Article Instance

HTTP 200 OK
Allow: GET
Content-Type: application/json
Vary: Accept

{
    "pk": 62927,
    "title": "Synthesizing Relationships Between Winter-Run Chinook Salmon Out-Migration Survival and Water Operations in the Sacramento–San Joaquin Delta",
    "subtitle": null,
    "abstract": "Sacramento River winter-run Chinook Salmon (\nOncorhynchus tshawytscha\n) are an endangered population that faces numerous challenges across its life cycle, including juvenile out-migration through the heavily anthropogenically modified Sacramento–San Joaquin Delta, or Delta. Water exports from pumping facilities in the Delta can alter local hydrology and influence movement of out-migrating juveniles, some of which are observed in or near pumping facilities. Monitoring and regulations, intended to protect out-migrating fish through restrictions on pumping, are predicated on assumed relationships among fish observations, water operations, and through-Delta migratory survival. In this study, we use a new conceptual model to review the current state of science for winter-run Chinook Salmon out-migration survival in the Delta, and use simulation modeling to address pertinent knowledge gaps. Results of this study highlight varying support for the influence of Sacramento River flow, temperature, and water exports on routing and survival in different regions of the Delta. The contributions of specific routing pathways to the interior Delta (e.g., through Threemile Slough) to survival, and the relationship between fish entrainment at pumping facilities and overall migratory survival, remain uncertain. Recommended future work includes continued fine-scale acoustic telemetry studies throughout the Delta, novel integrated modeling of monitoring data, and contextualizing the relevance of Delta-based survival to population viability by incorporating explicit uncertainties about survival into existing life-cycle models.",
    "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": "Sacramento River winter-run Chinook Salmon, out-migration, routing, survival, Sacramento–San Joaquin Delta, water operations, simulations"
        }
    ],
    "section": "Research Monograph",
    "is_remote": true,
    "remote_url": "https://escholarship.org/uc/item/6x45n457",
    "frozenauthors": [
        {
            "first_name": "Alexander",
            "middle_name": "",
            "last_name": "Jensen",
            "name_suffix": "",
            "institution": "US Bureau of Reclamation,\nScience Division, Bay–Delta Office,\nSacramento, CA 95814 USA",
            "department": ""
        },
        {
            "first_name": "Brian",
            "middle_name": "",
            "last_name": "Mahardja",
            "name_suffix": "",
            "institution": "US Bureau of Reclamation,\nScience Division, Bay–Delta Office,\nSacramento, CA 95814 USA",
            "department": ""
        },
        {
            "first_name": "Jianchun",
            "middle_name": "",
            "last_name": "Huang",
            "name_suffix": "",
            "institution": "US Bureau of Reclamation,\nSedimentation and River Hydraulics Group,\nTechnical Service Center,\nDenver, CO 80225 USA",
            "department": ""
        },
        {
            "first_name": "Samaneh",
            "middle_name": "",
            "last_name": "Saadat",
            "name_suffix": "",
            "institution": "Jacobs,\nSacramento, CA 95833 USA",
            "department": ""
        },
        {
            "first_name": "Joshua",
            "middle_name": "",
            "last_name": "Israel",
            "name_suffix": "",
            "institution": "US Bureau of Reclamation,\nScience Division, Bay–Delta Office,\nSacramento, CA 95814 USA",
            "department": ""
        }
    ],
    "date_submitted": "2025-11-26T04:14:25Z",
    "date_accepted": "2025-11-26T04:14:25Z",
    "date_published": "2025-12-08T08:00:00Z",
    "render_galley": null,
    "galleys": [
        {
            "label": "",
            "type": "pdf",
            "path": "https://journalpub.escholarship.org/jmie_sfews/article/62927/galley/48613/download/"
        }
    ]
}