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There are several key ways in which rising atmospheric CO₂ concentrations will affect photosynthesis, and these are related to the different types of photosynthesis. In order to properly answer your question, I'll provide some background about photosynthesis itself. Photosynthesis evolved in a high-CO₂ atmosphere, before the oxygen-enrichment of the ...


15

I wanted to add a little more to the excellent answer above, especially since the OP asks about research into this question in a "real-world context". There is a substantial body of evidence on exactly this question that comes from experiments at "Free Air CO2 Enrichment" (FACE) sites. FACE is an experimental method/technology in which standing ecosystems ...


10

Disclaimer: the question is too broad and speculative to some extent, and thus less likely to get complete answer (at least in a single post). As is already known, thousands (or millions) of species are dependent on coral reefs for their survival and are likely to get extinct (unless they adapt) because of destruction of coral reefs. A short list includes ...


10

Yes they can, but their normal growth is somewhat impaired. A study by Bugbee and collaborators showed that while the yield of rice and wheat increases with CO2 up to about 0.1% CO2, yield decreases sharply as CO2 climbs from 0.1% to 0.25%. There is a smaller loss in yield as CO2 is further increased from 0.25% to 2%. One interesting thing to note about the ...


6

The answer to your question is in the first graph of the Wikipedia article you linked to: Great Oxygenation Event. In that graph, where time is measures in billions of years, you see that O2, as it was produced, was absorbed in oceans, seabed rock, land surfaces, and finally, about .85 billion years ago, O2 sinks filled and the gas accumulated in the ...


4

This article has a clear explanation (backed up by good links) of the effects of climate change on maple sap production, including the following: Maple trees produce the best sap on cool days preceded by freezing nights – the cold weather causes the sap in the tree to freeze, creating a low-pressure vacuum that draws more sap up from the roots. When ...


3

tl;dr We don't really know. A reasonable guess is that it's a weak sink, gradually turning into a source via increased drought frequency, but it's extremely hard to measure; carbon flux is highly variable both spatially and temporally (so it matters both when and where you measure), and it's difficult to make sure that you're accurately measuring all the ...


3

I don't think anyone knows for sure. It will certainly depend on which spatial location, and which tree species, you're thinking of: while "global average effect on growth (e.g. measured by change in net ecosystem exchange of forested ecosystems) of all tree species" is at least well-defined, it will be an average across an enormously variable set of ...


3

Making one change in an ecological system is much like eating one salted peanut. A: If you only assume a 12⁰ change (which is really large) then the net effect is not only warmer but dryer. Higher temperatures mean faster evaporation, faster transpiration. B: Warmer may also mean that some pest has a limiting factor removed. Look at the problem northern ...


3

Its really hard to say for any given field of flowers and its hard to separate temperature from so many other factors that are accompanying climate change. For example, rainfall is changing as well as CO₂ levels. The pH of the rain may change because CO₂ becomes a mild acid when its absorbed into water. The speed at which the seasonal temperatures vary ...


2

Too much nitrogen can run off during rain and collect in ponds, leading to eutriphication, find more here: https://en.wikipedia.org/wiki/Eutrophication It's probably also responsible for dead zones: https://en.wikipedia.org/wiki/Dead_zone_%28ecology%29 This is an important question because we've more than doubled the amount of bioavailable nitrogen on ...


2

This is a big idea that's gaining momentum in many people's minds across the world. This is a brief and probably inadequate survey and hopefully other answers / comments will fill out a better picture. Most of the plans to reclaim arid regions are not completely hands off. It seems that the current thinking is that if we waited for microbes and lichen to ...


2

Not exactly matching your question, but I think that the idea (from stochastic demography) that life histories should be buffered against environmental variability in influential vital rates (Pfister, 1998, Morris & Doak, 2004) can be related to this issue, even if it is mainly (originally) dealing with stationary environmental fluctuations. In general, ...


2

Althugh water vapor contributes to greenhouse warming of the atmosphere, changes in atmospheric water vapor tend to follow rather than drive changes in temperature. Also, in the form of clouds, atmospheric water can have a cooling effect on earth temperature. Clouds illustrate why water vapor, unlike carbon dioxide and methane, is not thought of as a driver ...


2

"Within-season variation" may be referring to one of two things (depending on the context): More commonly: the variation of a variable within a given season (i.e., between months or days within that season). Öst (1999) demonstrates an example of this use (in the context of breeding season). Less commonly: the variation of a variable between the same ...


1

bambara groundnut does not have a reference genome This is your biggest problem if you want to do any sequencing based analysis. Neither GWAS nor RNAseq data analysis are possible without a reference genome (or at least transcriptome). Depending on the availability, quality & similarity of reference genomes from related species it may however be ...


1

Plants do not need CO2 for survival. They need it just for photosynthesis; if you supply them with alternate carbon source such as glucose then they would survive (See here for non-CO2 Carbon-source utilization). There are non-photosynthetic plants which are totally dependent on carbon sources other than CO2; some are carnivorous like venus fly-trap. I am ...


1

Up to a certain point, adding nitrogen to soil will increase plant growth. However, too much nitrogen will "burn" plants- stunting root growth and making the plant more susceptible to diseases. Unfortunately, I don't know at exactly what threshold nitrogen becomes "too much"- I suppose it would vary depending on the plants.


1

Take a look at Paragraph 2. I'll outline it in more or less plain english (I hope). for 37 lakes they used this method: 1) they took a sample of water from 0.1 to 0.25 m below the surface. Using a thermos bottle. This would minimize change of the gas composition of the water with a change of temperature. The bottle was not sealed, but left out for a ...


1

Not my field but I have a couple of thoughts: According to your link, the blue line represents the change in the trend and the red bars are the temperatures. These have not remained that stable, it is the bar that gives that illusion: A much more important point are the grey bars extending above and below each year's value. This is the range of uncertainty,...


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