Well, it is steelhead season. No doubt. “Septober” is officially underway. To celebrate the changing season we are re-posing the question that every serious steelhead angler should be able to answer in the affirmative: Do you really know a steelhead? Think about it, we spend thousands of hours pursuing steelhead, but how much of that time is …
Stock Recruit Curves And Wild Steelhead, A Good Match?
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: Juvenile Density, Distribution and Habitat Capacity
By John McMillan New Year, new Science Friday! Last week we looked at the concept of carrying capacity, how it is estimated, and the most important habitat factors used to come up with those estimations. This week we shift gears a bit and review studies that illuminate how patterns in fish distribution can affect assumptions about carrying capacity. Recall …