Paleozoic sedimentary rocks in the Red Dog Zn-Pb-Ag district and vicinity, western Brooks Range, Alaska: provenance, deposition, and metallogenic significance
John F. Slack, Julie A. Dumoulin, J.M. Schmidt, L. E. Young, Cameron Rombach
2004, Economic Geology (99) 1385-1414
Geochemical analyses of Paleozoic sedimentary rocks in the western Brooks Range reveal a complex evolutionary history for strata surrounding the large Zn-Pb-Ag deposits of the Red Dog district. Data for major elements, trace elements, and rare earth elements (REE) were obtained on 220 samples of unaltered and unmineralized siliciclastic rocks...
Occurrence of human pharmaceuticals in water resources of the United States: A review
M. J. Focazio, D.W. Kolpin, E. T. Furlong
2004, Book chapter, Pharmaceuticals in the environment
The widespread environmental presence of some pharmaceuticals and other organic wastewater compounds has been documented globally (e.g. Buser et al. 1998; Ternes 1998; Stumpf et al.1999; Heberer et al. 2001; Kümmerer 2001; Ternes et al. 2001; Scheytt et al. 2001; Golet et al. 2002; Kolpin et al. 2002; Boyd et...
Survival estimation in bats: historical overview, critical appraisal, and suggestions for new approaches
T. J. O'Shea, L.E. Ellison, T.R. Stanley
W.L. Thompson, editor(s)
2004, Book chapter, Sampling rare or elusive species: concepts, designs, and techniques for estimating population parameters
No abstract available....
9969 Braille: Deep Space 1 infrared spectroscopy, geometric albedo, and classification
B. J. Buratti, D.T. Britt, L.A. Soderblom, M.D. Hicks, D. C. Boice, R. H. Brown, R. Meier, R.M. Nelson, J. Oberst, T.C. Owen, A.S. Rivkin, B.R. Sandel, S. A. Stern, N. Thomas, R.V. Yelle
2004, Icarus (167) 129-135
Spectra of Asteroid 9969 Braille in the 1.25-2.6 ??m region returned by the Deep Space 1 (DS1) Mission show a ???10% absorption band centered at 2 ??m, and a reflectance peak at 1.6 ??m. Analysis of these features suggest that the composition of Braille is roughly equal parts pyroxene and...
Assessing rarity of species with low detectability: Lichens in Pacific Northwest forests
T.C. Edwards Jr., D.R. Cutler, L. Geiser, J. Alegria, D. McKenzie
2004, Ecological Applications (14) 414-424
We show how simple statistical analyses of systematically collected inventory data can be used to provide reliable information about the distribution and habitat associations of rare species. Using an existing design-based sampling grid on which epiphytic macrolichens had been inventoried in the Northwest Forest Plan area of the U.S. Pacific...
Geochemical discrimination of five pleistocene lava-dam outburst-flood deposits, western Grand Canyon, Arizona
C.R. Fenton, R.J. Poreda, B.P. Nash, R. H. Webb, T.E. Cerling
2004, Journal of Geology (112) 91-110
Pleistocene basaltic lava dams and outburst‐flood deposits in the western Grand Canyon, Arizona, have been correlated by means of cosmogenic 3He (3Hec) ages and concentrations of SiO2, Na2O, K2O, and rare earth elements. These data indicate that basalt clasts and vitroclasts in a given outburst‐flood deposit came from a common source,...
Role of a large marine protected area for conserving landscape attributes of sand habitats on Georges Bank (NW Atlantic)
J. Lindholm, P. Auster, P. Valentine
2004, Marine Ecology Progress Series (269) 61-68
Mobile fishing gear reduces seafloor habitat complexity through the removal of structure-building fauna, e.g. emergent organisms that create pits and burrows, as well as by smoothing of sedimentary bedforms (e.g. sand ripples). In this study, we compared the relative abundance of microhabitat features (the scale at which individual fish associate...
Effects of an introduced pathogen and fire exclusion on the demography of sugar pine
Phillip J. van Mantgem, Nathan L. Stephenson, MaryBeth Keifer, Jon E. Keeley
2004, Ecological Applications (14) 1590-1602
An introduced pathogen, white pine blister rust (Cronartium ribicola), has caused declines in five-needled pines throughout North America. Simultaneously, fire exclusion has resulted in dense stands in many forest types, which may create additional stress for these generally shade-intolerant pines. Fire exclusion also allows fuels to accumulate, and it...
Invertebrate Paleontology of the Wilson Grove Formation (Late Miocene to Late Pliocene), Sonoma and Marin Counties, California, with some Observations on Its Stratigraphy, Thickness, and Structure
Charles L. Powell II, James R. Allen, Peter J. Holland
2004, Open-File Report 2004-1017
The Wilson Grove Formation is exposed from Petaluma north to northern Santa Rosa, and from Bennett Valley west to Bodega Bay. A fauna of at least 107 invertebrate taxa consisting of two brachiopods, 95 mollusks (48 bivalves and 46 gastropods), at least eight arthropods, and at least two echinoids have...
Standard weight (Ws) equations for four rare desert fishes
A.V. Didenko, Scott A. Bonar, W.J. Matter
2004, North American Journal of Fisheries Management (24) 697-703
Standard weight (Ws) equations have been used extensively to examine body condition in sport fishes. However, development of these equations for nongame fishes has only recently been emphasized. We used the regression-line-percentile technique to develop standard weight equations for four rare desert fishes: flannelmouth sucker Catostomus latipinnis, razorback sucker Xyrauchen...
U-Pb zircon and geochemical evidence for bimodal mid-Paleozoic magmatism and syngenetic base-metal mineralization in the Yukon-Tanana terrane, Alaska
Cynthia Dusel-Bacon, J. L. Wooden, M.J. Hopkins
2004, Geological Society of America Bulletin (116) 989-1015
New SHRIMP (sensitive, high-resolution ion microprobe) U-Pb zircon ages and trace element geochemical data for mafic and felsic metaigneous rocks of the pericratonic Yukon-Tanana terrane in east-central Alaska help define the tectonic setting of mid-Paleo-zoic magmatism and syngenetic hydrothermal Zn-Pb-Ag mineralization along the ancient Pacific margin of North America. We...
Proposed list of extinct, rare, and/or endangered microlichens in Wisconsin
J. P. Bennett, C. M. Wetmore
2004, Mycotaxon (89) 169-180
We propose that 41 species of macrolichens be listed for rare status in Wisconsin, along with 6 other species we think are now extinct in the state. Almost 60% of the species occur in the northern part of the state. Some of the extinct species occurred in the southern part....
Agricultural ponds support amphibian populations
M. G. Knutson, W. B. Richardson, D.M. Reineke, B. R. Gray, J.R. Parmelee, S.E. Weick
2004, Ecological Applications (14) 669-684
In some agricultural regions, natural wetlands are scarce, and constructed agricultural ponds may represent important alternative breeding habitats for amphibians. Properly managed, these agricultural ponds may effectively increase the total amount of breeding habitat and help to sustain populations. We studied small, constructed agricultural ponds in southeastern Minnesota to assess...
Nevadaite, (Cu2+, Al, V3+)6 [Al8 (PO4)8 F8] (OH 2 (H2O)22, a new phosphate mineral species from the Gold Quarry mine, Carlin, Eureka County, Nevada: Description and crystal structure
M. A. Cooper, Frank C. Hawthorne, Andrew C. Roberts, E.E. Foord, Richard C. Erd, H. T. Evans Jr., M.C. Jensen
2004, Canadian Mineralogist (42) 741-752
Nevadaite, (Cu2+, □, Al, V3+)6 (PO4)8 F8 (OH)2 (H2O)22, is a new supergene mineral species from the Gold Quarry mine, near Carlin, Eureka County, Nevada, U.S.A. Nevadaite forms radiating clusters to 1 mm of prismatic crystals, locally covering surfaces more that 2 cm across; individual crystals are elongate on [001] with a length:width ratio...
Fast ground-water mixing and basal recharge in an unconfined, alluvial aquifer, Konza LTER Site, Northeastern Kansas
G.L. Macpherson, M. Sophocleous
2004, Journal of Hydrology (286) 271-299
Ground-water chemistry and water levels at three levels in a well nest were monitored biweekly for two and a half years in a shallow unconfined floodplain aquifer in order to study the dynamics of such shallow aquifers. The aquifer, in northeastern Kansas, consists of high porosity, low hydraulic conductivity fine-grained...
Origin of placer laurite from Borneo: Se and As contents, and S isotopic compositions
K.H. Hattori, L.J. Cabri, B. Johanson, M. L. Zientek
2004, Mineralogical Magazine (68) 353-368
We examined grains of the platinum-group mineral, laurite (RuS2), from the type locality, Pontyn River, Tanah Laut, Borneo, and from the Tambanio River, southeast Borneo. The grains show a variety of morphologies, including euhedral grains with conchoidal fractures and pits, and spherical grains with no crystal faces, probably because of...
Reintroduction of the flannelmouth sucker in the lower Colorado River
G.A. Mueller, R. Wydoski
2004, North American Journal of Fisheries Management (24) 41-46
A single stocking of 611 wild flannelmouth suckers Catostomus latipinnis in 1976 represented the first successful reintroduction of a native fish in the lower Colorado River. Flannelmouth suckers ranging in age from young of the year to 24 years were captured during 1999–2001; their population was estimated as at least...
Cross scale interactions, nonlinearities, and forecasting catastrophic events
Debra P. C. Peters, Roger A. Pielke Sr., Brandon T. Bestelmeyer, Craig D. Allen, Stuart Munson-McGee, Kris M. Havstad
2004, PNAS (101) 15130-15135
Catastrophic events share characteristic nonlinear behaviors that are often generated by cross-scale interactions and feedbacks among system elements. These events result in surprises that cannot easily be predicted based on information obtained at a single scale. Progress on catastrophic events has focused on one of the following two areas: nonlinear...
Tectonics and metallogenesis of Proterozoic rocks of the Reading Prong
L.C.S. Gundersen
2004, Journal of Geodynamics (37) 361-379
Detailed geologic mapping, petrography, and major and trace-element analyses of Proterozoic rocks from the Greenwood Lake Quadrangle, New York are compared with chemical analyses and stratigraphic information compiled for the entire Reading Prong. A persistent regional stratigraphy is evident in the mapped area whose geochemistry indicates protoliths consistent with a...
Jurassic "savannah" - Plant taphonomy and climate of the Morrison Formation (Upper Jurassic, Western USA)
Judith T. Parrish, F. Peterson, C.E. Turner
2004, Sedimentary Geology (167) 137-162
The Morrison Formation contains six plant taphofacies: Wood, whole-leaf, leaf-mat, root, common carbonaceous debris, and rare carbonaceous debris. None of these taphofacies is common in the Morrison; particularly striking is the paucity of wood, even in more reducing environments. The flora of the Morrison Formation is distinct in the Kimmeridgian...
Spatial variation in fish species richness of the upper Mississippi River system
T.M. Koel
2004, Transactions of the American Fisheries Society (133) 984-1003
Important natural environmental gradients, including the connectivity of off-channel aquatic habitats to the main-stem river, have been lost in many reaches of the upper Mississippi River system, and an understanding of the consequences of this isolation is lacking in regard to native fish communities. The objectives of this study were...
Exploitation of pocket gophers and their food caches by grizzly bears
D.J. Mattson
2004, Journal of Mammalogy (85) 731-742
I investigated the exploitation of pocket gophers (Thomomys talpoides) by grizzly bears (Ursus arctos horribilis) in the Yellowstone region of the United States with the use of data collected during a study of radiomarked bears in 1977-1992. My analysis focused on the importance of pocket gophers as a source of...
Geospatial data resampling and resolution effects on watershed modeling: A case study using the agricultural non-point source pollution model
E.L. Usery, M.P. Finn, Daniel J. Scheidt, S. Ruhl, T. Beard, M. Bearden
2004, Journal of Geographical Systems (6) 289-306
Researchers have been coupling geographic information systems (GIS) data handling and processing capability to watershed and waterquality models for many years. This capability is suited for the development of databases appropriate for water modeling. However, it is rare for GIS to provide direct inputs to the models. To demonstrate the...
Fishes and habitat characteristics of the Keya Paha River, South Dakota-Nebraska
B. Harland, C. R. Berry Jr.
2004, Journal of Freshwater Ecology (19) 169-177
Fishes were collected in four mainstem reaches and eight tributary reaches in the Keya Paha River basin during May and June 2002. Most reaches were characteristically run habitats with sand substrates and riparian pastures. Data were combined with historical records to construct a basin-wide ichthyofaunal list which comprised 38 species...
Morphology and sedimentation on open-coast intertidal flats of the Changjiang Delta, China
D. Fan, C. Li, D. Wang, P. Wang, A.W. Archer, S.F. Greb
2004, Conference Paper, Journal of Coastal Research
On many intertidal flats, lateral aggradation and reworking by large tidal channels is the dominant sedimentary process. On the open-coast intertidal flats of the Changjiang Delta large laterally migrating tidal channels are absent. Instead, numerous shallow tidal creeks cut across the intertidal flats. On these flats, vertical rather than lateral...
