Phosphorus Cycle: Bedrock to Sediment

The phosphorus cycle is the slow, gas-free biogeochemical cycle that ultimately limits how much life an ecosystem can sustain. This simulator renders it as a real 3D landscape — weathering rock, a soil layer, a stand of plants, a body of water and a sediment floor — and populates it with a swarm of instanced particles, each one a parcel of phosphorus rolling per-capita transition probabilities every simulated year exactly as the underlying compartment equations dictate. Four controls — weathering rate, fertilizer input, plant uptake rate and runoff/erosion rate — let you push the system from a slow natural cycle into a fertilizer-driven regime where the water pool floods with dissolved phosphorus (a live eutrophication-risk readout) before it settles out and is permanently buried in the sediment, illustrating why phosphorus, unlike carbon or nitrogen, never really comes back once it reaches the sea floor.