Hello from me too @zplakias, welcome! Things are a bit quiet due to, well, August, but activity will phase in organically as the days shorten here in the northern hemisphere.
I am also an economist – but barely, in fact I consider myself an apostate. And a huge sci-fi reader, like you.
Food systems… do you find any good ideas in sci-fi about those? Among my own readings, the main thing that comes to mind is Neeper’s Webs of Varok, but there must be more out there. If you have any suggestion, could you add it to the wiki? Varok is already in there, but, well, it’s a wiki, so feel free to edit and improve.