Forestry & Wildlife
Reineke Self-Thinning Line
N = 1000(D/25)^(−1.605)

As a crowded even-aged stand grows, competition kills the smaller trees along Reineke's −1.605 self-thinning line, trading falling stem count for rising average diameter.
Computed & rendered in pure C# on the frozen OnlyCSharp 1.8 library — animation baked to GIF with the library's own
Gif encoder (no GPU, no ffmpeg, no external packages).