The Lake Tahoe Takeover

While Lake Tahoe is famous for its clear blue waters, the ecosystem of the lake is far from untouched or pristine. Stocking and unintended introductions of non-native Read More…

Disrupting the Delta Food-Web

When it comes to alien invaders (also known as invasive species) in the Sacramento-San Joaquin Delta, the most damaging species generally fall into two categories: ecosystem engineers Read More…

The dish on fish guts

Food webs are important features of any ecosystem – but in an environment like the river or the ocean, how do you actually identify who eats who? Read More…

The disappearing salmon carcass

When we attempt to document natural processes in the field through photo or video, we sometimes run into challenges when nature gets other ideas. During the Chinook Read More…

Fishy food chain

We’ve frequently observed that juvenile Chinook salmon are a popular menu item for a number of introduced predatory fish, such as striped bass and largemouth bass. However, Read More…

Mayfly meal ticket

Benthic macroinverebrates are an important source of food for many of the aquatic species found in our river systems, as we described in a previous post, (see Read More…

Focus on fish food

When working to improve the quality of habitat on a river, it is important to understand what constitutes a successful project. It is not always safe to Read More…