Organochlorine pesticide, polychlorinated biphenyl, trace element and metal residues in bird eggs from Salton Sea, California, 2004
Charles J. Henny, T. W. Anderson, J.J. Crayon
2008, Hydrobiologia (604) 137-149
The Salton Sea is a highly eutrophic, hypersaline terminal lake that receives inflows primarily from agricultural drainages in the Imperial and Coachella valleys. Impending reductions in water inflow at Salton Sea may concentrate existing contaminants which have been a concern for many years, and result in higher exposure to birds....
The effect of variations in relative spectral response on the retrieval of land surface parameters from multiple sources of remotely sensed imagery
D. J. Meyer, G. Chander
2008, Conference Paper, International Geoscience and Remote Sensing Symposium (IGARSS)
Airborne visible infrared imaging spectrometer (AVIRIS) images, collected over Sioux Falls, South Dakota, were used to quantify the effect of spectral response on different surface materials and to develop spectral "figures-of-merit" for spectral responses covering similar, but not identical spectral bands. In this simulation, AVIRIS images...
Wetlands as principal zones of methylmercury production in southern Louisiana and the Gulf of Mexico region
B.D. Hall, G. R. Aiken, D. P. Krabbenhoft, M. Marvin-DiPasquale, C.M. Swarzenski
2008, Environmental Pollution (154) 124-134
It is widely recognized that wetlands, especially those rich in organic matter and receiving appreciable atmospheric mercury (Hg) inputs, are important sites of methylmercury (MeHg) production. Extensive wetlands in the southeastern United States have many ecosystem attributes ideal for promoting high MeHg production rates; however, relatively few mercury cycling studies...
Talc friction in the temperature range 25°–400 °C: relevance for fault-zone weakening
Diane E. Moore, David A. Lockner
2008, Tectonophysics (449) 120-132
Talc is one of the weakest minerals that is associated with fault zones. Triaxial friction experiments conducted on water-saturated talc gouge at room temperature yield values of the coefficient of friction, μ(shear stress, τ/effective normal stress, σ′N) in the range 0.16–0.23, and μ increases with increasing σ′N. Talc gouge heated to temperatures of 100°–400 °C is...
Scaling hyporheic exchange and its influence on biogeochemical reactions in aquatic ecosystems
Ben L. O’Connor, Judson W. Harvey
2008, Water Resources Research (44)
Hyporheic exchange and biogeochemical reactions are difficult to quantify because of the range in fluid‐flow and sediment conditions inherent to streams, wetlands, and nearshore marine ecosystems. Field measurements of biogeochemical reactions in aquatic systems are impeded by the difficulty of measuring hyporheic flow simultaneously with chemical gradients in sediments. Simplified...
A linked hydrodynamic and water quality model for the Salton Sea
E.G. Chung, S.G. Schladow, J. Perez-Losada, Dale M. Robertson
2008, Hydrobiologia (604) 57-75
A linked hydrodynamic and water quality model was developed and applied to the Salton Sea. The hydrodynamic component is based on the one-dimensional numerical model, DLM. The water quality model is based on a new conceptual model for nutrient cycling in the Sea, and simulates temperature, total suspended sediment concentration,...
Methane-producing microbial community in a coal bed of the Illinois Basin
D. Strapoc, F.W. Picardal, C. Turich, I. Schaperdoth, J. L. Macalady, J.S. Lipp, Y.-S. Lin, T.F. Ertefai, F. Schubotz, K.-U. Hinrichs, Maria Mastalerz, A. Schimmelmann
2008, Applied and Environmental Microbiology (74) 2424-2432
A series of molecular and geochemical studies were performed to study microbial, coal bed methane formation in the eastern Illinois Basin. Results suggest that organic matter is biodegraded to simple molecules, such as H 2 and CO2, which fuel methanogenesis and the generation of large coal bed methane reserves. Small-subunit...
Diurnal variations in, and influences on, concentrations of particulate and dissolved arsenic and metals in the mildly alkaline Wallkill River, New Jersey, USA
J. L. Barringer, T.P. Wilson, Z. Szabo, J.L. Bonin, J.M. Fischer, N.P. Smith
2008, Environmental Geology (53) 1183-1199
Diurnal variations in particulate and dissolved As and metal concentrations were observed in mildly alkaline water from a wetlands site on the Wallkill River in northwestern New Jersey. The site, underlain by glacial sediments over dolomite bedrock, is 10 km downstream from a mined area of the Franklin Marble, host...
Habitat features affect bluehead sucker, flannelmouth sucker, and roundtail chub across a headwater tributary system in the Colorado River Basin
M.R. Bower, W.A. Hubert, F.J. Rahel
2008, Journal of Freshwater Ecology (23) 347-357
We assessed the distributions of three species of conservation concern, bluehead sucker (Catostomus discobolus), flannelmouth sucker (Catostomus latipinnis), and roundtail chub (Gila robusta), relative to habitat features across a headwater tributary system of the Colorado River basin in Wyoming. We studied the upper Muddy Creek watershed, Carbon County, portions of...
Monitoring lingering oil from the Exxon Valdez spill on Gulf of Alaska armored beaches and mussel beds sixteen years post-spill
G.V. Irvine, D.H. Mann, J.W. Short
2008, Report, TOXLINE
Final Rept. ; Prepared in Cooperation With Alaska Univ., Fairbanks. Inst. of Arctic Biology. Sponsored By National Marine Fisheries Service, Juneau, Ak. AlaskaFisheries Science Center. ; Stranded Exxon Valdez Oil Has Persisted for 16 Years At Boulder-Armored Beach Sites Along National Park Coastlines Bordering the Gulf of Alaska. These Sites Are Up to...
Differences in evaporation between a floating pan and class a pan on land
J.R. Masoner, D.I. Stannard, S. C. Christenson
2008, Journal of the American Water Resources Association (44) 552-561
Research was conducted to develop a method for obtaining floating pan evaporation rates in a small (less than 10,000 m2) wetland, lagoon, or pond. Floating pan and land pan evaporation data were collected from March 1 to August 31, 2005, at a small natural wetland located in the alluvium of the...
Microhabitat use by brook trout inhabiting small tributaries and a large river main stem: Implications for stream habitat restoration in the central Appalachians
Jeff L. Hansbarger, J. Todd Petty, Patricia M. Mazik
2008, Proceedings of the Southeastern Association of Fish and Wildlife Agencies (62) 142-148
Brook trout (Salvelinus fontinalis) habitat restoration is needed across a range of stream sizes; however, studies quantifying brook trout habitat preferences in streams of differing sizes are rare. We used radio-telemetry to quantify adult brook trout microhabitat use in a central Appalachian watershed, the upper Shavers Fork of the Cheat...
Hydrodynamic implications of textural trends in sand deposits of the 2004 tsunami in Sri Lanka
R.A. Morton, J.R. Goff, S.L. Nichol
2008, Sedimentary Geology (207) 56-64
Field observations and sediment samples at a coastal-plain setting in southeastern Sri Lanka were used to document the erosional and depositional impacts of the 2004 Indian Ocean tsunami and to interpret the hydrodynamic processes that produced an extensive sand-sheet deposit. Tsunami deposit thicknesses ranged from 6 to 22??cm with thickness...
Sulfide oxidation and distribution of metals near abandoned copper mines in coastal environments, Prince William Sound, Alaska, USA
R.A. Koski, L. Munk, A. L. Foster, Wayne C. Shanks III, L.L. Stillings
2008, Applied Geochemistry (23) 227-254
The oxidation of sulfide-rich rocks, mostly leftover debris from Cu mining in the early 20th century, is contributing to metal contamination of local coastal environments in Prince William Sound, Alaska. Analyses of sulfide, water, sediment, precipitate and biological samples from the Beatson, Ellamar, and Threeman mine sites show that acidic...
Joint variability of global runoff and global sea surface temperatures
G.J. McCabe, D.M. Wolock
2008, Journal of Hydrometeorology (9) 816-824
Global land surface runoff and sea surface temperatures (SST) are analyzed to identify the primary modes of variability of these hydroclimatic data for the period 1905-2002. A monthly water-balance model first is used with global monthly temperature and precipitation data to compute time series of annual gridded runoff for the...
A 1000-year sediment record of recurring hypoxia off the Mississippi River: The potential role of terrestrially-derived organic matter inputs
P.W. Swarzenski, P.L. Campbell, L.E. Osterman, R.Z. Poore
2008, Marine Chemistry (109) 130-142
A suite of inorganic and organic geochemical tracers and a low-oxygen tolerant benthic faunal index ('PEB') were measured in a 14C-dated 2+??m long gravity core collected on the Louisiana shelf adjacent to the Mississippi River delta to study potential millennium-scale low-oxygen events. Periodic down-core excursions in the PEB index throughout...
Fish assemblage, density, and growth in lateral habitats within natural and regulated sections of Washington's Elwha River prior to dam removal
P.J. Connolly, S.J. Brenkman
2008, Northwest Science (82) 107-118
We characterized seasonal fish assemblage, relative density, and growth in river margins above and between two Elwha River dams scheduled for removal. Fish assemblage and relative density differed in the lateral habitats of the middle-regulated and upper-unregulated sections of the Elwha River. Rainbow trout was the numerically dominant salmonid in...
Chronic and episodic acidification of Adirondack streams from acid rain in 2003-2005
G.B. Lawrence, K. M. Roy, Barry P. Baldigo, H. A. Simonin, S. B. Capone, J.W. Sutherland, S. A. Nierzwicki-Bauer, C.W. Boylen
2008, Journal of Environmental Quality (37) 2264-2274
Limited information is available on streams in the Adirondack region of New York, although streams are more prone to acidification than the more studied Adirondack lakes. A stream assessment was therefore undertaken in the Oswegatchie and Black River drainages; an area of 4585 km2 in the western part of the...
Geochemical investigation of weathering processes in a forested headwater catchment: Mass-balance weathering fluxes
B.F. Jones, J.S. Herman
2008, Conference Paper, Mineralogical Magazine
Geochemical research on natural weathering has often been directed towards explanations of the chemical composition of surface water and ground water resulting from subsurface water-rock interactions. These interactions are often defined as the incongruent dissolution of primary silicates, such as feldspar, producing secondary weathering products, such as clay minerals and...
Climatic and anthropogenic factors affecting river discharge to the global ocean, 1951-2000
John D. Milliman, K.L. Farnsworth, P. D. Jones, K.H. Xu, L.C. Smith
2008, Global and Planetary Change (62) 187-194
During the last half of the 20th century, cumulative annual discharge from 137 representative rivers (watershed areas ranging from 0.3 to 6300 ?? 103??km2) to the global ocean remained constant, although annual discharge from about one-third of these rivers changed by more than 30%. Discharge trends for many rivers reflected...
Modeling potential habitats for alien species Dreissena polymorpha in continental USA
Li Mingyang, Ju Yunwei, Sunil Kumar, Thomas J. Stohlgren
2008, Acta Ecologica Sinica (28) 4253-4258
The effective measure to minimize the damage of invasive species is to block the potential invasive species to enter into suitable areas. 1864 occurrence points with GPS coordinates and 34 environmental variables from Daymet datasets were gathered, and 4 modeling methods, i.e., Logistic Regression (LR), Classification and Regression Trees (CART),...
Distribution and spawning dynamics of capelin (Mallotus villosus) in Glacier Bay, Alaska: A cold water refugium
Mayumi L. Arimitsu, John F. Piatt, Michael A. Litzow, Alisa A. Abookire, Marc D. Romano, Martin D. Robards
2008, Fisheries Oceanography (17) 137-146
Pacific capelin (Mallotus villosus) populations declined dramatically in the Northeastern Pacific following ocean warming after the regime shift of 1977, but little is known about the cause of the decline or the functional relationships between capelin and their environment. We assessed the distribution and abundance of spawning, non-spawning adult and...
Survival of the faucet snail after chemical disinfection, pH extremes, and heated water bath treatments
A.J. Mitchell, Rebecca A. Cole
2008, North American Journal of Fisheries Management (28) 1597-1600
The faucet snail Bithynia tentaculata, a nonindigenous aquatic snail from Eurasia, was introduced into Lake Michigan in 1871 and has spread to the mid-Atlantic states, the Great Lakes region, Montana, and most recently, the Mississippi River. The faucet snail serves as intermediate host for several trematodes that have caused large-scale...
The role of lecithin cholesterol acyltransferase and organic substances from coal in the etiology of Balkan endemic nephropathy: A new hypothesis
N.M. Pavlovic, W. H. Orem, C. A. Tatu, H.E. Lerch, J.E. Bunnell, G. L. Feder, E.N. Kostic, V.L. Ordodi
2008, Food and Chemical Toxicology (46) 949-954
Balkan endemic nephropathy (BEN) occurs in Serbia, Bulgaria, Romania, Bosnia and Herzegovina, and Croatia. BEN has been characterized as a chronic, slowly progressive renal disease of unknown etiology. In this study, we examined the influence of soluble organic compounds in drinking water leached from Pliocene lignite from BEN-endemic areas on...
Historical and current environmental influences on an endemic great plains fish
John R. Fischer, C.P. Paukert
2008, American Midland Naturalist (159) 364-377
Native fishes of the Great Plains are at risk of decline due to disturbances to physical habitat caused by changes in land and water use, as well as shifts in species assemblages driven by the invasion of introduced species with the loss of natives. We used historical and current fish...
