No insects then? Are you counting fungi under microorganisms?
Most of our crops are going to need to be self-seeding, wind pollinated, capable of being hand-pollinated or otherwise not requiring the help of bees. (Or bats. Or hummingbirds. Or any other critters that would assist with that.) So I guess everyone is vegan/vegetarian by necessity? I second the importance of the botany school.
No eggs, plant-based milks only. Are plant-based cheeses a thing? Protein intake is going to be an issue I think. Lots of nuts, beans, seaweed is apparently a thing as far as plant based protein? I’m going to propose seaweed farms off the coast.
On the flip side: no mice, termites, ants, aphids or other insect pests wrecking harvests or spoiling food in storage. No mosquitoes, ticks etc. to bite and spread disease.