作者: Lenny F. Grimaldo , Ted Sommer , Nick Van Ark , Gardner Jones , Erika Holland
DOI: 10.1577/M08-062.1
关键词: Fishery 、 Delta 、 Estuary 、 Entrainment (chronobiology) 、 Smelt 、 Fish screen 、 Environmental science 、 Longfin smelt 、 Hypomesus transpacificus 、 Pelagic zone
摘要: Abstract We examined factors affecting fish entrainment at California's State Water Project and Central Valley Project, two of the largest water diversions in world. Combined, these from upper San Francisco Estuary support a large component municipal agricultural infrastructure for California. However, precipitous declines abundance several estuarine species, notably threatened delta smelt Hypomesus transpacificus, have generated major concern about as possible cause declines. 13-year data set export pumping operations environmental characteristics to determine (as indexed by salvage screens) potential manipulation improve conditions fish. Entrainment three migratory pelagic species—delta smelt, longfin Spirinchus thaleichthys, striped bass Morone saxatilis—was primarily determined seasonal occurrence particular life sta...