This world is inhabited by carnivorous humans, how they came to be remains a mystery. The geography is typical of a post-glacial world (fjords, lots of lakes, valley steppes, all that good stuff) and the climate is consistently barely above freezing year round, but precipitation is very limited throughout the year. Very tundra-like, minus the snow.
I wanted to make a society that depended fully on animal husbandry in a way evolved from the Chukchi people, with rotational grazing reindeer inland, and instead of hunting sea mammals, they have domesticated creatures akin to the Steller Sea Cow, which they graze on kelp in the many lakes and fjords of the world. Living mostly off the milk and meat of these animals, plus eggs from a cold resistant ostrich-like bird.
But I found out that it is more efficient to grow crops to feed the livestock ala Industrial Farming instead of letting it graze, something that would defeat the purpose of this whole thing. At first I thought that the lack of rain would make agriculture impossible, but then realized that the abundance of lakes makes irrigation possible, and eventually humans can develop salt-water tolerant crops, and the same goes for cold resistant crops.
So, I come here with one question:
How can I preserve this amphibious pastoralist society and permanently keep it from growing crops?
There is a couple of things that cannot be altered, though:
- There can not be any snow, for the temperature is stable year round, barely above freezing.
- The glacial lakes are a mainstay of the plot so they can not disappear. Maybe making them endorheic would discourage long term irrigation?