Predator functional response and prey survival: Direct and indirect interactions affecting a marked prey population
David A. Miller, J.B. Grand, T.F. Fondell, M. Anthony
2006, Journal of Animal Ecology (75) 101-110
1. Predation plays an integral role in many community interactions, with the number of predators and the rate at which they consume prey (i.e. their functional response) determining interaction strengths. Owing to the difficulty of directly observing predation events, attempts to determine the functional response of predators in natural systems...
Antarctic climate cooling and response of diatoms in glacial meltwater streams
R.M.M. Esposito, S.L. Horn, Diane M. McKnight, M.J. Cox, M.C. Grant, S. A. Spaulding, P.T. Doran, K.D. Cozzetto
2006, Geophysical Research Letters (33)
To understand biotic responses to an Antarctic cooling trend diatom samples from glacial meltwater streams in the McMurdo Dry Valleys, the largest ice-free area in Antarctica. Diatoms are abundant in these streams, and 24 of 40 species have only been found in the Antarctic. The percentage of these Antarctic diatom...
Dependence of soil respiration on soil temperature and soil moisture in successional forests in Southern China
X.-L. Tang, G.-Y. Zhou, S.-G. Liu, D.-Q. Zhang, S.-Z. Liu, Ji Li, C.-Y. Zhou
2006, Journal of Integrative Plant Biology (48) 654-663
The spatial and temporal variations in soil respiration and its relationship with biophysical factors in forests near the Tropic of Cancer remain highly uncertain. To contribute towards an improvement of actual estimates, soil respiration rates, soil temperature, and soil moisture were measured in three successional subtropical forests at the Dinghushan...
High-resolution stratigraphy of a Mississippi subdelta-lobe progradation in the Barataria Bight, north-central Gulf of Mexico
J. G. Flocks, N.F. Ferina, C. Dreher, J. L. Kindinger, D. M. FitzGerald, M.A. Kulp
2006, Journal of Sedimentary Research (76) 429-443
The coastal zone of southeastern Louisiana is the product of numerous cycles of progradation, abandonment, and marine transgression of the Mississippi River delta. Currently, the shoreline in the Barataria Bight is undergoing significant erosion and retreat, and understanding its evolution is crucial in stabilization efforts. This study uses an extensive...
Reproducibility of geochemical and climatic signals in the Atlantic coral Montastraea faveolata
Joseph M. Smith, T. M. Quinn, K.P. Helmle, R. B. Halley
2006, Paleoceanography (21)
Monthly resolved, 41-year-long stable isotopic and elemental ratio time series were generated from two separate heads of Montastraea faveolata from Looe Key, Florida, to assess the fidelity of using geochemical variations in Montastraea, the dominant reef-building coral of the Atlantic, to reconstruct sea surface environmental conditions at this site. The...
Age-related body mass and reproductive measurements of gray wolves in Minnesota
L.D. Mech
2006, Journal of Mammalogy (87) 80-84
Based on 65 free-ranging gray wolves (Canis lupus) of known age and 25 of estimated age examined during summers of 1970-2004 in northeastern Minnesota, body mass of both males and females peaked at 5 or 6 years of age, with mean masses of 40.8 kg and 31.2 kg, respectively. Testis...
Probabilistic analysis of tsunami hazards
E.L. Geist, T. Parsons
2006, Natural Hazards (37) 277-314
Determining the likelihood of a disaster is a key component of any comprehensive hazard assessment. This is particularly true for tsunamis, even though most tsunami hazard assessments have in the past relied on scenario or deterministic type models. We discuss probabilistic tsunami hazard analysis (PTHA) from the standpoint of integrating...
Cross-shore velocity shear, eddies and heterogeneity in water column properties over fringing coral reefs: West Maui, Hawaii
C. D. Storlazzi, M.A. McManus, J.B. Logan, B.E. McLaughlin
2006, Continental Shelf Research (26) 401-421
A multi-day hydrographic survey cruise was conducted to acquire spatially extensive, but temporally limited, high-resolution, three-dimensional measurements of currents, temperature, salinity and turbidity off West Maui in the summer of 2003 to better understand coastal dynamics along a complex island shoreline with coral reefs. These data complement long-term, high-resolution tide,...
Inference of postseismic deformation mechanisms of the 1923 Kanto earthquake
F. F. Pollitz, M. Nyst, T. Nishimura, W. Thatcher
2006, Journal of Geophysical Research B: Solid Earth (111)
Coseismic slip associated with the M7.9, 1923 Kanto earthquake is fairly well understood, involving slip of up to 8 m along the Philippine Sea-Honshu interplate boundary under Sagami Bay and its onland extension. Postseismic deformation after the 1923 earthquake, however, is relatively poorly understood. We revisit the available deformation data...
Simulation of active tectonic processes for a convecting mantle with moving continents
V. Trubitsyn, M. Kaban, Walter D. Mooney, C. Reigber, P. Schwintzer
2006, Geophysical Journal International (164) 611-623
Numerical models are presented that simulate several active tectonic processes. These models include a continent that is thermally and mechanically coupled with viscous mantle flow. The assumption of rigid continents allows use of solid body equations to describe the continents' motion and to calculate their velocities. The starting point is...
Common clay and shale
R.L. Virta
2006, Mining Engineering (58) 25-26
At present, 150 companies produce common clay and shale in 41 US states. According to the United States Geological Survey (USGS), domestic production in 2005 reached 24.8 Mt valued at $176 million. In decreasing order by tonnage, the leading producer states include North Carolina, Texas, Alabama, Georgia and Ohio. For...
San Francisco 's Golden Gate: A bridge between historically distinct coyote (Canis latrans) populations?
Benjamin N. Sacks, Holly B. Ernest, Erin E. Boydston
2006, Western North American Naturalist (66) 263-264
Although coyotes (Canis latrans) are well-known for their adaptability to human-modified landscapes (Riley et al. 2003), as with any medium to large-sized carnivore, they typically avoid highly urbanized areas (Crooks 2002), preferring instead to use habitat fragments linked by vegetated corridors (Tigas et al. 2002). However, recent observations...
Structure of the San Andreas fault zone at SAFOD from a seismic refraction survey
J.A. Hole, T. Ryberg, G. S. Fuis, F. Bleibinhaus, A.K. Sharma
2006, Geophysical Research Letters (33)
Refraction traveltimes from a 46-km long seismic survey across the San Andreas Fault were inverted to obtain two-dimensional velocity structure of the upper crust near the SAFOD drilling project. The model contains strong vertical and lateral velocity variations from <2 km/s to ???6 km/s. The Salinian terrane west of the...
Forecasting effects of climate change on Great Lakes fisheries: models that link habitat supply to population dynamics can help
Michael L. Jones, Brian J. Shuter, Yingming Zhao, Jason D. Stockwell
2006, Canadian Journal of Fisheries and Aquatic Sciences (63) 457-468
Future changes to climate in the Great Lakes may have important consequences for fisheries. Evidence suggests that Great Lakes air and water temperatures have risen and the duration of ice cover has lessened during the past century. Global circulation models (GCMs) suggest future warming and increases in precipitation in the...
Groundlayer vegetation gradients across oak woodland canopy gaps
N.B. Pavlovic, R. Grundel, W. Sluis
2006, Journal of the Torrey Botanical Society (133) 225-239
Frequency of groundlayer plants was measured across oak woodland canopy gaps at three sites in northwest Indiana to examine how vegetation varied with gap size, direction along the gap edge, and microhabitat. Microhabitats were defined as under the canopy adjacent to the gap, along the gap edge, and within the...
Michigan Water Year 2005
S. P. Blumer, C.R. Whited, J.M. Ellis, R. J. Minnerick, R.L. LeuVoy
2006, Water Resources Data MI-05-1
This volume of the annual hydrologic data report of Michigan is one of a series of annual reports that document hydrologic data gathered from the U.S. Geological Survey's surface- and ground-water data-collection networks in each state, Puerto Rico, and the Trust Territories. These records of streamflow, ground-water levels, and quality...
Near-shore habitat use by endangered juvenile suckers in Upper Klamath Lake, Oregon. Annual report 2002 - 2003
S. P. VanderKooi, H.A. Hendrixson, B.L Herring, R.H. Coshow
2006, Report
n/a...
Invasion patterns along elevation and urbanization gradients in Hawaiian streams
A.M.D. Brasher, C.D. Luton, S. L. Goodbred, R.H. Wolff
2006, Transactions of the American Fisheries Society (135) 1109-1129
Hawaii's extreme isolation has resulted in a native stream fauna characterized by high endemism and unusual life history characteristics. With the rapid increase in the human population, the viability of Hawaiian stream ecosystems is threatened by development and the associated habitat alteration. Thirty-eight sites on three islands (Oahu, Kauai, and...
Migration and spawning of radio-tagged zulega Prochilodus argenteus in a dammed Brazilian river
Alexandre L. Godinho, B. Kynard
2006, Transactions of the American Fisheries Society (135) 811-824
It is difficult for agencies to evaluate the impacts of the many planned dams on Sa??o Francisco River, Brazil, migratory fishes because fish migrations are poorly known. We conducted a study on zulega Prochilodus argenteus, an important commercial and recreational fish in the Sa??o Francisco River, to identify migrations and...
Taricha granulosa (Rough-skinned newt). Summer habitat and aggregation.
Christopher A. Pearl
2006, Herpetological Review (37) 71-72
Terrestrial behavior and habitat associations of post-metamorphic Taricha granulosa are poorly understood (Oliver and McCurdy 1974. Can. J. Zool. 52:541-545; Pimentel 1960. Amer. Midl. Nat. 63:470-496). Chandler (1918. Oregon Agric. Coll. Exper. Sta. Bull. 152:6) referenced Fall T granulosa aggregations in "cavities under stumps, logs, and stones," but does not...
Scientific developments ISFD3
M.H.I. Schropp, T.W. Soong
2006, Conference Paper, Floods, from Defence to Management: Symposium Proceedings - Proceedings of the 3rd International Symposium on Flood Defence
Highlights, trends, and consensus from the 63 papers submitted to the Scientific Developments theme of the Third International Symposium on Flood Defence (ISFD) are presented. Realizing that absolute protection against flooding can never be guaranteed, trends in flood management have shifted: (1) from flood protection to flood-risk management, (2) from...
Contamination of ground water by PCE - A national perspective
M.J. Moran, G.C. Delzer
2006, Conference Paper, Ground Water Management - Petroleum Hydrocarbons and Organic Chemicals in Ground Water: Prevention, Assessment, and Remediation Conf
Perchloroethylene (PCE) has physical and chemical properties that make it likely to persist in groundwater if released to the environment. The US Geological Survey has collected or compiled data on the occurrence of PCE in groundwater from major aquifers around the US. These data represent the occurrence of PCE in...
Lower Methow tributaries intensive effectiveness monitoring study. 2005 progress report
P.J. Connolly, K. Martens, D. Ruttenberg, S. Clayton
2006, Report
n/a...
Containing arsenic-enriched groundwater tracing lead isotopic compositions of common arsenical pesticides in a coastal Maine watershed
Robert A. Ayuso, Nora K. Foley, Glipin R. Robinson Jr., A.S. Colvin, G. Lipfert, A.S. Reeve
2006, Conference Paper, Association for Environmental Health and Sciences - 21st Annual International Conference on Contaminated Soils, Sediments and Water
Arsenical pesticides and herbicides were extensively used on apple, blueberry, and potato crops in New England during the first half of the twentieth century. Lead arsenate was the most heavily used arsenical pesticide until it was officially banned. Lead arsenate, calcium arsenate, and sodium arsenate have similar Pb isotope compositions:...
Planning and implementation of a seismic monitoring system for the bill emerson memorial bridge in cape Girardeau, MO
B.A. Hartnagel, J. O'Connor, W.-H. Yen, P. Clogston, M. Çelebi
2006, Conference Paper, Proceedings of the Structures Congress and Exposition
[No abstract available]...
