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What is the relationship between freshwater and ocean growth and steelhead life histories in the Situk River

In Alaska, Science Friday, Steelhead Files by Kyle SmithLeave a Comment

We are in the heart of winter steelhead season now. Some regions are experiencing poor returns of wild fish this year, while others are faring better. As steelheaders we ride the wave, from good years to bad ones and everything in between.  This week we are back with a Science Friday post on a recent study on wild steelhead in …

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Science Friday- Just how much diversity can one creek support? Asotin Creek provides an example

In Science Friday, Snake River, Steelhead Files, Washington by Kyle SmithLeave a Comment

If only it was as simple as an adipose fin.  The presence of an adipose fin is universally recognized as the mark.  An individual with an adipose fin is, with a few exceptions, considered a wild steelhead.  On the other hand, those marked, clipped, or ad-intact fish, they are the hatchery ones. Although it is but a small mark, the …

eDNA and O. mykiss, part II

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Natalie Stauffer-Olsen   Two weeks ago we looked at the use of eDNA in monitoring for the presence or absence of aquatic species. While our post was not a comprehensive review of this subject, we did include some of the most promising aspects — and some of the challenges — associated with using this new technology.   In short, eDNA …

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Science Friday: The value of new technology: eDNA and O. mykiss

In Science Friday by steelheaders1 Comment

By Natalie Stauffer-Olsen   It is always exciting when new technology becomes available that can help us understand, manage and protect wild steelhead, the mavericks of the Pacific salmonids.   Steelhead and rainbow trout populations can be difficult to predict, model and understand because of their very plastic (scientific term for highly variable) life histories, from juveniles to adults. What’s …

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Science Friday: What happens when you cram the big’uns in with the small’ins?

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We sure do love this beautiful weather! It’s almost the first day of June. Summer is officially within sight.   This week’s Science Friday goes back in time over 20-years to 1997.  We review a study conducted by Brett Harvey and Rodney Nakamoto. We have reviewed some of their work previously, which focused on habitat usage by adult steelhead.  Today …

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Science Friday: Successful habitat restoration on the Washougal River

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Welcome to another Science Friday post from Wild Steelheaders United. In this space we usually review scientific studies that have implications for wild steelhead conservation and management. But we take a slightly different path this week. I was born and raised on the banks of the Washougal River in SW Washington. The poor Washougal has suffered more than most steelhead …