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{ "pk": 62855, "title": "Considerations for the Development of a Juvenile Production Estimate for Central Valley Spring-Run Chinook Salmon", "subtitle": null, "abstract": "Effective species management depends on accurate estimates of population size. There are, however, no estimates of annual juvenile production for Central Valley spring-run Chinook Salmon (“spring run”), a highly imperiled species in California, making it difficult to evaluate population status and effectively manage key issues such as entrainment of this species at water diversions. In recognition of this critical information gap, we initiated an effort to develop a juvenile production estimate (JPE) for spring run, defined here as an annual forecast of the number of juvenile Central Valley spring-run Chinook Salmon that enter the Sacramento–San Joaquin Delta (“Delta”) from the Sacramento Valley. This metric would allow for a more robust scientific assessment of the population, which is needed to effectively manage water to reduce effects on spring run, a key condition of state permit requirements. To help guide this effort, we organized a workshop for stake-holders, managers, and scientists to review some of the key aspects of spring-run biology, examine the management and conservation importance of a JPE, identify knowledge gaps, introduce new tools, and discuss alternative approaches to forecasting the number of spring run emigrating from the Sacramento River drainage and into the Delta. This paper summarizes the spring-run biology, monitoring, and emergent methods for assessment considered at the workshop, as well as the guiding concepts identified by workshop participants necessary to develop a JPE for spring-run Chinook Salmon.", "language": "en", "license": { "name": "Creative Commons Attribution 4.0", "short_name": "CC BY 4.0", "text": "Attribution — You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.\n\nNo additional restrictions — You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits.", "url": "https://creativecommons.org/licenses/by/4.0" }, "keywords": [ { "word": "Chinook Salmon, juvenile production estimate, JPE, life history, race identification, spring run, Sacramento River, Sacramento–San Joaquin Delta" } ], "section": "Research Article", "is_remote": true, "remote_url": "https://escholarship.org/uc/item/59v4k4k3", "frozenauthors": [ { "first_name": "Peter", "middle_name": "A.", "last_name": "Nelson", "name_suffix": "", "institution": "California Department of Water Resources,\nSacramento, CA 95813 USA\n\nand\n\nInstitute of Marine Sciences\nUniversity of California, Santa Cruz\nSanta Cruz, CA 95060 USA", "department": "" }, { "first_name": "Melinda", "middle_name": "", "last_name": "Baerwald", "name_suffix": "", "institution": "California Department of Water Resources,\nSacramento, CA 95813 USA", "department": "" }, { "first_name": "Oliver", "middle_name": "(Towns)", "last_name": "Burgess", "name_suffix": "", "institution": "US Bureau of Reclamation,\nSacramento, CA 95825 USA", "department": "" }, { "first_name": "Eva", "middle_name": "", "last_name": "Bush", "name_suffix": "", "institution": "Delta Science Program, \nDelta Stewardship Council,\nSacramento, CA 95814 USA", "department": "" }, { "first_name": "Alison", "middle_name": "", "last_name": "Collins", "name_suffix": "", "institution": "The Metropolitan Water District of Southern California,\nLos Angeles, CA 90012 USA", "department": "" }, { "first_name": "Flora", "middle_name": "", "last_name": "Cordoleani", "name_suffix": "", "institution": "Institute of Marine Sciences,\nUniversity of California Santa Cruz,\nSanta Cruz, CA 95060 USA\n\nand\n\nSouthwest Fisheries Science Center\nNOAA Fisheries\nSanta Cruz, CA 95060 USA", "department": "" }, { "first_name": "Henry", "middle_name": "", "last_name": "DeBey", "name_suffix": "", "institution": "Delta Science Program, Delta Stewardship Council,\nSacramento, CA 95814 USA", "department": "" }, { "first_name": "Daphne", "middle_name": "", "last_name": "Gille", "name_suffix": "", "institution": "California Department of Water Resources,\nSacramento, CA 95813 USA", "department": "" }, { "first_name": "Pascale", "middle_name": "A. L.", "last_name": "Goertler", "name_suffix": "", "institution": "Delta Science Program, Delta Stewardship Council,\nSacramento, CA 95814 USA", "department": "" }, { "first_name": "Brett", "middle_name": "", "last_name": "Harvey", "name_suffix": "", "institution": "California Department of Water Resources,\nSacramento, CA 95813 USA", "department": "" }, { "first_name": "Rachel", "middle_name": "C.", "last_name": "Johnson", "name_suffix": "", "institution": "Southwest Fisheries Science Center,\nNOAA Fisheries,\nSanta Cruz, CA 95060 USA\n\nand\n\nCenter for Watershed Science\nUniversity of California Davis \nDavis, CA 95616 USA", "department": "" }, { "first_name": "Jason", "middle_name": "", "last_name": "Kindopp", "name_suffix": "", "institution": "California Department of Water Resources,\nSacramento, CA 95813 USA", "department": "" }, { "first_name": "Erica", "middle_name": "", "last_name": "Meyers", "name_suffix": "", "institution": "California Department of Fish and Wildlife, \nSacramento, CA 94244 USA", "department": "" }, { "first_name": "Jeremy", "middle_name": "", "last_name": "Notch", "name_suffix": "", "institution": "Institute of Marine Sciences,\nUniversity of California, Santa Cruz,\nSanta Cruz, CA 95060 USA\n\nand\n\nSouthwest Fisheries Science Center\nNOAA Fisheries\nSanta Cruz, CA 95060 USA", "department": "" }, { "first_name": "Corey", "middle_name": "C.", "last_name": "Phillis", "name_suffix": "", "institution": "The Metropolitan Water District of Southern California,\nLos Angeles, CA 90012 USA", "department": "" }, { "first_name": "Gabriel", "middle_name": "", "last_name": "Singer", "name_suffix": "", "institution": "Center for Watershed Science,\nUniversity of California, Davis;\nDavis, CA 95616 USA\n\nand\n\nDepartment of Wildlife, Fish, and Conservation Biology\nUniversity of California Davis\nDavis, CA 95616 USA", "department": "" }, { "first_name": "Ted", "middle_name": "", "last_name": "Sommer", "name_suffix": "", "institution": "California Department of Water Resources (retired),\nSacramento, CA 95813 USA", "department": "" } ], "date_submitted": "2022-06-21T12:17:28+08:00", "date_accepted": "2022-06-21T12:17:28+08:00", "date_published": "2022-06-30T15:00:00+08:00", "render_galley": null, "galleys": [ { "label": "", "type": "pdf", "path": "https://journalpub.escholarship.org/jmie_sfews/article/62855/galley/48537/download/" } ] }