A productivity model for parasitized, multibrooded songbirds
L.A. Powell, M. G. Knutson
2006, Condor (108) 292-300
We present an enhancement of a simulation model to predict annual productivity for Wood Thrushes (Hylocichla mustelina) and American Redstarts (Setophaga ruticilla); the model includes effects of Brown-headed Cowbird (Molothrus ater) parasitism. We used species-specific data from the Driftless Area Ecoregion of Wisconsin, Minnesota, and Iowa to parameterize the model...
A practical method for obtaining useful quantities of pheromones from sea lamprey and other fishes for identification and control
J.M. Fine, S.P. Sisler, L.A. Vrieze, W.D. Swink, P.W. Sorensen
2006, Journal of Great Lakes Research (32) 832-838
Pheromonally-mediated trapping is currently being developed for use in sea lamprey control in the Laurentian Great Lakes. To identify and test lamprey pheromones a practical procedure was needed to isolate relatively large quantities of pheromone from lamprey holding water. The present study developed such a technique. It employs Amberlite XAD7HP,...
The Cretaceous Tetori biota in Japan and its evolutionary significance for terrestrial ecosystems in Asia
M. Matsukawa, M. Ito, N. Nishida, K. Koarai, M.G. Lockley, D. J. Nichols
2006, Cretaceous Research (27) 199-225
Cretaceous nonmarine deposits are widely distributed on the Asian continent and include various kinds of zoo- and phyto-assemblages. The Tetori Group is one of the most important Mesozoic terrestrial deposits in East Asia, and for this reason its geology, stratigraphy, and biota have been studied intensively by our group for...
Characterization of unsaturated zone hydrogeologic units using matrix properties and depositional history in a complex volcanic environment
Lorraine E. Flint, David C. Buesch, Alan L. Flint
2006, Vadose Zone Journal (5) 480-492
Characterization of the physical and unsaturated hydrologic properties of subsurface materials is necessary to calculate flow and transport for land use practices and to evaluate subsurface processes such as perched water or lateral diversion of water, which are influenced by features such as faults, fractures, and abrupt changes in lithology....
Mortality and pathology in brown bullheads Amieurus nebulosus associated with a spontaneous Edwardsiella ictaluri outbreak under tank culture conditions
L. R. Iwanowicz, A.R. Griffin, Deborah D. Cartwright, V. S. Blazer
2006, Diseases of Aquatic Organisms (70) 219-225
Brown bullheads Amieurus nebulosus (family Ictaluridae) are commonly used as a sentinel of environmental contamination. These fish are not generally cultured under laboratory conditions and little is known about their disease susceptibility. Here we report an outbreak of disease due to Edwardsiella ictaluri in a laboratory population of tank-reared, wild-caught...
Pleistocene corals of the Florida keys: Architects of imposing reefs - Why?
B. H. Lidz
2006, Journal of Coastal Research (22) 750-759
Five asymmetrical, discontinuous, stratigraphically successive Pleistocene reef tracts rim the windward platform margin off the Florida Keys. Built of large head corals, the reefs are imposing in relief (???30 m high by 1 km wide), as measured from seismic profiles. Well dated to marine oxygen isotope substages 5c, 5b, and...
Does life history predict risk-taking behavior of wintering dabbling ducks?
Joshua T. Ackerman, J.M. Eadie, T.G. Moore
2006, Condor (108) 530-546
Life-history theory predicts that longer-lived, less fecund species should take fewer risks when exposed to predation than shorter-lived, more fecund species. We tested this prediction for seven species of dabbling ducks (Anas) by measuring the approach behavior (behavior of ducks when approaching potential landing sites) of 1099 duck flocks during...
Kaolin
R.L. Virta
2006, Mining Engineering (58) 40-41
In 2005, 22 companies mined kaolin in nine US states. Production in Georgia declined to 6.19 Mt down from 6.78 Mt in 2004. Despite the decline, Georgia remained the leading producer state followed by Alabama, South Carolina, Arkansas, Texas, Nevada, California, North Carolina and Florida. In the next year or...
Health impacts of coal: Should we be concerned?
R. B. Finkelman, H. E. Belkin, J.A. Centeno
2006, Geotimes (51) 24-28
[No abstract available]...
Evidence for aseismic deformation rate changes prior to earthquakes
E.A. Roeloffs
2006, Annual Review of Earth and Planetary Sciences (34) 591-627
For ten earthquakes in nonmagmatic settings, there are credible published accounts of pre-earthquake deformation-rate changes lasting hundreds of seconds to more than a decade. Although most M > 7.5 earthquakes have occurred without detectable pre-earthquake deformation, the detection threshold for aseismic deformation remains high, in that aseismic slip with moment...
Response of oxidative enzyme activities to nitrogen deposition affects soil concentrations of dissolved organic carbon
M. P. Waldrop, D.R. Zak
2006, Ecosystems (9) 921-933
Recent evidence suggests that atmospheric nitrate (NO3- ) deposition can alter soil carbon (C) storage by directly affecting the activity of lignin-degrading soil fungi. In a laboratory experiment, we studied the direct influence of increasing soil NO 3- concentration on microbial C cycling in three different ecosystems: black oak-white oak...
Hydroacoustic separation of rainbow smelt (Osmerus mordax) age groups in Lake Champlain
Stetter S.L. Parker, L. G. Rudstam, Thomson J.L. Stritzel, D.L. Parrish
2006, Fisheries Research (82) 176-185
Separate assessment of young-of-year (YOY) and yearling-and-older (YAO) fish is desirable from both ecological and management perspectives. Acoustic assessments provide information on fish population size structure in the target strength (TS) distribution, but interpretation of TS distributions must be done carefully, as single age groups can produce multiple TS modes....
Population structure, persistence, and seasonality of autochthonous Escherichia coli in temperate, coastal forest soil from a Great Lakes watershed
M.N. Byappanahalli, R.L. Whitman, D.A. Shively, M.J. Sadowsky, S. Ishii
2006, Environmental Microbiology (8) 504-513
The common occurrence of Escherichia coli in temperate soils has previously been reported, however, there are few studies to date to characterize its source, distribution, persistent capability and genetic diversity. In this study, undisturbed, forest soils within six randomly selected 0.5 m2 exclosure plots (covered by netting of 2.3 mm2...
Warming and earlier spring increase Western U.S. forest wildfire activity
A.L. Westerling, H.G. Hidalgo, D.R. Cayan, T.W. Swetnam
2006, Science (313) 940-943
Western United States forest wildfire activity is widely thought to have increased in recent decades, yet neither the extent of recent changes nor the degree to which climate may be driving regional changes in wildfire has been systematically documented. Much of the public and scientific discussion of changes in western...
Estimating locations and magnitudes of earthquakes in southern California from modified Mercalli intensities
W. H. Bakun
2006, Bulletin of the Seismological Society of America (96) 1278-1295
Modified Mercalli intensity (MMI) assignments, instrumental moment magnitudes M, and epicenter locations of thirteen 5.6 ??? M ??? 7.1 "training-set" events in southern California were used to obtain the attenuation relation MMI = 1.64 + 1.41M - 0.00526 * ??h - 2.63 * log ??h, where ??h is the hypocentral...
International symposium on airborne geophysics
T. Mogi, H. Ito, H. Kaieda, K. Kusunoki, R. W. Saltus, D.V. Fitterman, S. Okuma, T. Nakatsuka
2006, Conference Paper, Eos
[No abstract available]...
Distribution and sources of surfzone bacteria at Huntington Beach before and after disinfection on an ocean outfall - A frequency-domain analysis
M.A. Noble, J. P. Xu, G.L. Robertson, L.K. Rosenfeld
2006, Marine Environmental Research (61) 494-510
Fecal indicator bacteria (FIB) were measured approximately 5 days a week in ankle-depth water at 19 surfzone stations along Huntington Beach and Newport Beach, California, from 1998 to the end of 2003. These sampling periods span the time before and after treated sewage effluent, discharged into the coastal ocean from...
Late Pleistocene outburst flooding from pluvial Lake Alvord into the Owyhee River, Oregon
D.T. Carter, L.L. Ely, J. E. O’Connor, C.R. Fenton
2006, Geomorphology (75) 346-367
At least one large, late Pleistocene flood traveled into the Owyhee River as a result of a rise and subsequent outburst from pluvial Lake Alvord in southeastern Oregon. Lake Alvord breached Big Sand Gap in its eastern rim after reaching an elevation of 1292 m, releasing 11.3 km3 of water...
Bobcat attack on a cottontail rabbit
E. Biggins, D.M. Biggins
2006, Southwestern Naturalist (51) 119-122
We observed an attack by a bobcat (Lynx rufus) on a cottontail rabbit (Sylvilagus) that involved stealthy approach by the cat for >1 h, followed by a 12.3-s chase covering 116.0 m for the cat and 128.4 m for the rabbit. During the chase, the route of the cat from...
Earthquake lights and the stress-activation of positive hole charge carriers in rocks
F. St-Laurent, J.S. Derr, F.T. Freund
2006, Physics and Chemistry of the Earth (31) 305-312
Earthquake-related luminous phenomena (also known as earthquake lights) may arise from (1) the stress-activation of positive hole (p-hole) charge carriers in igneous rocks and (2) the accumulation of high charge carrier concentrations at asperities in the crust where the stress rates increase very rapidly as an earthquake approaches. It is...
Anomalous postcritical refraction behavior for certain transversely isotropic media
L. Fa, R.L. Brown, J.P. Castagna
2006, Journal of the Acoustical Society of America (120) 3479-3492
Snell's law at the boundary between two transversely isotropic media with a vertical axis of symmetry (VTI media) can be solved by setting up a fourth order polynomial for the sine of the reflection/transmission angles. This approach reveals the possible presence of an anomalous postcritical angle for certain transversely isotropic...
Evaluating hydraulic conductivity of desert soils at the Amargosa Desert Research Site near Beatty, Nevada
J.W. Wilson
2006, Thesis
No abstract available....
A static predictor of seismic demand on frames based on a post-elastic deflected shape
Y. Mori, T. Yamanaka, N. Luco, C.A. Cornell
2006, Earthquake Engineering and Structural Dynamics (35) 1295-1318
Predictors of seismic structural demands (such as inter-storey drift angles) that are less time-consuming than nonlinear dynamic analysis have proven useful for structural performance assessment and for design. Luco and Cornell previously proposed a simple predictor that extends the idea of modal superposition (of the first two modes) with the...
A cool eastern Pacific Ocean at the close of the Last Interglacial complex
D.R. Muhs, K. R. Simmons, G. L. Kennedy, K.R. Ludwig, L.T. Groves
2006, Conference Paper, Quaternary Science Reviews
New high-precision thermal ionization mass-spectrometric (TIMS) U-series ages of solitary corals (Balanophyllia elegans) from several marine terrace localities along the California and southern Oregon coasts date to the ???80,000 yr BP high stand of sea, correlative with marine isotope substage 5a, late in the last interglacial complex. Ages of multiple...
Breeding biology and success of a reintroduced population of the critically endangered Puaiohi (Myadestes palmeri)
E.J. Tweed, J.T. Foster, B.L. Woodworth, W.B. Monahan, J.L. Kellerman, A. Lieberman
2006, The Auk (123) 753-763
The ultimate success of reintroduction programs for endangered species depends on the ability of reintroduced animals to breed in the wild. We studied the nesting success and breeding biology of a reintroduced population of Puaiohi (Myadestes palmeri) on the island of Kaua'i, Hawaii. Thirty-four captive-bred Puaiohi were released into the...
