Great game!! Was surprised to see that this is your first jam submission. Very well done!!
The basic rules are easy enough to understand, lower farms are higher reward but also higher risk investments.
I didn't find myself building trees at all (maybe besides one tree at the end).
It almost feels like the story of an apocalypse with ever rising sea waters slowly destroying the earth - kind of tragic and beautiful at the same time. "The calm before the storm" feels like the period where you still have land compared to the last few turns when you're scrambling to build anything for your poor island denizens.
Overall enjoyed it a lot, great work! My Islands survived 199 days.