I think this is a really unique idea. I feel like it would take a lot of time to perfect. I'd like to see what you'd come up with given more time. 

If you have some time please play and rate my game:

https://itch.io/jam/gmtk-2019/rate/463512

It's a neat concept but it still has huge balancing issues. You can basically decimate until most things are gone, then plague specific species out of existence so only one is left.

Frankly, given the three options for rating a game in a Game Jam "Design, Adherence to the Theme, Originality",  I thought this game was a breath of fresh air in comparison to the other takes on the theme "only one". There were some balance issues and decimate was a little easy. 

I didn't understand how to play the game, but I managed to win by clicking on the animals in the right screen. I woud suggest you to start the game in a small environment and then move it to the current one, there's too much information to learn and the time ticking (turns used) does not help to focus on what's happening.

I like the concept of a game built around an ecosystem simulator, but I was able to win just by repeatedly decimating the population until only one species was left. It could have been more interesting if you had to sort the species into different containers, or confine them to particular continents.

I'm sorry but I really didn't get the game mechanic.. but I'll try it later so that I can see.
Maybe you guys could add a text screen after the introductory one explaining better what the player can do. I just clicked and, somehow, got the win screen, but wasn't really sure of what was going on. But nevertheless, congratulations! First time, it takes a lot of courage.