In several recent posts we have discussed the concept of density dependence and how it is used in fisheries management. Today we dive in deeper and talk about the stock-recruitment relationship, density dependence, and how the results of such models are applied to managing steelhead. First, let’s define some terms. Stock refers to, in this context, a population of …
Science Friday: Why do juvenile steelhead move at the onset of winter?
By John McMillan We are going old school today, Science Friday style. No, we’re not talking about shooting ourselves with a tranquilizer gun, going streaking, or starting a fraternity to compensate for a mid-life crisis. We’ll leave that to Will Ferrell. But we are going back in time, to 1971. Today we revisit one of the foundational pieces of …