Cascading effects of fishing on Galapagos rocky reef communities: reanalysis using corrected data
Jorge I. Sonnenholzner, Lydia B. Ladah, Kevin D. Lafferty
2009, Marine Ecology Progress Series (375) 209-218
This article replaces Sonnenholzner et al. (2007; Mar Ecol Prog Ser 343:77–85), which was retracted on September 19, 2007, due to errors in entry of data on sea urchins. We sampled 10 highly fished and 10 (putatively) lightly fished shallow rocky reefs in the southeastern area of the...
Pilot study to access the role of Ceratomyxa shasta infection in mortality of fall-run Chinook smolts migrating through the lower Klamath River in 2008
Scott Foott, Greg Stutzer, R. Fogerty, Hal Hansel, Steven Juhnke, John W. Beeman
2009, Report
Apparent survival and migration rate of radio-tagged hatchery subyearling Chinook salmon released at Iron Gate Hatchery was monitored in the Klamath River to see if the timing of mortality coincided with observations of ceratomyxosis in re-captured coded wire tag cohorts. Despite rapid emigration, these relatively large (mean fork length 92...
Survival and migration behavior of subyearling Chinook salmon at Lower Granite Dam
A.L. Puls, T.D. Counihan, C. E. Walker, J.M. Hardiman, I.N. Duran
2009, Report
n/a...
Geochemical evolution of a high arsenic, alkaline pit-lake in the Mother Lode Gold District, California
Kaye S. Savage, Roger P. Ashley, Dennis K. Bird
2009, Economic Geology (104) 1171-1211
The Harvard orebody at the Jamestown gold mine, located along the Melones fault zone in the southern Mother Lode gold district, California, was mined in an open-pit operation from 1987 to 1994. Dewatering during mining produced a hydrologic cone of depression; recovery toward the premining ground-water configuration produced a...
Adult chinook salmon passage at Little Goose Dam in relation to spill operations
M.A. Jepson, C.C. Caudill, T.S. Clabough, C.A. Peery, J.W. Beeman, S. Fielding
2009, Report
Spill patterns at Little Goose Dam in 2007 were modified in anticipation of a spillway weir installation intended to improve downstream passage of juvenile salmonids. However, in spill pattern was associated with reduced daily counts of adult salmon passing the dam. Consequently, the behaviors and upstream passage times of radio-tagged...
Olfactory sensitivity of Pacific Lampreys to lamprey bile acids
T. Craig Robinson, Peter W. Sorensen, Jennifer M. Bayer, James G. Seelye
2009, Transactions of the American Fisheries Society (138) 144-152
Pacific lampreys Lampetra tridentata are in decline throughout much of their historical range in the Columbia River basin. In support of restoration efforts, we tested whether larval and adult lamprey bile acids serve as migratory and spawning pheromones in adult Pacific lampreys, as they do in sea lampreys Petromyzon marinus....
NASA 2008 HyspIRI whitepaper and workshop report
HyspIRI Group, John C. Mars
2009, Report
From October 21-23, 2008, NASA held a three-day workshop to consider the Hyperspectral Infrared Imager (HyspIRI) mission recommended for implementation by the 2007 report from the U.S. National Research Council Earth Science and Applications from Space: National Imperatives for the Next Decade and Beyond, also known as the Earth Science...
Isotopic and trace element constraints on the petrogenesis of lavas from the Mount Adams volcanic field, Washington
B.R. Jicha, G.L. Hart, C.M. Johnson, Wes Hildreth, B.L. Beard, S.B. Shirey, J.W. Valley
2009, Contributions to Mineralogy and Petrology (157) 189-207
Strontium, Nd, Pb, Hf, Os, and O isotope compositions for 30 Quaternary lava flows from the Mount Adams stratovolcano and its basaltic periphery in the Cascade arc, southern Washington, USA indicate a major component from intraplate mantle sources, a relatively small subduction component, and interaction with young mafic crust at...
A lacustrine record from Lop Nur, Xinjiang, China: Implications for paleoclimate change during Late Pleistocene
L. Chao, P. Zicheng, Y. Dong, L. Weiguo, Z. Zhaofeng, H. Jianfeng, C. Chenlin
2009, Journal of Asian Earth Sciences (34) 38-45
Climate variability during the Late Pleistocene is studied from the proxies in core CK-2 drilled from the Luobei Depression (91??03???E, 40??47???N), Lop Nur in the eastern Tarim Basin, Xinjiang, China. Geophysical and geochemical properties, including magnetic susceptibility, granularity, chroma, carbonate content, loss on ignition and trace elements, have been determined...
A comparison of pectoral fin contact between two different wild dolphin populations
K.M. Dudzinski, J.D. Gregg, C. A. Ribic, S.A. Kuczaj
2009, Behavioural Processes (80) 182-190
Contact behaviour involving the pectoral fin has been documented in a number of dolphin species, and various explanations about its function have been offered. Pectoral fin contact can take a variety of forms, and involves a number of body parts and movements, likely differing depending upon social or ecological context....
Deficit irrigation of a landscape halophyte for reuse of saline waste water in a desert city
E. P. Glenn, C. Mckeon, V. Gerhart, P.L. Nagler, F. Jordan, J. Artiola
2009, Landscape and Urban Planning (89) 57-64
Saline waste waters from industrial and water treatment processes are an under-utilized resource in desert urban environments. Management practices to safely use these water sources are still in development. We used a deeprooted native halophyte, Atriplex lentiformis (quailbush), to absorb mildly saline effluent (1800 mg l-1 total dissolved solids, mainly...
Lagrangian sampling for emerging contaminants through an urban stream corridor in Colorado
J.B. Brown, W.A. Battaglin, R.E. Zuellig
2009, Journal of the American Water Resources Association (45) 68-82
Recent national concerns regarding the environmental occurrence of emerging contaminants (ECs) have catalyzed a series of recent studies. Many ECs are released into the environment through discharges from wastewater treatment plants (WWTPs) and other sources. In 2005, the U.S. Geological Survey and the City of Longmont initiated an investigation of...
Spatial-temporal patterns in Mediterranean carnivore road casualties: Consequences for mitigation
C. Grilo, J.A. Bissonette, M. Santos-Reis
2009, Biological Conservation (142) 301-313
Many carnivores have been seriously impacted by the expansion of transportation systems and networks; however we know little about carnivore response to the extent and magnitude of road mortality, or which age classes may be disproportionately impacted. Recent research has demonstrated that wildlife-vehicle-collisions (WVC) involving carnivores are modulated by temporal...
Hydraulic anisotropy characterization of pneumatic-fractured sediments using azimuthal self potential gradient
D.N. Wishart, L.D. Slater, D.L. Schnell, G.C. Herman
2009, Journal of Contaminant Hydrology (103) 134-144
The pneumatic fracturing technique is used to enhance the permeability and porosity of tight unconsolidated soils (e.g. clays), thereby improving the effectiveness of remediation treatments. Azimuthal self potential gradient (ASPG) surveys were performed on a compacted, unconsolidated clay block in order to evaluate their potential to delineate contaminant migration pathways...
Assessing rates of forest change and fragmentation in Alabama, USA, using the vegetation change tracker model
Mingshi Li, Chengquan Huang, Zhiliang Zhu, Hua Shi, Heng Lu, Shikui Peng
2009, Forest Ecology and Management (257) 1480-1488
Forest change is of great concern for land use decision makers and conservation communities. Quantitative and spatial forest change information is critical for addressing many pressing issues, including global climate change, carbon budgets, and sustainability. In this study, our analysis focuses on the differences in geospatial patterns and their changes...
Thermal maturity and organic composition of Pennsylvanian coals and carbonaceous shales, north-central Texas: Implications for coalbed gas potential
P.C. Hackley, E.H. Guevara, T.F. Hentz, R.W. Hook
2009, International Journal of Coal Geology (77) 294-309
Thermal maturity was determined for about 120 core, cuttings, and outcrop samples to investigate the potential for coalbed gas resources in Pennsylvanian strata of north-central Texas. Shallow (< 600??m; 2000??ft) coal and carbonaceous shale cuttings samples from the Middle-Upper Pennsylvanian Strawn, Canyon, and Cisco Groups in Archer and Young Counties...
The genomic transcriptional response of female fathead minnows (Pimephales promelas) to an acute exposure to the androgen, 17β-trenbolone
Jennifer Dorts, Cathy A. Richter, Maureen K. Wright-Osment, Mark R. Ellersieck, Barbara J. Carter, Donald E. Tillitt
2009, Aquatic Toxicology (91) 44-53
We investigated the genomic transcriptional response of female fathead minnows (Pimephales promelas) to an acute (4 days) exposure to 0.1 or 1.0 ??g/L of 17??-trenbolone (TB), the active metabolite of an anabolic androgenic steroid used as a growth promoter in cattle and a contaminant of concern in aquatic systems. Our...
Can pelagic forage fish and spawning cisco (Coregonus artedi) biomass in the western arm of Lake Superior be assessed with a single summer survey?
D.L. Yule, J.D. Stockwell, D.R. Schreiner, L.M. Evrard, M. Balge, T.R. Hrabik
2009, Fisheries Research (96) 39-50
Management efforts to rehabilitate lake trout Salvelinus namaycush in Lake Superior have been successful and the recent increase in their numbers has led to interest in measuring biomass of pelagic prey fish species important to these predators. Lake Superior cisco Coregonus artedi currently support roe fisheries and determining the sustainability...
Status and trends of the Lake Huron deepwater demersal fish ommunity, 2008
Edward F. Roseman, Timothy P. O’Brien, Stephen C. Riley, Steven A. Farha, John R. French
2009, Conference Paper
The U.S.Geological Survey Great Lakes Science Center has conducted trawl surveys to assess annual changes in the deepwater demersal fish community of Lake Huron since 1973. Since 1992, surveys have been carried out using a 21 m wing trawl towed on-contour at depths ranging from 9 to 110 m on...
Preparing a population for an earthquake like Chi-Chi: The Great Southern California ShakeOut
Lucile M. Jones, The ShakeOut Team
2009, Conference Paper, Improving earthquake mitigation through innovations and applications in seismic science, engineering, communication, and response, Proceedings of a U.S.-Iran seismic workshop
The Great Southern California ShakeOut was a week of special events featuring the largest earthquake drill in United States history. On November 13, 2008, over 5 million southern Californians pretended that a magnitude-7.8 earthquake had occurred and practiced actions that could reduce its impact on their lives. The primary message...
Behavior of steelhead fry in a laboratory stream is affected by fish density but not rearing environment
Stephen C. Riley, Christopher P. Tatara, Barry A. Berejikian, Thomas A. Flagg
2009, North American Journal of Fisheries Management (29) 1806-1818
We quantified the aggression, feeding, dominance, position choice, and territory size of naturally reared steelhead Oncorhynchus mykiss fry stocked with two types of hatchery-reared fry (from conventional and enriched rearing environments) at two densities in experimental flumes to determine how rearing environment and fish density affect the behavior of steelhead...
PCBs and DDE in tree swallow (Tachycineta bicolor) eggs and nestlings from an estuarine PCB superfund site, New Bedford Harbor, MA, U.S.A.
Saro Jayaraman, Diane E. Nacci, Denise M. Champlin, Richard J. Pruell, Kenneth J. Rocha, Christine M. Custer, Thomas W. Custer, Mark Cantwell
2009, Environmental Science & Technology (43) 8387-8392
While breeding tree swallows (Tachycineta bicolor) have been used as biomonitors for freshwater sites, we report the first use of this species to assess contaminant bioaccumulation from estuarine breeding grounds into these aerial insectivores. Eggs and nestlings were collected from nest boxes in a polychlorinated biphenyl (PCB) contaminated estuary, the...
Modeling hazardous mass flows Geoflows09: Mathematical and computational aspects of modeling hazardous geophysical mass flows; Seattle, Washington, 9–11 March 2009
Richard M. Iverson, Randall J. LeVeque
2009, Eos, Earth and Space Science News (90) 201-201
A recent workshop at the University of Washington focused on mathematical and computational aspects of modeling the dynamics of dense, gravity-driven mass movements such as rock avalanches and debris flows. About 30 participants came from seven countries and brought diverse backgrounds in geophysics; geology; physics; applied and computational mathematics; and...
Phylogeographic reconstruction of a bacterial species with high levels of lateral gene transfer
T. Pearson, P. Giffard, S. Beckstrom-Sternberg, R. Auerbach, H. Hornstra, A. Tuanyok, E.P. Price, M.B. Glass, B. Leadem, J. S. Beckstrom-Sternberg, G.J. Allan, J.T. Foster, D.M. Wagner, R.T. Okinaka, S.H. Sim, O. Pearson, Z. Wu, J. Chang, R. Kaul, A.R. Hoffmaster, T.S. Brettin, R.A. Robison, M. Mayo, J.E. Gee, P. Tan, B.J. Currie, P. Keim
2009, BMC Biology (7)
Background: Phylogeographic reconstruction of some bacterial populations is hindered by low diversity coupled with high levels of lateral gene transfer. A comparison of recombination levels and diversity at seven housekeeping genes for eleven bacterial species, most of which are commonly cited as having high levels of lateral gene transfer shows...
How the continents deform: The evidence from tectonic geodesy
Wayne R. Thatcher
2009, Annual Review of Earth and Planetary Sciences (37) 237-262
Space geodesy now provides quantitative maps of the surface velocity field within tectonically active regions, supplying constraints on the spatial distribution of deformation, the forces that drive it, and the brittle and ductile properties of continental lithosphere. Deformation is usefully described as relative motions among elastic blocks and...
