Results 21 to 30 of about 427,817 (162)
Pumping at the water export facilities in the southern Sacramento-San Joaquin Delta kills fish at and near the associated fish-salvage facilities.
Wim J. Kimmerer
doaj +1 more source
Modeling Delta Smelt Distribution for Hypothesized Swimming Behaviors [PDF]
Delta Smelt, Hypomesus transpacificus, is an endangered pelagic fish native to the San Francisco Estuary. The distribution of Delta Smelt in the estuary shifts landward from low-salinity habitat to freshwater habitat before spawning.
Bever, Aaron J. +5 more
core +1 more source
Use of affinity analysis to guide habitat restoration and enhancement for the imperiled delta smelt
Habitat restoration efforts in the upper San Francisco Estuary, including the Sacramento-San Joaquin Delta, California, move forward, despite a paucity of information on the environmental requirements of many targeted species.
Hamilton, SA, Murphy, DD
doaj +1 more source
Following its listing as threatened under the California Endangered Species Act in 2009, Longfin Smelt (Spirinchus thaleichthys) became a focus of resource managers in the San Francisco Estuary.
Michael Eakin
doaj +1 more source
Foraging and metabolic consequences of semi-anadromy for an endangered estuarine fish. [PDF]
Diadromy affords fish access to productive ecosystems, increasing growth and ultimately fitness, but it is unclear whether these advantages persist for species migrating within highly altered habitat.
Bruce G Hammock +8 more
doaj +1 more source
Identifying Environmental Factors Limiting Recovery of an Imperiled Estuarine Fish
Correctly identifying the environmental factors that limit population growth and recovery of imperiled species is an essential element of any targeted conservation program.
Scott A. Hamilton, Dennis D. Murphy
doaj +1 more source
Understanding the Extent of Hyperactivity and Related Behavioral Alterations in Delta Smelt and Longfin Smelt [PDF]
Agricultural and urban contaminants enter aquatic environments at concentrations that can affect a variety of sublethal endpoints, including organismal behavior, which can in turn lead to impacts at the population level. The San Francisco Bay Delta (SFBD)
Patullo, Caitlyn Elaine
core +1 more source
Allocation of scarce water resources to meet beneficial but competing end uses has become commonplace in drought-stricken western North America. In the Sacramento-San Joaquin Delta in California, regulatory agencies endeavor to protect the endemic and ...
Scott A. Hamilton +2 more
doaj +1 more source
Vital dye immersion evaluations with juvenile delta smelt
Immersion‐based vital dyes were tested as a marking method for use in larval smelt mark–recapture studies. We assessed five fluorescent dyes as a mark for juvenile osmerids: 4‐Di‐1‐ASP, BODIPY FL C12, BODIPY 505/515, Nile red, and calcein.
Virginia Afentoulis +5 more
doaj +1 more source
While flow is known to be a major driver of estuarine ecosystems, targeted flow manipulations are rare because tidal systems are extremely variable in space and time, and because the necessary infrastructure is rarely available.
Ted Sommer +10 more
doaj +2 more sources

