calcifying algae would have decreased in the face of increasing ocean acidification (associated with increasing carbon dioxide entering the ocean from the burning of fossil-fuels).”
On the other hand:
“In the geological record, coccolithophores have been typically more abundant during Earth’s warm interglacial and high CO2 periods.”
They suspected something that historically has done well during warm high CO2 conditions would die off in warm high CO2 conditions? Why would they think that?
The cargo cult science practiced by climate change purveyors is very strongly influenced by the IPCC agenda and not so much by logic. This 45 year study shows once again that computer projections based on incorrect assumptions (in this case that decreasing alkalinity will inhibit the ability of ocean dwelling lifeforms to create shells) typically mean that such projections are GO; from the second half of GIGO.
Because they know that higher CO2 will not lead to warming?
“What is worrisome,” he said, “is that our result points out how little we know about how complex ecosystems function.” according to one of the authors Anand Gnanadesikan. It is therefore amazing the level of knowledge of our environmentalists and climatologists and of course their models driving political decisions.
I’ve been worrying about how little they know for some time.
+1000 You got that right!
LOL.
The crux of the biscuit.
They just said, ‘I don’t know nothink, officer.’
…but vee have vays…
Ronald Reagan remarked that it was not what his opponents did not know that bothered him but how much stuff they knew that just wasn’t so. Same people, same problem.
I see I’m slow to post.
Agree, on your first post as well.
http://www.principia-scientific.org/study-acid-in-oceans-not-so-harmful-to-coral.html
Talk about doublespeek. Let’s see… “coccolithophores’ abundance has increased by an order of magnitude since 1960s”, but it is becoming more difficult for them to make their plates? These guys should really go back to K-12 to learn how to think and organize their thoughts. Then they follow it with: “In the geological record, coccolithophores have been typically more abundant during Earth’s warm interglacial and high CO2 periods.”
I presume the canary was supposed to die, not flourish?
Are Coccolithophores good food source at the bottom of the food chain
How is this not a good news story?
The canary alert system is well known, but very few are aware that it is able to detect both deterioration in the situation and improvement.
Certainly, when the live canary keels over dead, it is clearly unsafe, but when dead canaries come back to life it is cause for optimism.
This latter phenomenon occurs as frequently in Cagw papers as it does in Welsh mines.
It’s just sleeping.
It’s resting.
It’s pining for the fjords.
The “Black Knight” is my favourite analogy. But how many limbs does the Co2 driven Black Knight have, for crying out loud?
The canary alert system analogy to phytoplankton would seem inappropriate to me.
I would argue that because ocean plankton ecology has evolved under a billion years of climate change pressures far beyond the meager changes of our gentle holocene-anthropocene changes, phytoplankton are selected for resilience, I.e. they have robustness in available adaptations the face of environmental perturbations.
A canary in a coal mine is of course not in an environment in which it has evolved for survival. Canaries were used as air quality monitors precisely because they were sensitive to deteriorating air quality before the human miners became physiologically aware of that decline. In otherwords, a canary (due to the fast metabolism and small body size) is not robust to sudden changes in air quality perturbations, thus the canary lying motionless on the cage floor was an immediate sign the miners had obey or die themselves.
Thus the state of phytoplankton, able to adapt and thrive under large perturbations is not a good indicator of any real damage that might occur under higher levels of atmospheric CO2. (Doubt there is any damage that higher CO2 could cause until levels climb substanially higher than 1200ppm.)
The same way that CO2 fertilization of land plants is causing an explosive growth in agricultural yields all over the world, and yet CO2 is taken as a given to be a dire circumstance for the prospects of feeding a hungry world.
in other words, only in the fantasyland minds of people who really are not very smart and have not much clue about how things actually work.
We can use all the plankton we can get. The Japanese will find some way to make food out of it.
Probably tastes like chicken too.
G
I note there was an ad for “prefabricated data centres” – seems very apt!
They’re in great demand!
Can I get one that prefabricates a lower income at tax season?
Well known for a long time.
http://www.nature.com/nature/journal/v361/n6409/abs/361249a0.html
And having a direct bearing on the question of ocean sinks as phytoplankton photosynthesis (and respiration) are exempt from Henry’s law.
How much this affects the airborne fraction of CO2?
Unknown. The IPCC Carbon cycle estimates total marine biota biomass at only 3 Gt, yet shows annual fluxes in and out from the mixed layer at 50 and 37 Gt respectively.
Lotta work from not much biomass. something like 15 Gt production/Gt standing stock or reservoir size. Contrast that with land vegetation which can manage only .2Gt production or flux/Gt standing stock.
Let’s say there is a good chance marine biomass is underestimated. The IPCC shows no flux between marine biota and the atmosphere, yet everyone knows these blooms are right on the surface and may be absorbing atmospheric CO2 directly.
Certainly they modulate ocean surface pCO2 as regards applying Henry’s law to ocean atmosphere exchange.
Much to learn
Heh, the ‘missing heat’ may well be in the deep, silted, not convected or diffused.
==================
gymnosperm: Reply to your 10AM
Hugs might be interested
The “ocean” part of the diagram (from AR5 WG1 Figures) needs a little discussion.
My understanding (so far) is –
The LH box refers to total carbonate species (1st approx: bicarbonate), passively transported in seawater. Down and Up are geographically well-separated, so the diagram as-is may mislead. CO2(aq) is around 1/30th of total.
Settling solids comprise biomass (2) and limestone skeletons of phytoplankton (I assume the unlabelled 11). Biodegradation of biomass at depth regenerates CO2(aq), which redissolves the limestone. Total 13 down vs nett 11 up is a loose end.
Two units of bicarbonate produce one each of limestone and CO2(aq). So, biomass settling reduces surface CO2(aq), and limestone settling increases it. On the diagram numbers, phytoplankton appear nett *producers* of 9 GtC/yr as CO2(aq) – ultimately compensated by the upwelled return (probably elsewhere). I’d expect large local variation, as 28 biomass + 11 limestone skeleton for growth consumes nett 17 CO2(aq).
The near-surface exchanges can be understood as total CO2(aq) return (37) comprising 11 from limestone formation and 26 from biodegradation, total 28 biomass formation, and supply of this plus 11×2 = 22 total carbonates giving the 50 indicated. In this, CO2(aq) appears in both streams; as consumption/release are closely associated, including only the nett would be better. This wasn’t done, so my reading may be incomplete.
This suggests 9 Gt/yr per Gt stock rather than your 15 – still high turnover.
Gobsmacking statements of the obvious, or is it misdirection? coccolithophores go up by an order of magnitude and the ‘relative’ abundance of diatoms goes down. Well no kidding. This implies falsely that the absolute diatom abundance is going down, or at least the casual reader (journalist?) will infer that result.
I didn’t notice that, it is a real sleight of hand isn’t it.
Diatoms have silica skeletons … no?
You know some other life form with a silica skeleton ?? You been watching too much Star Trek.
g
Just shows yet again how little is known about carbon sinks and feedback effects from more plant food in the air.
The biological removal of so much carbon from the upper ocean to make calcium carbonate is a negative feedback, causing expected reduction in alkalinity not to occur.
Also, coccolithophores tend to dwell where other planktonic groups don’t, so there should be little effect on diatoms, etc.
PS:
Pardon my pedantry, but coccolithophores are not technically plants, but algae.
Some algae are technically plants.
Those in the phyla chlorophyta and charophyta, specifically.
Just sayin’.
Algae are very diverse group, and include many unrelated groups of eukaryotes.
It is thus not a formal term, but more of a generalization.
We eat both; and animules too !
g
Algae is just like sea weed, only cocolithophores are much smaller.
Increased carbon dioxide enhances plankton growth, opposite of what was expected
So, the most important life form on the planet likes more CO2? Who could have guessed? (/snark)
On another thread people were wondering where the “extra” CO2 might be going to. I mentioned perhaps it was cooling oceans — but looks like what was in the oceans may be using all the “extra” CO2 and using it for good things.
~Mark
Obviously, since these tiny critters evolved when the CO2 levels were tremendously higher than today, many millions and millions of years ago…they love this stuff. They want this stuff. Yummy.
Coccolithophores compete poorly with other phytoplankton which is why they thrive in nutrient-poor regions where other phytoplankton do not survive. Consequently a substantial increase in coccolithophores implies an increase in nutrient-poor habitats.
coccolithophores make their plates out of calcium carbonate, which is becoming more difficult as the ocean becomes more acidic and pH is reduced…..
No, it becomes easier….
Yea, I’m kinda flabbergasted by this statement. Didn’t they know the limiting factor is CO2, not Ca?
carbon
These people are completely ignorant of the ability of living organisms to adapt to changes in environmental conditions. In particular, they seem to always blithely assume that any change is automatically bad, that all organism are as limited in their abilities as the people doing the assuming are in their thinking, and also seem not to understand the first thing about homeostatic mechanisms.
Gee, a living creature who thrives when it’s food becomes more abundant. I wonder what the next paradigm shaking “discovery” will be? GK
Menicholas at 11:28 am.
O thought this was a good article on Joanne Nova’s site…Life Copes
http://joannenova.com.au/2015/11/life-copes-the-horses-that-adapted-to-massive-climate-change-in-just-800-years/
Epigenetics.
Turns out Lamarck may have not been so wrong as everyone thought for a while there.
Apart from using the scare words “ocean acidification”, eleventy!!!!, one would think this should raise some eyebrows, ““In the geological record, coccolithophores have been typically more abundant during Earth’s warm interglacial and high CO2 periods.”
Weren’t we told that CO2 is at it’s highest level, evah!
Yet, here we are in a warm interglacial with elevated CO2, one of many I might add, as professed by the researchers.
It has been shown unequivocally that CO2 lags warmth so, where is the connection to human generated CO2?
The only thing being “generated” here are more grants to study the “problem”.