Results 111 to 120 of about 813 (188)

Calibrating temperature reconstructions from fish otolith oxygen isotope analysis for California's critically endangered Delta Smelt

, 2019
Rationale Oxygen isotope ratios (δ18O values) of fish otoliths (ear bones) are valuable geochemical tracers of water conditions and thermal life history. Delta Smelt (Hypomesus transpacificus) are osmerid forage fish endemic to the San Francisco Estuary,
Lewis, Levi S., Fangue, Nann A., Malte Willmes, Peter Holden, Loiselle, Liane, J. Louise Conrad, Denny, Christian, Nann A. Fangue, Liane Loiselle, Baxter, Randall, Holden, Peter, Willmes, Malte, Hobbs, James A., Tien‐Chieh Hung, Christian Denny, Davis, Brittany E., James A. Hobbs, Williams, Ian, Richard A. Armstrong, Ian S. Williams, Randall Baxter, Conrad, J. Louise, Armstrong, Richard, Brittany E. Davis, Hannah F. James, Hung, Tien-Chieh, Levi S. Lewis, James, Hannah F   +27 more
core   +1 more source

Validating estuarine movements from otoliths for an imperiled fish

Aquatic Biology
The application of otolith tools to infer the movement history of fishes requires controlled experiments to validate methods and assess confidence in inferences gained for wild specimens.
LS Lewis, M Willmes, C Denney, L Cavole, W Xieu, RA Fichman, TC Hung, L Ellison, T Stevenson, AA Schultz, BG Hammock, S Teh, JA Hobbs   +12 more
doaj   +1 more source

Initial Assessment of the Introduction of Spottail Shiner (\u3cem\u3eNotropis hudsonius\u3c/em\u3e) and Delta Smelt (\u3cem\u3eHypomesus transpacificus\u3c/em\u3e) into Willard Bay Reservoir, Utah.

, 1984
Spottail shiner (Notropis hudsonius) and delta smelt (Hypomesus transpacificus) were introduced into Willard Reservoir to improve the forage base for walleye (Stizostedion vitreum vitreum) and black crappie (Pomoxis nigromaculatus). Spottail shiners were
Sommerfeldt, Thomas E.
core   +1 more source

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  

Age and repeated collection interval effects on sperm motility in the endangered delta smelt Hypomesus transpacificus

Endangered Species Research
Understanding the reproductive dynamics of endangered species is crucial for effective conservation strategies. This study examines the impact of age and repeated collection interval on sperm motility in the Critically Endangered delta smelt Hypomesus ...
MM Rahman, T Hung
doaj   +1 more source

Delta smelt and salmon habitats beyond the estuary.

, 2018
The San Francisco Estuary’s salmon and smelt are going extinct, with climate change and non-native species increasingly limiting opportunities for classic restoration schemes.  Reconciliation ecology – supporting native species within human ...
Durand, John R, Moyle, Peter B, O'Rear, Teejay Alexander   +2 more
core  

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

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  

Polygenic discrimination of migratory phenotypes in an estuarine forage fish. [PDF]

G3 (Bethesda), 2022
Campbell MA, Joslin SEK, Goodbla AM, Willmes M, Hobbs JA, Lewis LS, Finger AJ.   +6 more
europepmc   +1 more source