In a world similar to the earth, a new colony (let's say 1000 settlers) is installed in a wild environment without any other colonies around them (i. e. no commercial routes). The technology advancement is the same as humans around 1000-2000 B.C).
Let's imagine two distinct scenarios.
First scenario, they don't have any initial seeds or tools for agriculture but the environment is very friendly. They can hunt animals in the forest, fish in rivers and sea, gather a lot of berries, fruits, etc. With theses conditions, how many settlers should be hunters, fishermen or gatherers to ensure the supply of food for all the colony in the first decades?
Second scenario, they have advanced knowledge in agriculture (advanced for ~1000-2000 B.C.) and they already have seeds, tools and some domesticated animals. So they can plant seeds, manage and harvest large fields or make orchards. They are also able to raise cattle, chickens, pigs, etc. The environment is the same so they can hunt or fish wild animals . In this kind of colony, how many settlers are required for food supply?