Lightknight said:
The problem with the 'meat for ecology' argument is they don't chart the damages that livestock do (seriously, look at what happens to a single creek bed after you introduce only a few heads of cattle). In order to meet that 2000 calorie diet, you will find it easier do so with a vegetarian diet by land dedicated to agriculture otherwise given to livestock. Also, because you're using less land means more land given over to active carbon sinking CO2 emissions.
Secondly, most of those vegetarian models ypou linked still had
cheeses .... which means cattle. Fish makes sense, but any form of cattle is going to be worse at meeting calorie intake targets than growing of fruits and vegetables. If anything, the growing and greater consumption of mangoes would deliver more nutrition, more energy, than anything else by yard of land given to agriculture and may ultimately be the way to go. Mangoes are the miracle fruit. Fantastic carbon sinking potential of orcharding them, fantastically nutritious, it goes great with ANYTHING, and it's dead easy to grow if you're in the right climate. Wonderfully efficient in terms of nutrition production compared to amount of materials spent in soil improving.
Which is perhaps why US standards of CO2 emission shouldn't be what you look at, given the limited means by which to grow a whole variety of fruits and vegetables which would better suit the nutritional intake of humanity in terms of a global market. When you take into account total land, total water usage, total nutrition by value... cattle are wasteful and far worse than even a badly managed orchard.
There is no argument. If you want a greener planet, a focus of vegetable and fruit production is far better than running cattle. No argument. I've seen how much produce a small orchard can maintain... cattle require 30 times the amount of pasture. Fruit orchards also act as carbon offsets... which is a two for one benefit of better nutrition, greater volumes, and greater environmental usage of land. There is a reason why mangoes are eaten everywhere in the tropics and subtropics. Look up what a green mango tree looks like when it is reaching optimal fruit harvesting maturity. There is no argument as to the far superior benefits of greater fruit and vegetable consumption. Running cattle also quicker destroys top soil. The force pressure of their hooves reduce the rate by which foraged grasses can replenish themselves.
If you don't know what the effects of 'poaching' (soil compaction) is, I invite you to any farm with dams and where sheep, horse or cattle have been ranged. Observe the land all around said dams. Nothing will grow. Not a year later after you've moved livestock onwards. Not two years later. Not five years later. The soil has been hardened, the grass dies ... it's just
bare earth. Dusty and dead.
A cattle paddock will be depleted faster than an orchard will, or a vegetable and grain farm. Mangoes as I was pointing to before? You only need to fertilise once with blood and bone right after harvest. That's all it needs. It will provide far more nutrition, with less environmental impact, than a cow on a 2.5 acre lot. That's a given. It will actually help reduce carbon dioxide in air. About the most environmentally unsound things concerning a fruit orchard is harvesting mechanics, of which are still inifinitely more ecofriendly than destroying acre after acre of once viable top soil due to hoof compaction and overgrazing. Simply looking at CO2 emissions of farms is a fucking stupid way to examine the problem solely. Soil erosion, total water usage, total nutrition. If you can feed more people with less, and thus commit less of the Earth's ecosystems to grazing, that is a far more positive ecological measure. More land remaining as forests means morew carbon dioxide sinks.
Running cattle is not merely destructive to land and devastating by emission standards, you just need
more land. Cattle happen after a long chain of photosynthesising plants. Energy isn't magically created .... foods closer to that point of primarily utilising photosynthesis for chemical energy are always going to be more efficient sources of ernergy in terms of space, emissions, and continuous harvesting. This is compounded by the fact that cattle requires sound confitions. They need cleaning with chemicals, they need constant food supply (which creates more wastage), they need medical supplies, they need housing, and the effects of natural disasters such as drought or storm hit them greater.
Whilst you can say that drought and storm affect crops as well, keep in mind that cattle require greater feed volumes also when grazing fails. Cattle are simply worse for the environment. In every conceivable way they persistently fail to live up to the nutritional benefits of high vegetable and fruit diets. The persostent myth that cattle generate less CO2 emissions relies on people forgetting they need more land, and more 'support' assets that in total generate far greater environmental distress. A cow is not merely a cow. It is huge amounts of feed, water, available grazing, medical supplies, chemical cleaners, transport, and slaughter operations.
Frankly I think more humans should eat bugs. If you made the meat-eater argument centered on insectivorous cuisine, I might have agreed. But eating insects is the way of the future. I think that if you're vegetariuan for 'ecological reasons' you're doing it wrong. If you wanted to be a more ecologically positive you should be rooting for a high insect diet. Not only that, but insects should be looked at when considering colonisation of space. In terms of protein, iron, other necessary vitamins and minerals, you can beat 1000 hectares of cattle production with a environmentally sealed hectare-sized warehouse given over to insect production.
With a single kilo of biological waste, I can produce 12 times as much nutrition from black soldier fly maggot fat than you can with a cow and a kilo of perfectly edible grain. So you can literally turn food waste into more food. Without chemicals, without all the other bullshit. And you know the best thing? Far better for your body. You could even easier automate the entire process, reducing necessary labour.... making all that available animal fat cost peanuts.
Also probably better in terms of animal rights, particularly when looking at better efficiency protocols enacted elsewhere in the world where cattle suffer major distress. Not only that, reduced CO2 emissions in terms of transporting pallets of insects, better economy by space in stores. Not only that, but the popularising of eating insects and the greater technological knowhow of farming insects will mean that more skills concerning insect production will filter into poorer classes of people worldwide. Meaning more people can access high protein foods by their ownsome, on a regular basis, with little lands.
More people eating for less space, money, and time. That seems like a win-win to me. But cattle are certainly far more extravagant in terms of cost and production than vegetables and fruits. It's not hard to see that when you actually go to a stockyard and see for yourself the environmental impact of running cattle.
(Edit) I'm skeptical of US studies concerning food and food security. Mainly because no one wastes green stock like an American family. In the Philippines, nothing is wasted. Many families have chickens or pigs where all meagre scraps go to. Nothing is taken for granted. Unlike the US, Japan, Australia or Europe... empty lots of unsold land don't simply stay empty. Communities will use it until construction or habitation. Life is both cheap and expensive. Looking towards how poorer communities like the Philippines operates in terms of fruit, grain and vegetable production offers immediate and simple solutions to finding new ways to feed people and fight green waste.