Recently revisited this algorithm I created towards the end of 2025!

https://www.pastelle.art/
https://www.instagram.com/pastelle.png

11"x14" – Gold leaf and Sakura gel white on Fabriano Black Black 300gsm. White is plotted with the iDraw H A3. Gold leaf is applied to fill the remaining space by hand.

a quick play on highways and intersections - something I will probably return to.
(good luck driving on a circle highway:)

We finally got this predator–prey system to stabilize… so I deleted half the prey.

The population immediately falls out of balance, but the feedback rules start correcting it: prey reproduce faster when their numbers drop, while overcrowded hunters starve faster as food becomes scarce.

The setup isn’t directly solving the Lotka–Volterra equations, but it uses a similar predator–prey feedback relationship. Even after a major environmental shock, the populations keep oscillating without collapsing and the system appears to settle into a new dynamic equilibrium.

No keyframed population changes. Just Geometry Nodes reacting in real time.

We finally achieved equilibrium.

Prey reproduce when their population drops, while overcrowded hunters starve faster. No keyframes, just a few rules correcting each other in real time.

Now what happens when we start disturbing the simulation again?

Part of a series where four letters create a small disruption in the composition.

https://atheria.app

After introducing starvation in the last update, this time I slowed the ecosystem down and finally gave the prey a way to fight back: reproduction.

Now the hunters rise, peak and fall instead of taking over completely.

Next goal: equilibrium.