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Science, Inventions & Space Discuss Does Global Warming Make Food Less Nutritious? at the General Discussion; https://www.scientificamerican.com/a...ss-nutritious/ Earlier this year, Myers and his colleagues released the results of a six year study examining the nutritional content ...

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Old 01-01-2018, 02:43 PM
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Default Does Global Warming Make Food Less Nutritious?

https://www.scientificamerican.com/a...ss-nutritious/

Quote:
Earlier this year, Myers and his colleagues released the results of a six year study examining the nutritional content of crops exposed to levels of atmospheric carbon dioxide (CO2) that are expected to exist by mid-century. The conclusions were indeed troubling. They found that in wheat grains, zinc concentrations were down some 9.3 percent and iron concentrations were down by 5.1 percent across the seven different crop sites (in Australia, Japan and the U.S.) used in the study. The researchers also noted reduced protein levels in wheat and rice grains growing in the CO2-rich test environment.
Quote:
According to Myers, the findings—published in June 2014 in the peer-reviewed journal Nature—are particularly troubling when one considers that some of the two to three billion people around the world who depend on wheat and rice for most of their iron and zinc already might not be getting enough of these essential nutrients. Zinc deficiency, which can exacerbate pneumonia, malaria and other health problems, is already linked to some 800,000 deaths each year among children under five. Meanwhile, iron deficiency is the primary cause of anemia, a condition that contributes to one in five maternal deaths worldwide.

Quote:
Myers and company aren’t the only ones worried about global warming and nutrient losses. Another recent study by mathematical biologist Irakli Loladze analyzed data from thousands of “free-air CO2 enrichment experiments” on 130 different species of food plants and found that increased CO2 reduced overall mineral (nutrient) content across the board. “People don't need large quantities of the manganese or potassium they get from plants, but they do need some,” comments David Berreby on BigThink.com in response to Loladze’s findings. “And for billions of people, plants are their only source.”

Quote:
Berreby is also bothered by another of Loladze’s conclusions, that higher levels of CO2 also spur increases in starches and sugars in the same plants that lose mineral content. “In other words, with increases in atmospheric carbon dioxide, the valuable nutrients in these food crops are scarcer, and carbohydrates are more abundant—in effect, the nutrients are ‘diluted’,” he explains. This syncs with research out of the University of California at Davis, which estimates that the overall amount of protein we get from our food plants will drop some three percent in the coming decades given global warming’s expected arc.
Scientific American

And we thought it was GMO's that made our fruits and vegetables taste blah.
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https://www.bloomberg.com/view/artic...el-in-the-u-s-
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Old 01-01-2018, 04:27 PM
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Default Re: Does Global Warming Make Food Less Nutritious?

Quote:
Originally Posted by saltwn View Post
https://www.scientificamerican.com/a...ss-nutritious/










Scientific American

And we thought it was GMO's that made our fruits and vegetables taste blah.
I read your excerpt. It says nothing about taste.

From what I read, some people grew some plants in a greenhouse pumped full of carbon dioxide and concluded when plants get more of the gas they need to survive and the heat they need to put it all together somehow they don't do as well and therefore global warming/climate change bad.

Did I miss something?
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Old 01-01-2018, 04:36 PM
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Default Re: Does Global Warming Make Food Less Nutritious?

The crap some people will believe

Let me be the first to bust the myth,,,;

Green houses have been adding CO2 to their plants routinely for years.

Introduction

The benefits of carbon dioxide supplementation on plant growth and production within the greenhouse environment have been well understood for many years.

Carbon dioxide (CO2) is an essential component of photosynthesis (also called carbon assimilation). Photosynthesis is a chemical process that uses light energy to convert CO2 and water into sugars in green plants. These sugars are then used for growth within the plant, through respiration. The difference between the rate of photosynthesis and the rate of respiration is the basis for dry-matter accumulation (growth) in the plant. In greenhouse production the aim of all growers is to increase dry-matter content and economically optimize crop yield. CO2 increases productivity through improved plant growth and vigour. Some ways in which productivity is increased by CO2 include earlier flowering, higher fruit yields, reduced bud abortion in roses, improved stem strength and flower size. Growers should regard CO2 as a nutrient.

For the majority of greenhouse crops, net photosynthesis increases as CO2 levels increase from 340–1,000 ppm (parts per million). Most crops show that for any given level of photosynthetically active radiation (PAR), increasing the CO2 level to 1,000 ppm will increase the photosynthesis by about 50% over ambient CO2 levels. For some crops the economics may not warrant supplementing to 1,000 ppm CO2 at low light levels. For others such as tulips, and Easter lilies, no response has been observed.
Carbon Dioxide In Greenhouses

Here's a whole list ;
https://www.bing.com/search?q=CO2+ro...c=IE-SearchBox

I don't use it in my greenhouse because it connects to the house. If it didn't, if it was freestanding, I would pump what is used to heat the building back into the operation. As I learned to do back when I worked at a Truck farm greenhouse.

The natural carbon cycle is the process of using sunlight to lock CO2 into the plants for growth and later consumption. It is the only justification for experimenting with Algae and Biomass systems of sustainable carbon fuels.
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Old 01-01-2018, 04:56 PM
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Default Re: Does Global Warming Make Food Less Nutritious?

Quote:
Originally Posted by jimbo View Post
I read your excerpt. It says nothing about taste.

From what I read, some people grew some plants in a greenhouse pumped full of carbon dioxide and concluded when plants get more of the gas they need to survive and the heat they need to put it all together somehow they don't do as well and therefore global warming/climate change bad.

Did I miss something?
Sorry, heard that part on Newsy, looked for a link and posted but yes it also said affects flavor, which if you think about it makes sense if different "ingredients" (nutrients) are changed or eliminated.
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Republican pollster Frank Luntz quoted a report and said that 43 percent of immigrants from African countries have a bachelor’s degree or higher, compared with 33 percent of the American population overall.
“Nigerian-Americans, for instance, have a median household income well above the American average.”
https://www.bloomberg.com/view/artic...el-in-the-u-s-
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Old 01-01-2018, 04:58 PM
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Default Re: Does Global Warming Make Food Less Nutritious?

Quote:
Originally Posted by FrancSevin View Post
The crap some people will believe

Let me be the first to bust the myth,,,;

Green houses have been adding CO2 to their plants routinely for years.

Introduction

The benefits of carbon dioxide supplementation on plant growth and production within the greenhouse environment have been well understood for many years.

Carbon dioxide (CO2) is an essential component of photosynthesis (also called carbon assimilation). Photosynthesis is a chemical process that uses light energy to convert CO2 and water into sugars in green plants. These sugars are then used for growth within the plant, through respiration. The difference between the rate of photosynthesis and the rate of respiration is the basis for dry-matter accumulation (growth) in the plant. In greenhouse production the aim of all growers is to increase dry-matter content and economically optimize crop yield. CO2 increases productivity through improved plant growth and vigour. Some ways in which productivity is increased by CO2 include earlier flowering, higher fruit yields, reduced bud abortion in roses, improved stem strength and flower size. Growers should regard CO2 as a nutrient.

For the majority of greenhouse crops, net photosynthesis increases as CO2 levels increase from 340–1,000 ppm (parts per million). Most crops show that for any given level of photosynthetically active radiation (PAR), increasing the CO2 level to 1,000 ppm will increase the photosynthesis by about 50% over ambient CO2 levels. For some crops the economics may not warrant supplementing to 1,000 ppm CO2 at low light levels. For others such as tulips, and Easter lilies, no response has been observed.
Carbon Dioxide In Greenhouses

Here's a whole list ;
https://www.bing.com/search?q=CO2+ro...c=IE-SearchBox

I don't use it in my greenhouse because it connects to the house. If it didn't, if it was freestanding, I would pump what is used to heat the building back into the operation. As I learned to do back when I worked at a Truck farm greenhouse.

The natural carbon cycle is the process of using sunlight to lock CO2 into the plants for growth and later consumption. It is the only justification for experimenting with Algae and Biomass systems of sustainable carbon fuels.
yes, yes, frankly
we are talking about an over abundance.
more is not always better
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Republican pollster Frank Luntz quoted a report and said that 43 percent of immigrants from African countries have a bachelor’s degree or higher, compared with 33 percent of the American population overall.
“Nigerian-Americans, for instance, have a median household income well above the American average.”
https://www.bloomberg.com/view/artic...el-in-the-u-s-
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Old 01-01-2018, 05:00 PM
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Default Re: Does Global Warming Make Food Less Nutritious?

Quote:
Originally Posted by saltwn View Post
Sorry, heard that part on Newsy, looked for a link and posted but yes it also said affects flavor, which if you think about it makes sense if different "ingredients" (nutrients) are changed or eliminated.
We have had this argument for decades concerning the use of artificial fertilizers. Turns out not to be true.

Flavor is the result of growth medium, not source of carbon.




Quote:
Originally Posted by saltwn View Post
yes, yes, frankly
we are talking about an over abundance.
more is not always better
What????
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Old 01-01-2018, 05:03 PM
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Default Re: Does Global Warming Make Food Less Nutritious?

Quote:
Originally Posted by FrancSevin View Post
What????
If you said that outloud without the "H" sound, you probably meant one of these:






Turn it on.
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Republican pollster Frank Luntz quoted a report and said that 43 percent of immigrants from African countries have a bachelor’s degree or higher, compared with 33 percent of the American population overall.
“Nigerian-Americans, for instance, have a median household income well above the American average.”
https://www.bloomberg.com/view/artic...el-in-the-u-s-
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Old 01-01-2018, 05:24 PM
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Default Re: Does Global Warming Make Food Less Nutritious?

So again with the snarky remarks when you cannot answer the question.

Okay

But, I've never heard that an overabundance of food was a bad thing.

The World is cooling down. With virtually all the alarmist "humans are guilty" arguments proven false we find these sort or hair-brained attempts to continue the subject beyond reason.

So please, don't talk to me about the rather ingenious but laborious success of inventing the incandescent light bulb.

As predicted by many peer revued experts, the world is cooling down. Some even suggest a coming mini Ice Age. Best we develop some capabilities of "abundance"

http://weeklyworldnews.com/headlines...oming-ice-age/
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Old 01-01-2018, 05:47 PM
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Default Re: Does Global Warming Make Food Less Nutritious?

Quote:
Originally Posted by saltwn View Post
If you said that outloud without the "H" sound, you probably meant one of these:






Turn it on.
What????
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Old 01-01-2018, 07:52 PM
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Default Re: Does Global Warming Make Food Less Nutritious?

Quote:
Originally Posted by saltwn View Post
yes, yes, frankly
we are talking about an over abundance.
more is not always better
in this case it seems to be... better for plants Saltwn.
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