Interagency Ecological Program San Francisco Estuary Smelt Larva Survey 2009 – 2022

• Main Authors: Interagency Ecological Program (IEP), Lauren Damon, Vanessa G Mora, Jessica A Jimenez
• Format: Dataset
• Language: unknown
• Published: Environmental Data Initiative 2022
• Subjects: Interagency Ecological Program for the San Francisco Bay Delta Estuary; Longfin Smelt; Delta Smelt; CDFW Stockton Labs; SLS; IEP; estuaries; long term monitoring; endangered species; fishes; population dynamics; larvae; turbidity; water temperature; tides; Cottus Cottus asper; Spirinchus Spirinchus thaleichthys; Acanthogobius Acanthogobius flavimanus; Clupea Clupea pallasii; Lepidogobius Lepidogobius lepidus; Leptocottus Leptocottus armatus; Gillichthys Gillichthys mirabilis; Menidia Menidia audens; Clevelandia Clevelandia ios; Morone Morone saxatilis; Hypomesus Hypomesus transpacificus; Gasterosteus Gasterosteus aculeatus; Genyonemus Genyonemus lineatus; Percina Percina macrolepida; Engraulis Engraulis mordax; Oncorhynchus Oncorhynchus tshawytscha; Ameiurus Ameiurus catus; Atherinopsis Atherinopsis californiensis; Tridentiger Tridentiger barbatus; Tridentiger Tridentiger bifasciatus; Dorosoma Dorosoma petenense; Hypomesus Hypomesus nipponensis; Catostomus Catostomus occidentalis; Pogonichthys Pogonichthys macrolepidotus; Lepomis Lepomis macrochirus; Lucania Lucania parva; Porichthys Porichthys notatus; Ictalurus Ictalurus punctatus; Ilypnus Ilypnus gilberti; Gambusia Gambusia affinis; Atherinops Atherinops affinis; Micropterus Micropterus punctulatus; Citharichthys Citharichthys stigmaeus; Cyprinus Cyprinus carpio; Acipenser Acipenser transmontanus; Lepomis Lepomis microlophus; Parophrys Parophrys vetulus; Ameiurus Ameiurus melas; Alosa Alosa sapidissima; Syngnathus Syngnathus leptorhynchus; Lampetra Lampetra ayresii; Cottus asper; Spirinchus thaleichthys; Acanthogobius flavimanus; Clupea pallasii; Lepidogobius lepidus; Leptocottus armatus; Gillichthys mirabilis; Menidia audens; Clevelandia ios; Morone saxatilis; Hypomesus transpacificus; Gasterosteus aculeatus; Genyonemus lineatus; Percina macrolepida; Engraulis mordax; Oncorhynchus tshawytscha; Ameiurus catus; Atherinopsis californiensis; Tridentiger barbatus; Tridentiger bifasciatus; Dorosoma petenense; Hypomesus nipponensis; Catostomus occidentalis; Pogonichthys macrolepidotus; Lepomis macrochirus; Lucania parva; Porichthys notatus; Ictalurus punctatus; Ilypnus gilberti; Gambusia affinis; Atherinops affinis; Micropterus punctulatus; Citharichthys stigmaeus; Cyprinus carpio; Acipenser transmontanus; Lepomis microlophus; Parophrys vetulus; Ameiurus melas; Alosa sapidissima; Syngnathus leptorhynchus; Lampetra ayresii; Catostomus catostomus
• Online Access: https://pasta.lternet.edu/package/metadata/eml/edi/534/6

The Interagency Ecological Program San Francisco Estuary Smelt Larva Survey was initiated by the California Department of Fish and Wildlife (CDFW) in 2009 to monitor the distribution and abundance of newly-hatched Longfin Smelt (Spirinchus thaleichthys) in the San Francisco Estuary. Surveys are conducted bi-weekly and sampling begins in December, and continues through March. The surveys sample at fixed locations, stations, from Carquinez Strait through Suisun Bay and into the Sacramento-San Joaquin River Delta. Napa River stations were added in 2014.Each survey consists of 44 stations. At each station, one 10 minute stepped-oblique (bottom to top) tow is made following a prescribed tow schedule. The net is a conical 505 µm mesh lashed to a D shaped frame mounted on skis. Larval fish samples are preserved in the field in 10% Formalin and brought back to the CDFW Stockton Lab for identification to species and enumeration under a microscope. Several types of data are collected at each station in addition to the larval fish sample, including the volume of water sampled by the net, surface water temperature, surface and bottom specific conductance (EC normalized at 25˚C), Secchi disk depth, tow duration, tidal condition, and surface water turbidity.