In this week’s Science Friday we take a close look at the lessons provided by a recent report on the PNW’s network of Intensely Monitored Watersheds.
Lessons from Declines in Chinook Productivity
In this month’s Science Friday, we look at the loss of fecundity in Washington Chinook populations.
Hatchery Selection and the Effects of Egg Size on Steelhead Growth and Development
In this week’s Science Friday we examine a new study that sheds light on the alarming mechanisms and impacts of the rapid shift in egg size of fish reared in hatcheries.
El Niño is Coming: What Does it Mean for Steelhead?
Our Science Advisor looks at the winter forecast, ocean temperatures, and the impacts on steelhead in the Pacific.
Missing the mark: Understanding why steelhead overshoot Oregon’s John Day River
Overshooting happens when steelhead ascend one or more dams upstream of their natal tributaries and must eventually pass back through the hydro system and downstream fish passage facilities that are not designed to accommodate adult fish. Here’s why the John Day River is critical to understanding more about this phenomenon.
A New Scientific Resource to Better Understand the Global Impacts of Hatchery Fish on Wild Salmonids
A literature Review led by Trout Unlimited shows over 80 percent of global, peer-reviewed research on the topic has found an adverse effect on wild salmonid populations in freshwater and marine environments.
Science Friday: Rapid diversification in Salmon and Steelhead Populations Following Dam Removal
In this week’s Science Friday post, John McMillan is back with a breakdown of a recent study looking at how steelhead, chinook, and coho are re-establshing their populations and diversity, on a pair of Elwha River tributaries between the former dam sites.
Science Friday: What’s up with these kelts?
Another Science Friday looking at the fate and migratory oceanic patterns of steelhead kelts from Alaska’s Situk River.
Science Friday (PART TWO): Disappearing Steelhead – The Fate of Summer Steelhead Seeking Coldwater in the Columbia and Snake Rivers
fish traveling downstream through the hydro system, and discussion of possible management changes to help improve steelhead survival.
Science Friday (PART ONE): Disappearing Steelhead – The Fate of Summer Steelhead Seeking Coldwater in the Columbia and Snake Rivers
In the Columbia and Snake rivers hydropower systems, many migrating summer steelhead overshoot their spawning streams, passing dams multiple times and increasing mortality rates, trying to find cold water refuge. We look at the ramifications on steelhead management for not properly accounting for these overshoot steelhead.