A cheat sheet of ecological functions

From time to time I find myself referencing Ben Bolker's book, Ecological Models and Data in R to quickly look at the references of ecological functions. They are broken into four groups: (1) piecewise, (2) rational, (3) exponential, and (4) power-law functions. I've created a modified reference that has them all on a single page---a cheat sheet---that I thought I'd share. Of course, folks should buy and read the book---it's excellent.