There is an alternate Earth somewhere in the multiverse, one in which there are three continents, all separated by an interconnected network of seaways that make up only 45% of the planet's surface (translation: 88,605,000 square miles) and average in at less than one mile deep. Other details of this alternate Earth are as follows:
- The atmosphere is 370 miles thick, as thick as Titan's and only 70 miles thicker than our Earth's.
- Oxygen makes up 32% of the atmosphere, water vapor 0.6% and and carbon dioxide measures in at 400 parts per million.
Now this alternate Earth never had life, which is perfect for the seeds of the question. There are three continents: A West, a North and a South, all divided by the seaways. The North continent measures in at 25% of all the land in this alternate Earth, translated as 27,073,750 square miles, and is basically flat with the exception of the entire subpolar northern coastline being lined up by a mountain range just under two miles above sea level.
In this scenario, some mysterious alien intelligence has snatched off the entire populations of the listed domesticated animals from our world and released them to the North continent:
- Domestic goat
- Domestic pig
- Domestic sheep
- Taurine cattle
- Domestic chicken
- Domestic donkey
- Domestic duck
- Domestic water buffalo
- Domestic horse
- Domestic goose
- Domestic swan goose
- Domestic yak
- Domestic Bactrian camel
- Bali cattle
- Domestic turkey
This next list is of the plants colonized to feed them:
The predators seeded to keep their populations in check aren't listed because they're not relevant to the question.
Based on the current population numbers of each of the listed domesticated animals and the specific details on the North continent, would this create an overall stable environment, or would it be better if I divvy this up in thirds? (Further clarification: West makes up 55% of the land, and South 20%.)