14

A relevant point is that raising animals for food requires feeding them plants. Since only around 10% of the energy input (the percentage used for growth) at one trophic level of a food chain can be passed onto the next, it is more efficient to have a shorter food chain. In practice, this means that, generally speaking, you need a lot more crops to feed to ...


13

It's not about your diet as much as it is the farming of the meat. According to this article in the Guardian: The heavy impact on the environment of meat production was known but the research shows a new scale and scope of damage, particularly for beef. The popular red meat requires 28 times more land to produce than pork or chicken, 11 times more water ...


10

TLDR: The short answer is that it's not possible. Greenhouse gas emissions come from a diverse set of sources, and only the weakest targets can be met by focusing solely on one area. Even if every person on earth became a vegan, that would not be enough, although it would help significantly. I'm going to start with a major simplifying assumptions to ease ...


9

Globally The Census of Marine Life concluded in 2010 that 90 percent of the large fish are gone, primarily because of overfishing. This includes many of the fish we love to eat, like Atlantic salmon, tuna, halibut, swordfish, Atlantic cod. If we don’t allow for proper recovery, these fish risk total extinction. Novogratz, A. and Velings, M. (2014). The ...


9

Below is a table comparing the carbon footprint of common foods versus driving. For example, the first entry of 91 in the column titled, equivalent miles driven / kg, means that eating 1kg of lamb has the same carbon footprint as driving 91 miles. The 16 in the column, to the right, titled, equivalent miles driven / 500 cal, means eating 500 calories of lamb ...


8

There is an Oxford University study on the Dietary greenhouse gas emissions of meat-eaters, fish-eaters, vegetarians and vegans in the UK it concludes that ...an average 2,000 kcal high meat diet had 2.5 times as many GHG (higher greenhouse gas) emissions than an average 2,000 kcal vegan diet. It concludes that moving from a high meat diet to a ...


7

There are two sides to your question: economics, and ecological impact. As Zanna explained the latter very well, and my experience is with the former, I'll focus on that. As a political economist, I'd say deforestation isn't implemented specifically for either crop or husbandry, but rather for whatever is the most lucrative option in that particular time ...


7

It would certainly be an amount greater than you spend on animal products, and even then, that money donated to whatever charity you choose doesn't cancel out the effect of your vote for the things those charities are opposed to. You have to realise that money isn't buying new ice caps or replacing animals, it's trying to affect change in society and ...


5

Short version: Yes. Vegan organic farms are actually surprisingly rare due to the fact that usually animal fertilizers are used. But it is possible and they are sustainable. I personally know this example in Germany although it is still a smaller scale farm where only 3 to 5 people work. Different techniques are used to rest the soil, to avoid chemical ...


5

I will write down a list that touch this subject and also received a decent rating on IMDB (a vague criteria of a movie/documentary quality): Earthlings - I have watched it a long time ago and it focuses mainly on how bad animals are treated in the meat industry, but I think it touches a little the environmental impact of livestock industry Food, Inc. - "...


5

See this article: The carbon footprint of 5 diets compared - shrinkthatfootprint.com It suggests that the average person produces 2.5 CO2e a year while a vegetarian only produces 1.7 CO2e a year, and vegans produce 1.5 CO2e a year. Apparently, 18% of global carbon emissions come from livestock


4

In 2006, the UN published the study Livestock's Long Shadow and stated, that the livestock sector accounts for 18% of the greenhouse gas emissions. As stated in the source cited by the questioner, there is an Oxford University study on the Dietary greenhouse gas emissions of meat-eaters, fish-eaters, vegetarians and vegans in the UK concluding that "an ...


4

As you point out, Rabbits are vegan. Their diet is primarily grass hay, which may be available locally. The environmental impact of getting the hay depends on how far away you have to go to get it (or how far someone brought it) and how much irrigation it used. But the amount of hay that a typical rabbit uses is quite small. One normal sized bale of hay ...


4

Conclusion 8.06 quintillion liters, or 2.129 quintillion gallons, of water, is used each year for meat worldwide. 30% of Earth's land mass is used for these animals. How I got There Meat: About 20,029 liters (5,291 gallons) of water is used to produce only one kilogram (2.2 pounds) of meat. After doing some research and math I've come up with the conclusion ...


4

I think in this case it is not about being organic, but sustainable. https://www.rspo.org/about https://theconversation.com/palm-oil-boycott-could-actually-increase-deforestation-sustainable-products-are-the-solution-106733 If certification of palm oil becomes more popular, it will improve prospects for wildlife, including orangutans. This is why major ...


4

A Carne É Fraca (or La Carne Es Débil, "Meat is Weak") is a Brazilian documentary about animal abuse in the meat industry. It has a CC-BY license (you are free to distribute it as long as you don't charge for it) and it is available on Youtube (with subtitles). Meat The Truth is more focused on environmental consequences of consuming meat. This movie ...


4

To address the 'ecology' side of your question, there are a few factors to consider: How much meat/fish you are eating in both scenarios - probably an obvious one How is the fish caught? Pole and line is the most sustainable method, as it minimises capturing endangered species, non-relevant species (dolphins, sharks) and damaging the ocean floor which ...


3

Cowspiracy is a good documentary about the environmental impact of animal agriculture, and it has Spanish subtitles.


3

The most extensive study and publication on this subject is 2006 FAO's report titled "Livestock's long shadow". In chapter 4 it analyzes the role of livestock industry in greenhouse gases emissions and states it's responsible for about 18% of GHG emissions, more than transportation sector. We can hence infer that stop consuming meat has higher impact than ...


3

There are many ways to assess whether human activities are "good for the environment" but when it comes to eating fish, the major concern is about rapidly declining fish populations in all oceans around the world. I suggest checking out these related questions: How big is the impact that humans have on the emptiness of oceans? How long would it take for ...


3

That's an interesting question. According to this article fisheries can recover even in ten years, so much faster than "a few human generations": The team ran computer simulations on a massive database of 4,713 fisheries, representing about 78 percent of worldwide fishing activity. By 2050, global fish populations could double if all countries ...


3

This is a false dichotomy. You can't raise (and breed) animals without growing plants to feed them. So it really boils down to which society is better for the environment: one which (1) purely grows crops for food or one which (2) grows crops for animal feed, this isn't an alternative, they're doing both. Clearly (by this logic), cultivating only crops (...


3

They appear aligned, in that AR posts are in the same style and hosted on the same site as the XR events, e.g.: https://rebellion.earth/event/october-animal-rebellion/ About goals, they have overlapping goals. "Animal Rebellion is an animal and climate justice movement with the stated aim of using nonviolent civil disobedience to compel government action ...


3

I found one study that addresses the production of Vitamin D3: Life cycle assessment of vitamin D3 synthesis: from batch to photo-high p,T (Springer Link HTML, data table HTML, DOI). The functional unit of analysis is 1,000 mg crystalline vitamin D3. In terms of dosage, 1000 mg of crystalline D3 is equivalent to 40,000,000 IU. Assuming a daily dose of 1000 ...


3

The animal welfare portion of this question already has a complex answer, before even beginning to consider the complexities of climate change and carbon offsets. Therefore in my answer I will focus on animal welfare and ignore the climate change component of the question. This question implicitly assumes that vegans make up a relatively small portion of ...


2

Vegans who follow an ethical lifestyle, who would however like to share that life with an animal, can have several questions – for instance which pets are vegetarian or vegan so that they can blend seamlessly into an ethical lifestyle. There can be ethical questions such as this one: should vegans have pets at all? As to this, most vegans tend to agree that ...


2

My bet is on fishes. My arguments come below: low food consumption - the vast majority of fishes are cold-blooded (yes, there is at least one warm-blooded fish specie), so they need significantly lower amounts of food than warm-blooded pets (source): For the same body weight poikilotherms need one-third to one-tenth of the energy of homeotherms. They ...


2

There is a lot of uncertainty around marine ecosystem recovery. In some areas, there are concerns that even if all fishing stopped, the ecosystem would never return to it's former state. Part of the reason is that over fishing is not the only factor effecting marine life. Warming waters and increased extreme weather also have a large impact. The Gulf of ...


2

I'm not sure about the relative decrease in comparison to driving, but I found this study suggesting that a vegan diet on average cuts your green house gas emissions in half: Scarborough In conclusion, dietary GHG emissions in self-selected meat-eaters are approximately twice as high as those in vegans. It is likely that reductions in meat consumption ...


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