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Author Topic: Climate change, the ocean, agriculture, and FOOD  (Read 471369 times)

vox_mundi

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Re: Climate change, the ocean, agriculture, and FOOD
« Reply #1750 on: August 12, 2019, 05:04:45 PM »
Scientists Warn of Too Many Pink Salmon in North Pacific
https://phys.org/news/2019-08-scientists-pink-salmon-north-pacific.html

Pink salmon are wildly abundant in odd-number years and less abundant in even-number years. They comprise nearly 70 percent of what's now the largest number of salmon populating the North Pacific since last century.

But an increasing number of marine researchers say the voracious eaters are thriving at the expense of higher-value sockeye salmon, seabirds and other species with whom their diet overlaps.

In addition to the flourishing wild populations of pink salmon, Alaska hatcheries release 1.8 billion pink salmon fry annually. And hatcheries in Asian countries contribute an additional 3 billion-plus fish.

"We're putting too many mouths to compete with the wild fish out there," says Nancy Hillstrand, owner of a fish processing company near Homer, Alaska, who has been lobbying Alaska wildlife authorities to reduce hatchery output.

A 2018 study estimated 665 million adult salmon in the North Pacific. Pink salmon dominated at 67%, followed by chums at 20% and sockeye at 13%. Salmon abundance since the late 1970s has been enhanced by favorable ocean conditions but hatcheries account for 15% of the pinks, 60% of the chums and 4% of the sockeyes.
“There are three classes of people: those who see. Those who see when they are shown. Those who do not see.” ― Leonardo da Vinci

Insensible before the wave so soon released by callous fate. Affected most, they understand the least, and understanding, when it comes, invariably arrives too late

DrTskoul

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Re: Climate change, the ocean, agriculture, and FOOD
« Reply #1751 on: August 13, 2019, 12:40:45 AM »
Gap Growing Between Irrigated, Rain-Fed Crop Yields
https://news.unl.edu/newsrooms/today/article/gap-growing-between-irrigated-rain-fed-crop-yields/



A 65-year comparative analysis between U.S. yields of irrigated and rain-fed crops has sounded a message to farmers, land managers and policymakers: Mind the gap.

The University of Nebraska–Lincoln's Suat Irmak and Meetpal Kukal analyzed the annual yields of nine crops—corn, soybean, spring wheat, winter wheat, sorghum, cotton, barley, oats and alfalfa—on a county-by-county basis from 1950 to 2015.

Irmak and Kukal found that the yield gaps—differences in food produced with irrigation vs. rainfall alone—generally widened over that span, a trend they suspect stems partly from climate change and technological advances in irrigation management.



Irmak and Kukal likewise quantified the number of years that given counties failed to generate any meaningful yields of a crop when relying only on rainfall, which some farmers might factor into long-term risk assessments, the researchers said.

"There's a bigger risk with rain-fed (agriculture)," Irmak said. "There's an overall, long-term average value for rain-fed yields, but that doesn't mean you are going to get that yield every year. That's why we consider irrigation an insurance policy that normalizes things and provides stable productivity under varying climatic conditions."

... "Irrigation on 24 percent of the cultivated land produces 40 percent of the total global food supply," Irmak said. "If we stopped irrigating today, more people would suffer or worse due to substantially reduced food, fiber and feed production, especially in areas that are already experiencing a significant shortage of supplies.

As long there is water to irrigate with....

TerryM

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Re: Climate change, the ocean, agriculture, and FOOD
« Reply #1752 on: August 13, 2019, 12:53:39 AM »
^^
and energy to power the pumps.
Terry

Tom_Mazanec

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Re: Climate change, the ocean, agriculture, and FOOD
« Reply #1753 on: August 13, 2019, 01:56:07 AM »
Farmers getting online on cutting carbon output:
No-tillage seeding, regenerative cattle farming
https://www.cbc.ca/news/canada/manitoba/sustainable-farming-canada-un-report-1.5243184
Bio-char, putting acreage back to prairie
https://www.cnn.com/2019/08/08/us/iowa-farmers-climate-change-weir-wxc/index.html
Indian farmers could cut co2 78% just by not burning rice residue:
https://cosmosmagazine.com/climate/not-burning-would-be-a-win-win-for-indian-farmers
« Last Edit: August 13, 2019, 02:09:07 AM by Tom_Mazanec »
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Sigmetnow

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Re: Climate change, the ocean, agriculture, and FOOD
« Reply #1754 on: August 13, 2019, 02:59:08 PM »
Climate crisis: Goldsmiths university has banned beef to help fight emergency
Quote
Beef burgers, burritos and other enduring student dishes are off the menu at a London university -- in order to help the fight against the climate crisis.
Goldsmiths University in London will be scrapping all beef products from its campus, the institution's new chief has announced, as it seeks to become carbon neutral by 2025. ...
https://edition.cnn.com/2019/08/13/uk/goldsmiths-beef-ban-climate-scli-gbr-intl/index.html
People who say it cannot be done should not interrupt those who are doing it.

El Cid

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Re: Climate change, the ocean, agriculture, and FOOD
« Reply #1755 on: August 13, 2019, 04:12:03 PM »
I think the beef ban is a huge mistake although I have not eaten any meat or fish in 30 years.
First, animals (cattles as well) do have an important place in regenerative agriculture and they can be bred without any adverse effects on the climate or the planet in general.
Second, it is always very harmful to ban things. Economic incentives are always better (see the historic example of taxes on alcohol vs. total abolition; or the current insane war on drugs). Create a carbon tax, or even a beef tax if you will but do not ban.

kassy

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Re: Climate change, the ocean, agriculture, and FOOD
« Reply #1756 on: August 13, 2019, 06:27:44 PM »
That is true but this is only one university doing this. So someone will open up a McBeef or something near there and get rich.  ::)
Þetta minnismerki er til vitnis um að við vitum hvað er að gerast og hvað þarf að gera. Aðeins þú veist hvort við gerðum eitthvað.

Sebastian Jones

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Re: Climate change, the ocean, agriculture, and FOOD
« Reply #1757 on: August 13, 2019, 07:47:23 PM »
I think the beef ban is a huge mistake although I have not eaten any meat or fish in 30 years.
First, animals (cattles as well) do have an important place in regenerative agriculture and they can be bred without any adverse effects on the climate or the planet in general.
Second, it is always very harmful to ban things. Economic incentives are always better (see the historic example of taxes on alcohol vs. total abolition; or the current insane war on drugs). Create a carbon tax, or even a beef tax if you will but do not ban.
Yes, livestock can have an important place in regenerative agriculture. However, the vast majority of meat consumed in the developed world plays no role in regenerative agriculture, quite the contrary.
Yes, taxes designed to shift behaviour away from harmful practices is a preferred method over regulation, usually. However, Canada's carbon tax specifically exempts agriculture....

Sebastian Jones

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Re: Climate change, the ocean, agriculture, and FOOD
« Reply #1758 on: August 13, 2019, 07:56:12 PM »
Our agri-food systems perversely discourage ecologically beneficial behaviour, but despite this, some farmers are persisting in doing the right thing.
One caveat about No-Till farming: No-Till facilitated by RoundUp ready cops is of no help.
No-Till combined with mulching during harvest is most definitely a good thing.
https://www.nationalobserver.com/2019/08/12/news/farmers-look-capture-carbon-warnings-climate-shocks-grow-louder
Extract:
"It's not the cattle, it's our management that's the problem. To concentrate them all into a huge feedlot, that's an ecological disaster."

Hjertaas said farmers tend to be traditional and slow to change, but financial incentives could go a long way to making the switch and overcome cost and uptake challenges.

"I'm all for a carbon tax, we need to tax bad behaviour. But what's missing is we need to reward the good behaviour."

Sigmetnow

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Re: Climate change, the ocean, agriculture, and FOOD
« Reply #1759 on: August 14, 2019, 01:26:35 AM »
All the more reason to ban fossil fuel vehicles in the city....

World's largest urban farm to open – on a Paris rooftop
The 14,000m² farm is set to open in the south-west of Paris early next year
https://www.theguardian.com/cities/2019/aug/13/worlds-largest-urban-farm-to-open-on-a-paris-rooftop
People who say it cannot be done should not interrupt those who are doing it.

vox_mundi

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Re: Climate change, the ocean, agriculture, and FOOD
« Reply #1760 on: August 16, 2019, 09:00:54 PM »
Putting brains into farming equipment is a no-brainer, since it's a semi-structured environment that's generally clear of wayward humans driving other vehicles.

“There are three classes of people: those who see. Those who see when they are shown. Those who do not see.” ― Leonardo da Vinci

Insensible before the wave so soon released by callous fate. Affected most, they understand the least, and understanding, when it comes, invariably arrives too late

DrTskoul

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Re: Climate change, the ocean, agriculture, and FOOD
« Reply #1761 on: August 16, 2019, 09:06:15 PM »
Some of the largest ones are practically unmanned today....

vox_mundi

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“There are three classes of people: those who see. Those who see when they are shown. Those who do not see.” ― Leonardo da Vinci

Insensible before the wave so soon released by callous fate. Affected most, they understand the least, and understanding, when it comes, invariably arrives too late

Tom_Mazanec

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Re: Climate change, the ocean, agriculture, and FOOD
« Reply #1763 on: August 17, 2019, 07:45:45 PM »
https://e360.yale.edu/features/with-new-perennial-grain-a-step-forward-for-eco-friendly-agriculture
A cereal and beers are now being made with a new variety of perennial grain known as Kernza. Proponents say this marks a significant advance for a new agriculture that borrows from the wild prairie and could help ensure sustainable food production in a warming world.

SHARKS (CROSSED OUT) MONGEESE (SIC) WITH FRICKIN LASER BEAMS ATTACHED TO THEIR HEADS

El Cid

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Re: Climate change, the ocean, agriculture, and FOOD
« Reply #1764 on: August 17, 2019, 08:54:15 PM »
Unfortunately Kernza is not (yet?) working, it is not a soultion, since its yield is miniscule - but this effort is great. However, regenerative ag works with well known annuals (eg wheat, corn, soy etc) and can build soil AND put carbon (from the air) into the soil.