Tons of equations. Check out any quantitative ecology book from the library or any article in leading ecology journals such as American Naturalist or Ecology Letters.
One theory, the maximum entropy theory of ecology, made a big splash recently and is directly inspired by statistical...
Clumping grasses as you call them are known as bunch grasses or tussocks. There's nothing too mysterious about this, except as you say it can be difficult to decide whether the bunch of grass is a single individual or many.
Generally each bunch of grass starts out from a single individual...
Hi I'm Andy,
I'm a post-doctoral scholar at UCLA studying Ecology. I'm hoping that ecology can achieve some of the mathematical and theoretical rigor of physics one day.