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Publisher: USGS | Science Center: Leetown Science Center (LSC, Kearneysville) | Format: URL
www.lsc.usgs.gov — This is a research project whose primary objective is to assess the health of selected fish species (brown bullhead and largemouth bass) and compare these findings with historic information on fish health in the individual rivers and with concurrent samples collected at reference sites. A secondary objective is to compare and correlate the fish More...
2008 | Publisher: Other (RSC Publishing, Journal of Environmental Monitoring) | Format: URL
www.rsc.org — Environmental contaminant and biomarker monitoring data from major U.S. river basins were summarized for black bass (Micropterus spp.) and common carp (Cyprinus carpio) sampled over a nine year period. Cumulative frequency distributions revealed taxon differences for many organochlorine residue concentrations, elemental contaminant concentrations, More...
May 4 2007 | Publisher: Other (Springer New York) | Format: URL
www.springerlink.com — This project is an evaluation of three potentially nonlethal alternatives to fillet sampling for the determination of mercury (Hg) concentrations in smallmouth bass (Micropterus dolomieu) to monitor mercury concentrations in smallmouth bass (micropterus dolomieu) from six sites in southern Missouri were captured by electrofishing. Blood samples More...
September 2006 | Publisher: USGS | Format: URL
pubs.usgs.gov — This report documents the spatial trends in the concentrations of accumulative contaminants and assesses the contaminant effects on the fish from the Colorado River Basin.
2002 | Publisher: USGS | Science Center: Western Fisheries Research Center (WFRC, Seattle) | Format: URL
wfrc.usgs.gov — The value of this long-term monitoring program will provide data crucial for understanding demographic and reproductive characteristics of these endangered sucker populations. This research will have wide applicability to federal, state, and tribal agencies in the basin for management and recovery efforts.
2002 | Publisher: USGS | Science Center: Great Lakes Science Center (GLSC, Ann Arbor) | Format: .PDF
www.glsc.usgs.gov — In 2002, scientists from the Great Lakes Science Center assessed the health of the populations of preyfish for the biennial State of the Lakes Ecosystem Conference (SOLEC) to provide information to policy makers on the status of the lakes and future needs. Preyfish population is one of the 80 indicators used by SOLEC to determine the health of the More...
Publisher: USGS | Science Center: Florida Integrated Science Center (FISC, Gainesville) | Format: URL
fl.biology.usgs.gov — The African jewelfish (Hemichromis letourneuxi) has been established in canals surrounding the Miami area since the 1960s. With changes in water delivery to the park, the species has recently (2000) entered Everglades National Park and expanded its range westward through Big Cypress National Preserve. Simultaneously, African jewelfish from a More...
Publisher: USGS | Science Center: Florida Integrated Science Center (FISC, Gainesville) | Format: URL
fl.biology.usgs.gov — The Nile tilapia (Oreochromis niloticus) is commonly used in aquaculture worldwide. Feral populations exist in many regions where individuals escape culture and establish in natural habitats. In Mississippi, Nile tilapia are established in at least three distinct localities (fig. 1): the lower Pascagoula and Escatawpa river drainages, and a More...
Publisher: USGS | Science Center: Western Fisheries Research Center (WFRC, Seattle) | Format: URL
wfrc.usgs.gov — An entrainment study at Grand Coulee Dam indicated that 200,000 - 600,000 kokanee were entrained, primarily at the 3rd powerhouse, during a 40-month time period. Following the recommendations of the Independent Scientific Review Panel, research was initiated to investigate a strategy to reduce entrainment by using strobe lights to repel salmonids More...
Publisher: USGS | Science Center: Western Fisheries Research Center (WFRC, Seattle) | Format: URL
wfrc.usgs.gov — This research summary reports on the decline of Pacific lampreys (Lampetra tridentata) in the Columbia River Basin. Their numbers have declined to only a remnant of their pre-1940's populations. One factor that could be detrimental to lamprey production is the amount of energy they expend negotiating upstream fish passage facilities at dams. An More...
Publisher: USGS | Science Center: Western Fisheries Research Center (WFRC, Seattle) | Format: URL
wfrc.usgs.gov — The goal of this study is to determine egress routes and egress timing of juvenile salmon with respect to passive particle movement in the tailrace of John Day Dam using ultra-sonic fish tracking technology. The objectives are to evaluate egress routes and egress timing of juvenile spring chinook salmon with respect to paired releases of neutrally More...
Publisher: USGS | Science Center: Western Fisheries Research Center (WFRC, Seattle) | Format: URL
wfrc.usgs.gov — This is a research summary who's project objectives are to: 1) Coordinate watershed stakeholders in order to guide the implementation of watershed restoration actions that are consistent with stakeholder objectives, 2) Monitor physical habitat conditions and natural production of juvenile, smolt, and adult steelhead in the Wind River sub-basin, More...
U.S. Department of the Interior |
U.S. Geological Survey