Sex effect on polychlorinated biphenyl concentrations in fish: a synthesis
C.P. Madenjian
2011, Fish and Fisheries (12) 451-460
Polychlorinated biphenyls (PCBs) accumulate in fish primarily via food intake, and therefore, PCBs serve as a chemical tracer for food consumption. Sex differences in PCB concentrations of fish have been attributed to the following three mechanisms: (i) females losing a substantial portion of their PCB body burden during spawning and...
Coral skeletal carbon isotopes (δ13C and Δ14C) record the delivery of terrestrial carbon to the coastal waters of Puerto Rico
R.P. Moyer, A.G. Grottoli
2011, Coral Reefs (30) 791-802
Tropical small mountainous rivers deliver a poorly quantified, but potentially significant, amount of carbon to the world’s oceans. However, few historical records of land–ocean carbon transfer exist for any region on Earth. Corals have the potential to provide such records, because they draw on dissolved inorganic carbon (DIC) for calcification....
Pressure waves in a supersaturated bubbly magma
I. Kurzon, V. Lyakhovsky, O. Navon, B. Chouet
2011, Geophysical Journal International (187) 421-438
We study the interaction of acoustic pressure waves with an expanding bubbly magma. The expansion of magma is the result of bubble growth during or following magma decompression and leads to two competing processes that affect pressure waves. On the one hand, growth in vesicularity leads to increased damping and...
Bias-adjusted satellite-based rainfall estimates for predicting floods: Narayani Basin
M.S. Shrestha, G. A. Artan, S.R. Bajracharya, D.K. Gautam, S.A. Tokar
2011, Journal of Flood Risk Management (4) 360-373
In Nepal, as the spatial distribution of rain gauges is not sufficient to provide detailed perspective on the highly varied spatial nature of rainfall, satellite‐based rainfall estimates provides the opportunity for timely estimation. This paper presents the flood prediction of Narayani Basin at the Devghat hydrometric station (32 000 km2) using bias‐adjusted...
Phylogeography of a vanishing North American songbird: The Painted Bunting (Passerina ciris)
C.A. Herr, P.W. Sykes Jr., J. Klicka
2011, Conservation Genetics (12) 1395-1410
The breeding distribution of Painted Buntings (Passerina ciris) is comprised of two allopatric populations separated by a 550-km distributional gap in the southeastern United States. Curiously, the boundary between the two recognized P. ciris subspecies does not separate the two allopatric breeding populations but instead runs roughly through the center of the...
Scented guide ropes as a method to enhance brown treesnake (Boiga irregularis) trap capture success on Guam
L.C. Mason, J. A. Savidge, G.H. Rodda, A. A. Yackel Adams
2011, Journal of Herpetology (45) 308-312
Current methods for controlling the invasive Brown Treesnake (Boiga irregularis) on Guam include a modified minnow trap with a live mouse lure. We investigated the effects on capture success of augmenting these traps with scented guide ropes leading to trap entrances. Initial screening of scent preferences was based on...
Comparative phylogeography of a coevolved community: Concerted population expansions in Joshua trees and four yucca moths
Christopher Irwin Smith, Shantel Tank, William Godsoe, Jim Levenick, Eva Strand, Todd C. Esque, Olle Pellmyr
2011, PLoS ONE (6)
Comparative phylogeographic studies have had mixed success in identifying common phylogeographic patterns among co-distributed organisms. Whereas some have found broadly similar patterns across a diverse array of taxa, others have found that the histories of different species are more idiosyncratic than congruent. The variation in the results of comparative phylogeographic...
Bird community response to filter strips in Maryland
P.J. Blank, G.P. Dively, D.E. Gill, C.A. Rewa
2011, Journal of Wildlife Management (75) 116-125
Filter strips are strips of herbaceous vegetation planted along agricultural field margins adjacent to streams or wetlands and are designed to intercept sediment, nutrients, and agrichemicals. Roughly 16,000 ha of filter strips have been established in Maryland through the United States Department of Agriculture's Conservation Reserve Enhancement Program. Filter strips...
Viruses and bacteria in karst and fractured rock aquifers in east Tennessee, USA
T.B. Johnson, L.D. McKay, A.C. Layton, S.W. Jones, G.C. Johnson, J.L. Cashdollar, D.R. Dahling, L.F. Villegas, G.S. Fout, D.E. Williams, G. Sayler
2011, Ground Water (49) 98-110
A survey of enteric viruses and indicator bacteria was carried out in eight community water supply sources (four wells and four springs) in East Tennessee. Seven sites derived their water from carbonate aquifers and one from fractured sandstone. Four of the sites were deemed "low-risk" based on prior monitoring of...
Nutrient loadings to streams of the Continental United States from municipal and industrial effluent
M.A. Maupin, T. Ivahnenko
2011, Journal of the American Water Resources Association (47) 950-964
Data from the United States Environmental Protection Agency Permit Compliance System national database were used to calculate annual total nitrogen (TN) and total phosphorus (TP) loads to surface waters from municipal and industrial facilities in six major regions of the United States for 1992, 1997, and 2002. Concentration and effluent...
Near-surface shear-wave velocity measurements in unlithified sediment
B.T. Richards, D. Steeples, R. Miller, J. Ivanov, S. Peterie, S.D. Sloan, J.R. McKenna
2011, SEG Technical Program Expanded Abstracts (30) 1416-1420
S-wave velocity can be directly correlated to material stiffness and lithology making it a valuable physical property that has found uses in construction, engineering, and environmental projects. This study compares different methods for measuring S-wave velocities, investigating and identifying the differences among the methods' results, and prioritizing the different methods...
Apogean-perigean signals encoded in tidal flats at the fluvio-estuarine transition of Glacier Creek, Turnagain Arm, Alaska; implications for ancient tidal rhythmites
S.F. Greb, A.W. Archer, D.G. Deboer
2011, Sedimentology (58) 1434-1452
Turnagain Arm is a macrotidal fjord‐style estuary. Glacier Creek is a small, glacially fed stream which enters the estuary tangentially near Girdwood, Alaska. Trenches and daily sedimentation measurements were made in a mudflat along the fluvio–estuarine transition of Glacier Creek during several summers since 2003. Each year, the flats appear...
Sparrow modeling to understand water-quality conditions in major regions of the United States: A featured collection introduction
S. D. Preston, R. B. Alexander, D.M. Wolock
2011, Journal of the American Water Resources Association (47) 887-890
No abstract available....
Collection of mammal manure and other Debris by nesting Burrowing Owls
M. D. Smith, C.J. Conway
2011, Journal of Raptor Research (45) 220-228
Burrowing Owls (Athene cunicularia) routinely collect and scatter dry manure of mammals around their nesting burrows. Recent studies have suggested this behavior attracts insect prey to the nesting burrow. However, some Burrowing Owls do not use manure, but instead, collect and scatter other materials (e.g., grass, moss, paper, plastic)...
Modeled sources, transport, and accumulation of dissolved solids in water resources of the southwestern United States
D.W. Anning
2011, Journal of the American Water Resources Association (47) 1087-1109
Information on important source areas for dissolved solids in streams of the southwestern United States, the relative share of deliveries of dissolved solids to streams from natural and human sources, and the potential for salt accumulation in soil or groundwater was developed using a SPAtially Referenced Regressions On Watershed attributes...
Modules based on the geochemical model PHREEQC for use in scripting and programming languages
S.R. Charlton, D.L. Parkhurst
2011, Computers & Geosciences (37) 1653-1663
The geochemical model PHREEQC is capable of simulating a wide range of equilibrium reactions between water and minerals, ion exchangers, surface complexes, solid solutions, and gases. It also has a general kinetic formulation that allows modeling of nonequilibrium mineral dissolution and precipitation,...
Modeling the height of young forests regenerating from recent disturbances in Mississippi using Landsat and ICESat data
Ainong Li, Chengquan Huang, Guoqing Sun, Hua Shi, Chris Toney, Zhiliang Zhu, Matthew G. Rollins, Samuel N. Goward, Jeffery G. Masek
2011, Remote Sensing of Environment (115) 1837-1849
Many forestry and earth science applications require spatially detailed forest height data sets. Among the various remote sensing technologies, lidar offers the most potential for obtaining reliable height measurement. However, existing and planned spaceborne lidar systems do not have the capability to produce spatially contiguous, fine resolution forest height maps...
The remarkable occurrence of large rainfall-induced debris flows at two different locations on July 12, 2008, Southern Sierra Nevada, CA, USA
J.V. DeGraff, D.L. Wagner, A.J. Gallegos, M. DeRose, C. Shannon, T. Ellsworth
2011, Landslides (8) 343-353
On July 12, 2008, two convective cells about 155 km apart produced a brief period of intense rainfall triggering large debris flows in the southern Sierra Nevada. The northernmost cell was centered over Oak Creek Canyon, an east-flowing drainage, and its tributaries near Independence, CA, USA. About 5:00 P.M., debris flows...
Activity and stability of immobilized carbonic anhydrase for promoting CO2 absorption into a carbonate solution for post-combustion CO2 capture
S. Zhang, Z. Zhang, Y. Lu, M. Rostam-Abadi, A. Jones
2011, Bioresource Technology (102) 10194-10201
An Integrated Vacuum Carbonate Absorption Process (IVCAP) currently under development could significantly reduce the energy consumed when capturing CO2 from the flue gases of coal-fired power plants. The biocatalyst carbonic anhydrase (CA) has been found to effectively promote the absorption of CO2 into the potassium carbonate solution that would be used in the IVCAP....
Estimating Hydraulic Parameters When Poroelastic Effects Are Significant
S.J. Berg, P. A. Hsieh, W.A. Illman
2011, Ground Water (49) 815-829
For almost 80 years, deformation-induced head changes caused by poroelastic effects have been observed during pumping tests in multilayered aquifer-aquitard systems. As water in the aquifer is released from compressive storage during pumping, the aquifer is deformed both in the horizontal and vertical directions. This deformation in the pumped aquifer...
Adverse foraging conditions may impact body mass and survival of a high Arctic seabird
Ann Harding, Jorg Welcker, Harald Steen, Keith C. Hamer, Alexander S. Kitaysky, Jerome Fort, Sandra L. Talbot, Leslie A. Cornick, Nina J. Karnovsky, Geir W. Gabrielsen, David Gremillet
2011, Oecologia (167) 49-59
Tradeoffs between current reproduction and future survival are widely recognized, but may only occur when food is limited: when foraging conditions are favorable, parents may be able to reproduce without compromising their own survival. We investigated these tradeoffs in the little auk (Alle alle), a small seabird with a single-egg...
Arsenic associations in sediments from shallow aquifers of northwestern Hetao Basin, Inner Mongolia
Y. Deng, Y. Wang, T. Ma, H. Yang, J. He
2011, Environmental Earth Sciences (64) 2001-2011
Understanding the mechanism of arsenic mobilization from sediments to groundwater is important for water quality management in areas of endemic arsenic poisoning, such as the Hetao Basin in Inner Mongolia, northern China. Aquifer geochemistry was characterized at three field sites (SH, HF, TYS) in Hangjinhouqi County of northwestern Hetao Basin....
Native Americans, regional drought and tree Island evolution in the Florida Everglades
C. Bernhardt
2011, Holocene (21) 967-978
This study uses palynologic data to determine the effects of regional climate variability and human activity on the formation and development of tree islands during the last ~4000 years. Although prolonged periods of aridity have been invoked as one mechanism for their formation, Native American land use has also been...
Temperature-associated population diversity in salmon confers benefits to mobile consumers
Casey P. Ruff, Daniel E. Schindle, Jonathan B. Armstrong, Kale T. Bentle, Gabriel T. Brooks, Gordon W. Holtgrieve, Molly T. McGlauflin, Christian E. Torgersen, James E. Seeb
2011, Ecology (92) 2073-2084
Habitat heterogeneity can generate intraspecific diversity through local adaptation of populations. While it is becoming increasingly clear that population diversity can increase stability in species abundance, less is known about how population diversity can benefit consumers that can integrate across population diversity in their prey. Here we demonstrate cascading effects...
Black-footed ferrets and Siberian polecats as ecological surrogates and ecological equivalents
E. Biggins, Louis R. Hanebury, B.J. Miller, R. A. Powell
2011, Journal of Mammalogy (92) 710-720
Ecologically equivalent species serve similar functions in different communities, and an ecological surrogate species can be used as a substitute for an equivalent species in a community. Siberian polecats (Mustela eversmanii) and black-footed ferrets (M. nigripes) have long been considered ecological equivalents. Polecats also have been used as investigational surrogates...
