Episode 29: Helping Fins and Feathers

A generation ago, it may have seemed far-fetched that Sacramento Valley rice fields could play a vital role for millions of birds.  However, changes in rice growing methods in the early 1990s – a shift from burning fields after harvest to adding a few inches of water to break down leftover rice straw - led to just such an occurrence. Area rice fields are now home to nearly 230 wildlife species, including 7 to 10 million ducks and geese every fall and winter. The 'surrogate wetlands' are now crucial to the massive Pacific Flyway wildlife migration.

California's struggling salmon may be next to benefit from those same rice fields.

This is year three of pilot salmon research by the California Rice Commission, UC Davis, California Trout and other partners. This project will test and refine rice farming practices designed to provide habitat and food for fish. If successful, baby salmon will rear in flood bypass rice fields in the winter, when no rice is grown, then head off to the ocean. Every step of the process is being monitored to understand the best practices moving forward. If all goes well, this project will move from pilot to voluntary adoption on suitable Sacramento Valley rice farms.  This work is supported by a grant from the Natural Resources Conservation Service, major sponsors including Syngenta, State Water Contractors and a long list of contributors.

Additionally, there are major modifications to existing water infrastructure planned that will allow juvenile salmon on their way to sea better access to food-rich floodplain habitats.

This nutrient-rich food web develops naturally in winter flooded rice fields, due to organic matter and sunlight.

Finally, the Fish Food program is working with rice farmers and wetland managers on the protected or "dry side' of levees.  While these fields and wetlands are not directly connected to the river and can not host salmon they can still support salmon populations by creating fish food. A dense invertebrate food web rapidly grows in nutrient rich, sun-soaked shallow waters of flooded rice fields. Several weeks after being inundated this veritable bug buffet can be strategically drained into the river to provide much-needed nutrition for small juvenile salmon migrating downstream to the ocean.

Jacob Katz, Senior Scientist with CalTrout, is a passionate advocate for salmon. He said he is very hopeful that the collaborative work being done in the Sacramento Valley will ultimately help fish, as well as birds, people and farms.

"There are two big reasons for my optimism," Katz remarked. "The first is the science. It's really clear that, if we meet every link in the chain, every type of habitat that these critters need, including salmon, we can expect a really dramatic response – an increase in abundance. The second is collaboration. Everywhere I turn, I see farmers dedicated to more ducks, more geese, more salmon – and opening their farms to a rewilding; a way of thinking about welcoming the wild back onto the farm. We're not talking about going back. We are still going to be one of the most productive farming areas on Earth. But, in the non-growing season, floodplain farms can be managed as fantastic habitat for multiple species."

The first baby salmon will soon be added to rice fields participating this year. The ultimate goal for the project is to benefit natural-origin fish – salmon that would swim onto the fields naturally when flooding occurs. However, in the event that the bypass doesn't flood, eggs from hatchery fish raised at UC Davis will be utilized to test the practice. We will keep you posted on key developments and findings as they become available.

Episode Transcript

Jim Morris: Following one of the driest years in decades, we're off to a great start for rain and snow in California. Sierra snowfall in December shattered a 51 year old record and the California water year, which started October 1^st, has already been more productive than the entire year prior. But water is hardly ever an easy subject in our state. Finding enough for the environment, cities and farms is frequently contentious. One creative plan involves what at first may seem like an unlikely pairing, rice fields and salmon.

Jim Morris: Welcome to Ingrained: The California Rice Podcast. I'm your host Jim Morris, proud to have worked with California farmers and ranchers for the past 32 years to help tell their stories. I'm at Montna Farms, a rice farm near Yuba City, here they grow premium sushi rice. It's also a haven for wildlife and they participate in a pilot program that may help the state's salmon population, which has been struggling.

Jim Morris: The salmo