Results 101 to 110 of about 427,817 (162)

Revisiting Assumptions that Underlie Estimates of Proportional Entrainment of Delta Smelt by State and Federal Water Diversions from the Sacramento-San Joaquin Delta

San Francisco Estuary and Watershed Science, 2011
The delta smelt is a small, endemic fish that resides in the upper San Francisco Estuary. They are listed under state and federal Endangered Species Acts. Since 2002, their abundance has been at record low levels.
William J. Miller
doaj  

Delta Schools Retiring Teachers; Anderson, Ruth

, 1965
Photograph of Mrs.

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Delta Elementary School; Sixth Grade; 1928-1929

, 1928
Sixth Grade Class: First row: Ruby Taylor?, Roe Ann Sampson, Mary Daly, Cleo Killpack, Minnie Henrie, Pearl Warnick. Second row: Mrs. Deta P. Neeley, Marion Folsom, Pearl Steele, Rex Beckstead, Thora Bunker, Clair Porter, Jay Anderson.

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Abundance Trends, Distribution, and Habitat Associations of the Invasive Mississippi Silverside (Menidia audens) in the Sacramento–San Joaquin Delta, California, USA

San Francisco Estuary and Watershed Science, 2016
doi: http://dx.doi.org/10.15447/sfews.2016v14iss1art2Although many alien fish species have colonized the Sacramento–San Joaquin Delta (Delta), few are as pervasive and abundant as Mississippi Silversides (Menidia audens).
Brian Mahardja, J. Louise Conrad, Lester Lusher, Brian Schreier   +3 more
doaj  

Spatially dynamic abundance patterns for a rare fish species

Ecosphere
Recovery of rare and imperiled species is often supported by targeting the dynamic drivers of abundance patterns. However, knowledge of these drivers can be obscured by challenges stemming from species detectability and autocorrelated data. Longfin Smelt
Valerie A. Steen, James T. Peterson, Adam Duarte   +2 more
doaj   +1 more source

Sample Design-based Methodology for Estimating Delta Smelt Abundance

San Francisco Estuary and Watershed Science, 2008
A sample design-based procedure for estimating pre-adult and adult delta smelt abundance is described. Using data from midwater trawl surveys taken during the months of September, October, November, and December for the years 1990 through 2006 and ...
Ken B. Newman
doaj  

Conservation of Native Fishes of the San Francisco Estuary: Considerations for Artificial Propagation of Chinook Salmon, Delta Smelt, and Green Sturgeon

San Francisco Estuary and Watershed Science, 2011
Many native fishes in the San Francisco Estuary and its watersheds have reached all-time low abundances. Some of these declining species (e.g., Chinook salmon Oncorhynchus tschawytscha) have been under artificial propagation for decades. For others (e.g.,
Joshua A. Israel, Kathleen M. Fisch, Thomas F. Turner, Robin S. Waples   +3 more
doaj  

Delta Junior High and High School Building

, 1966
In the fall of 1966 the doors were opened and both the Junior High School and the High School youth were offered a secondary education under the direction of a new Principal, Kimber Barlow with Jack Fowles as Assistant principal, Delta ...

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Contaminant Effects on California Bay–Delta Species and Human Health

San Francisco Estuary and Watershed Science, 2016
doi: https://doi.org/10.15447/sfews.2016v14iss4art5Many contaminants in the California Bay–Delta (Bay–Delta) exceed regulatory standards, affect aquatic species, and potentially affect human health.
Stephanie Fong, Stephen Louie, Inge Werner, Jay Davis, Richard E. Connon   +4 more
doaj  

Developmental Staging and Salinity Tolerance in Embryos of the Delta Smelt, Hypomesus transpacificus. [PDF]

Aquaculture, 2019
Romney ALT, Yanagitsuru YR, Mundy PC, Fangue NA, Hung TC, Brander SM, Connon RE.   +6 more
europepmc   +1 more source