Come across this article:
Shifting less than one day per week’s worth of calories from red meat and dairy products to chicken, fish, eggs, or a vegetable-based diet achieves more GHG reduction than buying all locally sourced food.
And another site showing impact:
and doing both is even better :)
of course, backyard food has enormously less GHG footprint than farm produced food, which uses tractors, oil based fertilisers, transport, refrigeration and potentially packaging to get food to our plates.
food is responsible for about 28% of our GHG footprint.
locally produced (not factory farmed) food AND low GHG food choices taken together = a BIG reduction in GHG footprint :)
It's kind of a false dichotomy they're presenting in the article: they need to consider the reduction from going vego vs the reduction of choosing local and organic rather than factory farmed and transported, as well.
I think it's a brilliant idea to go as vego as you can, and to choose poultry products whenever possible if not, given the environmental impacts of seafood, dairy, beef and lamb.