CalTrout’s Nigiri Project is receiving a lot of press coverage this week as the project’s salmon, that have been feasting in the flooded rice fields for the last several weeks, are heading out to the Pacific Ocean.
The California Aggie did a great job of reporting the multi-benefit approach of the project and how it’s good for the fish and good for the farmer.
Emily James, sales and logistics manager for Robbin’s Rice Company, explains that turning rice fields into wetland habitat in the off-season generates additional income for farms. She states that, due to concerns about air quality and pollution, rice farmers are no longer allowed to burn their fields at the end of the season and are thus forced to flood the fields.
“That flooded field provides excellent habitat and we usually do it for duck hunting and then a couple years ago we were working on pilot studies to see the benefits for migrating shore-birds since the Sacramento Valley is on the Pacific Flyway,” James said.
She adds that the both the marketing and financial benefits of the floodplains make it very attractive to farmers.
ABC News 10 in Sacramento aired footage of the fields and the migration process, including some comments from CalTrout project director, Jacob Katz. You can see that video here.
Last but not least, Capital Public Radio featured a piece on the project as student’s from a 5th grade field trip were getting a science lesson from Katz.
“Sunlight is converted by algae into sugars. Those sugars are the foundation of the aquatic food chain. When a river is stuck between two levees, there’s very little room, there’s very little surface area for light to hit,” says Katz. “When you spread that water out, like we’re doing here on these agricultural fields, you end up with the solar battery that really can power the whole aquatic system.”
Katz says shallow ponds on the rice fields provide easily accessible food for fish that wouldn’t find nearly as much to eat if they were still in the Sacramento River.
“The fish grow incredibly fast. We are looking at fish that are basically doubling their weight every week,” says Katz. “This is what Central Valley salmon should be doing. This is what they did historically.”
Read the full story here. Good stuff.
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Peter Moyle is the Distinguished Professor Emeritus in the Department of Wildlife, Fish and Conservation Biology and Associate Director of the Center for Watershed Sciences, at UC Davis. He is author or co-author of more than 240 publications, including the definitive Inland Fishes of California (2002). He is co-author of the 2017 book, Floodplains: Processes and Management for Ecosystem Services. His research interests include conservation of aquatic species, habitats, and ecosystems, including salmon; ecology of fishes of the San Francisco Estuary; ecology of California stream fishes; impact of introduced aquatic organisms; and use of floodplains by fish.
Robert Lusardi is the California Trout/UC Davis Wild and Coldwater Fish Researcher focused on establishing the basis for long-term science specific to California Trout’s wild and coldwater fish initiatives. His work bridges the widening gap between academic science and applied conservation policy, ensuring that rapidly developing science informs conservation projects throughout California. Dr. Lusardi resides at the UC Davis Center for Watershed Sciences and works closely with Dr. Peter Moyle on numerous projects to help inform California Trout conservation policy. His recent research interests include Coho salmon on the Shasta River, the ecology of volcanic spring-fed rivers, inland trout conservation and management, and policy implications of trap and haul programs for anadromous fishes in California.
Patrick Samuel is the Conservation Program Coordinator for California Trout, a position he has held for almost two years, where he coordinates special research projects for California Trout, including the State of the Salmonids report. Prior to joining CalTrout, he worked with the Fisheries Leadership & Sustainability Forum, a non-profit that supports the eight federal regional fishery management councils around the country. Patrick got his start in fisheries as an undergraduate intern with NOAA Fisheries Protected Resources Division in Sacramento, and in his first field job as a crew member of the California Department of Fish & Wildlife’s Wild and Heritage Trout Program.