Methyl tert-butyl ether occurrence and related factors in public and private wells in southeast New Hampshire
Joseph D. Ayotte, Denise M. Argue, Frederick J. McGarry
2005, Environmental Science & Technology (39) 9-16
The occurrence of methyl tert-butyl ether (MTBE) in water from public wells in New Hampshire has increased steadily over the past several years. Using a laboratory reporting level of 0.2 μg/L, 40% of samples from public wells and 21% from private wells in southeast New Hampshire have measurable concentrations of MTBE....
Microsatellite DNA markers for delineating population structure and kinship among the endangered Kirtland's warbler (Dendroica kirtlandii)
T.L. King, M.S. Eackles, A.P. Henderson, Carol I. Bocetti, D. Currie, J.M. Wunderle Jr.
2005, Molecular Ecology Notes (5) 569-571
We document the isolation and characterization of 23 microsatellite DNA markers for the endangered Kirtland's warbler (Dendroica kirtlandii), a Nearctic/Neotropical migrant passerine. This suite of markers revealed moderate to high levels of allelic diversity (averaging 7.7 alleles per locus) and heterozygosity (averaging 72%). Genotypic frequencies at 22 of 23 (95%)...
Automated mapping of hammond's landforms
Alisa L. Gallant, D.D. Brown, R.M. Hoffer
2005, IEEE Geoscience and Remote Sensing Letters (2) 384-388
We automated a method for mapping Hammond's landforms over large landscapes using digital elevation data. We compared our results against Hammond's published landform maps, derived using manual interpretation procedures. We found general agreement in landform patterns mapped by the manual and the automated approaches, and very close agreement in characterization...
Assessing the competitive ability of Japanese stilt grass, Microstegium vimineum (Trin.) A. Camus
S. A. Leicht, J. A. Silander Jr., K. Greenwood
2005, Journal of the Torrey Botanical Society (132) 573-580
Microstegium vimineum (Japanese stilt grass) is an invasive grass in the eastern half of the United States which can form dense monocultures in forest understories, displacing native species. Although the loss of native species has been observed in the field, the actual competitive ability of this grass has not been...
Extraordinary flood response of a small urban watershed to short-duration convective rainfall
J. A. Smith, A.J. Miller, M.L. Baeck, P.A. Nelson, G. T. Fisher, K.L. Meierdiercks
2005, Journal of Hydrometeorology (6) 599-617
The 9.1 km2 Moores Run watershed in Baltimore, Maryland, experiences floods with unit discharge peaks exceeding 1 m3 s-1 km-2 12 times yr-1, on average. Few, if any, drainage basins in the continental United States have a higher frequency. A thunderstorm system on 13 June 2003 produced the record flood...
Petroscirtes pylei, a new saber-toothed blenny from the Fiji Islands (Teleostei: Blenniidae)
William F. Smith-Vaniz
2005, Zootaxa (1046) 29-36
Petroscirtes pylei is described from three specimens, 20.3–40.9 mm SL, obtained from a deepwater reef off Suva, Viti Levu, Fiji Islands. It is distinguished from all other congeners by its color pattern, including the presence of two dark body stripes, the lower one broadly extending onto the anal fin, and the dorsal...
Screening and evaluation of polymers as flocculation aids for the treatment of aquacultural effluents
J.M. Ebeling, K.L. Rishel, P.L. Sibrell
2005, Aquacultural Engineering (33) 235-249
As environmental regulations become more stringent, environmentally sound waste management and disposal are becoming increasingly more important in all aquaculture operations. One of the primary water quality parameters of concern is the suspended solids concentration in the discharged effluent. For example, EPA initially considered the establishment of numerical limitations for...
Net alkalinity and net acidity 1: Theoretical considerations
C.S. Kirby, C.A. Cravotta III
2005, Applied Geochemistry (20) 1920-1940
Net acidity and net alkalinity are widely used, poorly defined, and commonly misunderstood parameters for the characterization of mine drainage. The authors explain theoretical expressions of 3 types of alkalinity (caustic, phenolphthalein, and total) and acidity (mineral, CO2, and total). Except for rarely-invoked negative alkalinity, theoretically defined total alkalinity is...
Net alkalinity and net acidity 2: Practical considerations
C.S. Kirby, C.A. Cravotta III
2005, Applied Geochemistry (20) 1941-1964
The pH, alkalinity, and acidity of mine drainage and associated waters can be misinterpreted because of the chemical instability of samples and possible misunderstandings of standard analytical method results. Synthetic and field samples of mine drainage having various initial pH values and concentrations of dissolved metals and alkalinity were titrated...
U-Pb dating of large zircons in low-temperature jadeitite from the Osayama serpentinite melange, southwest Japan: Insights into the timing of serpentinization
T. Tsujimori, J. G. Liou, J. Wooden, T. Miyamoto
2005, International Geology Review (47) 1048-1057
Crystals of zircon up to 3 mm in length occur in jadeitite veins in the Osayama serpentinite mélange, Southwest Japan. The zircon porphyroblasts show pronounced zoning, and are characterized by both low Th/U ratios (0.2-0.8) and low Th and U abundances (Th = 1-81 ppm; U = 6-149 ppm). They...
Virus fate and transport during artificial recharge with recycled water
Robert Anders, C.V. Chrysikopoulos
2005, Water Resources Research (41)
A field‐scale experiment was conducted at a research site using bacterial viruses (bacteriophage) MS2 and PRD1 as surrogates for human viruses, bromide as a conservative tracer, and tertiary‐treated municipal wastewater (recycled water) to investigate the fate and transport of viruses during artificial recharge. Observed virus concentrations were fitted using a...
Quantitative assessment of benthic food resources for juvenile Gulf sturgeon, Acipenser oxyrinchus desotoi in the Suwannee River estuary, Florida, USA
R. A. Brooks, K. J. Sulak
2005, Estuaries (28) 767-775
Gulf sturgeon, Acipenser oxyrinchus desotoi, forage extensively in the Suwannee River estuary following emigration out of the Suwannee River, Florida. While in the estuary, juvenile Gulf sturgeon primarily feed on benthic infauna. In June–July 2002 and February–April 2003, random sites within the estuary were sampled for benthic macrofauna (2002 n...
Temporal variation in photosynthetic pigments and UV-absorbing compounds in shallow populations of two Hawaiian reef corals
I. B. Kuffner
2005, Pacific Science (59) 561-580
As we seek to understand the physiological mechanisms of coral bleaching, it is important to understand the background temporal variation in photosynthetic pigments and photoprotective compounds that corals exhibit. In this study, reef flat populations of two hermatypic coral species, Montipora capitata (Dana, 1846) and Porites compressa Dana, 1846, were...
Ontogenetic behavior and dispersal of Sacramento River white sturgeon, Acipenser transmontanus, with a note on body color
B. Kynard, E. Parker
2005, Environmental Biology of Fishes (74) 19-30
We studied Sacramento River white sturgeon, Acipenser transmontanus, in the laboratory to develop a conceptual model of ontogenetic behavior and provide insight into probable behavior of wild sturgeon. After hatching, free embryos initiated a low intensity, brief downstream dispersal during which fish swam near the bottom and were photonegative. The...
Channelization and floodplain forests: Impacts of accelerated sedimentation and valley plug formation on floodplain forests of the Middle Fork Forked Deer River, Tennessee, USA
S.N. Oswalt, S.L. King
2005, Forest Ecology and Management (215) 69-83
We evaluated the severe degradation of floodplain habitats resulting from channelization and concomitant excessive coarse sedimentation on the Middle Fork Forked Deer River in west Tennessee from 2000 to 2003. Land use practices have resulted in excessive sediment in the tributaries and river system eventually resulting in sand deposition on...
Using fish biomarkers to monitor improvements in environmental quality
D.E. Facey, V. S. Blazer, M.M. Gasper, C.L. Turcotte
2005, Journal of Aquatic Animal Health (17) 263-266
The percentage of splenic tissue occupied by macrophage aggregates and hepatosomatic index (HSI) were evaluated in rock bass Ambloplites rupestris from Burlington Harbor, Vermont. In 1992, fish collected from the inner Burlington Harbor area had a significantly greater percentage of splenic tissue occupied by macrophage aggregates and greater HSI than...
Brown treesnake (Boiga irregularis) fact sheet for Pacific Island residents and travelers
Thomas H. Fritts, D.L. Tanner, James Stanford, Teri Kman
2005, Fact Sheet 2005-3109
The brown treesnake is an introduced species on Guam that has become a serious pest. The snakes probably arrived on Guam hidden in ship cargo from the New Guinea area, about 1100 miles to the south. The first sightings were inland from the seaport in the early 1950s. Snakes became...
Stream pH as an abiotic gradient influencing distributions of trout in Pennsylvania streams
P.M. Kocovsky, R.F. Carline
2005, Transactions of the American Fisheries Society (134) 1299-1312
Elevation and stream slope are abiotic gradients that limit upstream distributions of brook trout Salvelinus fontinalis and brown trout Salmo trutta in streams. We sought to determine whether another abiotic gradient, base-flow pH, may also affect distributions of these two species in eastern North America streams. We used historical data...
Ordovician "sphinctozoan" sponges from Prince of Wales Island, southeastern Alaska
J.K. Rigby, Susan M. Karl, R. B. Blodgett, J.F. Baichtal
2005, Journal of Paleontology (79) 862-870
A faunule of silicified hypercalcified "sphinctozoan" sponges has been recovered from a clast of Upper Ordovician limestone out of the Early Devonian Karheen Formation on Prince of Wales Island in southeastern Alaska. Included in the faunule are abundant examples of the new genus Girtyocoeliana, represented by Girtyocoeliana epiporata (Rigby and...
Breeding ecology of Spectacled Eiders Somateria fischeri in Northern Alaska
J. Bart, S.L. Earnst
2005, Wildfowl (55) 83-98
Spectacled Eiders Somateria fischeri were studied on the Colville River delta during 1994-1999, prior to oil field development, to document aspects of breeding biology that are poorly known, especially for northern-nesting populations. Both sexes arrived June 6-12; many males remained for only about 10 days. Density on the 178-km2 study...
Mapping impervious surface type and sub-pixel abundance using Hyperion hyperspectral imagery
James A. Falcone, R. Gomez
2005, Geocarto International (20) 3-10
Impervious surfaces have been identified as an important and quantifiable indicator of environmental degradation in urban settings. A number of research efforts have been directed at mapping impervious surface type using multispectral imagery. To date, however, no studies have compared equivalent techniques using multispectral and hyperspectral imagery to that end....
Petroleum geochemistry of oil and gas from Barbados: Implications for distribution of Cretaceous source rocks and regional petroleum prospectivity
R.J. Hill, Christopher J. Schenk
2005, Marine and Petroleum Geology (22) 917-943
Petroleum produced from the Barbados accretionary prism (at Woodbourne Field on Barbados) is interpreted as generated from Cretaceous marine shale deposited under normal salinity and dysoxic conditions rather than from a Tertiary source rock as previously proposed. Barbados oils correlate with some oils from eastern Venezuela and Trinidad that are...
Transboundary impacts on regional ground water modeling in Texas
K. Rainwater, J. Stovall, S. Frailey, L. Urban
2005, Conference Paper, Ground Water
Recent legislation required regional grassroots water resources planning across the entire state of Texas. The Texas Water Development Board (TWDB), the state's primary water resource planning agency, divided the state into 16 planning regions. Each planning group developed plans to manage both ground water and surface water sources and to...
A decrease in discharge-normalized DOC export by the Yukon River during summer through autumn
Robert G. Striegl, G. R. Aiken, M.M. Dornblaser, P.A. Raymond, K.P. Wickland
2005, Geophysical Research Letters (32) 1-4
Climate warming is having a dramatic effect on the vegetation distribution and carbon cycling of terrestrial subarctic and arctic ecosystems. Here, we present hydrologic evidence that warming is also affecting the export of dissolved organic carbon and bicarbonate (DOC and HCO3−) at the large basin scale. In the 831,400 km2 Yukon...
The South China sea margins: Implications for rifting contrasts
D.E. Hayes, S.S. Nissen
2005, Earth and Planetary Science Letters (237) 601-616
Implications regarding spatially complex continental rifting, crustal extension, and the subsequent evolution to seafloor spreading are re-examined for the northern and southern-rifted margins of the South China Sea. Previous seismic studies have shown dramatic differences in the present-day crustal thicknesses as the manifestations of the strain experienced during the rifting...
