Gleick says:

A successful foray into mathematics for an ecologist would let him say something like this: Here's an equation; here's a variable representing reproductive rate; here's a variable representing the natural death rate; here's a variable representing the additional death rate from starvation or predation; and look --- the population will rise atAnd hey, if you can understand the factors maybe you can predict or at least plan ahead. You could start trading in Fish Food futures.thisspeed until it reachesthatlevel of equilibrium.