Only in one part, while sourcing the rest on other works, of which there's plenty, the other is a review article, and of course methods will have to differ somewhat.

I specifically go through review articles to show the studies are actually more than plentiful. You can look them up more thoroughly before dismissing. They all speak of the same picture, and it's about as clear as "the water is wet".

I provided you with a vast pool of studies to confirm what should be obvious to anyone who had at least school-grade biology. I would be much pleased if you could gather scientifically-backed points to the opposite. Show me research that demonstrates cows are actually not ecological disaster and are at least on par with pigs and chicken, or better yet, plant foods on ecological footprint, since that's the basis of your original claim.