Windthrow and salvage logging in an old-growth hemlock-northern hardwoods forest
K.D. Lang, L.A. Schulte, G.R. Guntenspergen
2009, Forest Ecology and Management (259) 56-64
Although the initial response to salvage (also known as, post-disturbance or sanitary) logging is known to vary among system components, little is known about longer term forest recovery. We examine forest overstory, understory, soil, and microtopographic response 25 years after a 1977 severe wind disturbance on the Flambeau River State...
New Permian durhaminid cerioid corals from east-central California
C.H. Stevens, P. Stone
2009, Journal of Paleontology (83) 946-953
Permian colonial corals from Artinskian to Kungurian strata in the Conglomerate Mesa area, Inyo Mountains, east-central California, include five new species, one of which is assigned to a new genus. The new taxa are: Malpaisia maceyi n. gen. and n. sp., Pararachnastraea bellula n. sp., P. delicata n. sp., P....
Fine-scale relief related to late holocene channel shifting within the floor of the upper Redondo Fan, offshore Southern California
W. R. Normark, C. K. Paull, D.W. Caress, W. Ussler III, R. Sliter
2009, Sedimentology (56) 1690-1704
Erosional and depositional bedforms have been imaged at outcrop scale in the upper Redondo Fan, in the San Pedro Basin of offshore Southern California in ≥600 m water depths, using an Autonomous Underwater Vehicle developed by the Monterey Bay Aquarium Research Institute. The Autonomous Underwater Vehicle...
Evidence for an Alleghanian (Early Carboniferous to Late Permian) tectonothermal event in the New Jersey Coastal Plain basement from 40Ar/39Ar biotite data, geochemistry and gravity modeling
T.J. Maguire, R.A. Volkert, C. C. Swisher III, R. E. Sheridan
2009, Journal of Geodynamics (48) 23-36
40Ar/39Ar dating of biotite from felsic orthogneiss recovered from the -3890-foot level of the Island Beach State Park (IBSP) well beneath the outer New Jersey Coastal Plain was accomplished using CO2 laser incremental-heating techniques. Over 75% of the Ar released from the incremental-heating experiment form a well-behaved plateau with a...
Continental-scale patterns in soil geochemistry and mineralogy: results from two transects across the United States and Canada
L. G. Woodruff, W.F. Cannon, D. D. Eberl, D. B. Smith, J.E. Kilburn, J.D. Horton, R. G. Garrett, R.A. Klassen
2009, Applied Geochemistry (24) 1369-1381
In 2004, the US Geological Survey (USGS) and the Geological Survey of Canada (GSC) initiated a pilot study that involved collection of more than 1500 soil samples from 221 sites along two continental transects across Canada and the United States. The pilot study was designed to test and refine protocols...
The potential of mid- and near-infrared diffuse reflectance spectroscopy for determining major- and trace-element concentrations in soils from a geochemical survey of North America
J. B. Reeves III, D. B. Smith
2009, Applied Geochemistry (24) 1472-1481
In 2004, soils were collected at 220 sites along two transects across the USA and Canada as a pilot study for a planned soil geochemical survey of North America (North American Soil Geochemical Landscapes Project). The objective of the current study was to examine the potential of diffuse reflectance (DR)...
Mineralogy of soils from two continental-scale transects across the United States and Canada and its relation to soil geochemistry and climate
D. D. Eberl, D. B. Smith
2009, Applied Geochemistry (24) 1394-1404
Quantitative mineralogy correlates with major-, minor- and trace-element chemistry for 387 samples of A-horizon and deeper soils collected from east-west and north-south transects across the USA and Canada, where the deeper soils were collected beneath the A-horizon samples. Concentrations of the major elements correlate with specific mineral phases. Minor- and...
Application of in vitro extraction studies to evaluate element bioaccessibility in soils from a transect across the United States and Canada
S.A. Morman, G.S. Plumlee, D. B. Smith
2009, Applied Geochemistry (24) 1454-1463
In vitro bioaccessibility tests (IVBA) are inexpensive, physiologically-based extraction tests designed to estimate the bioaccessibility of elements along ingestion exposure pathways. Published IVBA protocols call for the testing to be done on the <250-??m fraction of soil, as these particles are most likely to adhere to the hands of children...
Dynamics of national forests assessed using the Landsat record: Case studies in eastern United States
C. Huang, S.N. Goward, K. Schleeweis, N. Thomas, J. G. Masek, Z. Zhu
2009, Remote Sensing of Environment (113) 1430-1442
The national forests (NFs) in the United States are protected areas managed for multiple purposes, and therefore are subject to both natural and anthropogenic disturbances. Monitoring forest changes arising from such disturbances and the post-disturbance recovery processes is essential for assessing the conditions of the NFs and the effectiveness...
Geologic columns for the ICDP-USGS Eyreville A and B cores, Chesapeake Bay impact structure: Sediment-clast breccias, 1096 to 444 m depth
Lucy E. Edwards, David S. Powars, Gregory Gohn, H. Dypvik
2009, Special Paper of the Geological Society of America 51-89
The Eyreville A and B cores, recovered from the “moat” of the Chesapeake Bay impact structure, provide a thick section of sediment-clast breccias and minor stratified sediments from 1095.74 to 443.90 m. This paper discusses the...
A regional-scale study of chromium and nickel in soils of northern California, USA
J.M. Morrison, M. B. Goldhaber, L. Lee, J.M. Holloway, R. B. Wanty, R.E. Wolf, J. F. Ranville
2009, Applied Geochemistry (24) 1500-1511
A soil geochemical survey was conducted in a 27,000-km2 study area of northern California that includes the Sierra Nevada Mountains, the Sacramento Valley, and the northern Coast Range. The results show that soil geochemistry in the Sacramento Valley is controlled primarily by the transport and weathering of parent material from...
Low-btu gas in the US Midcontinent: A challenge for geologists and engineers
K. David Newell, Saibal Bhattacharya, M. Scott Sears
2009, Oil & Gas Journal (107) 35-44
Several low-btu gas plays can be defined by mapping gas quality by geological horizon in the Midcontinent. Some of the more inviting plays include Permian strata west of the Central Kansas uplift and on the eastern flank of Hugoton field and Mississippi chat and other pays that subcrop beneath (and...
Past permafrost on the Mid-Atlantic coastal plain, eastern United States
H. French, M. Demitroff, Wayne L. Newell
2009, Permafrost and Periglacial Processes (20) 285-294
Sand-wedge casts, soil wedges and other non-diastrophic, post-depositional sedimentary structures suggest that Late-Pleistocene permafrost and deep seasonal frost on the Mid-Atlantic Coastal Plain extended at least as far south as southern Delaware, the Eastern Shore and southern Maryland. Heterogeneous cold-climate slope deposits mantle lower valley-side slopes in central Maryland. A...
Hierarchical demographic approaches for assessing invasion dynamics of non-indigenous species: An example using northern snakehead (Channa argus)
Y. Jiao, N.W.R. Lapointe, P. L. Angermeier, B.R. Murphy
2009, Ecological Modelling (220) 1681-1689
Models of species' demographic features are commonly used to understand population dynamics and inform management tactics. Hierarchical demographic models are ideal for the assessment of non-indigenous species because our knowledge of non-indigenous populations is usually limited, data on demographic traits often come from a species' native range, these traits vary...
A spatial model to prioritize sagebrush landscapes in the intermountain west (U.S.A.) for restoration
C.W. Meinke, S.T. Knick, D.A. Pyke
2009, Restoration Ecology (17) 652-659
The ecological integrity of Sagebrush (Artemisia spp.) ecosystems in the Intermountain West (U.S.A.) has been diminished by synergistic relationships among human activities, spread of invasive plants, and altered disturbance regimes. An aggressive effort to restore Sagebrush habitats is necessary if we are to stabilize or improve current habitat trajectories and...
Distribution and postbreeding environmental relationships of Northern leopard frogs (Rana [Lithobates] pipiens) in Washington
S.S. Germaine, D.W. Hays
2009, Western North American Naturalist (69) 537-547
Northern leopard frogs (Rana [Lithobates] pipiens) are considered sensitive, threatened, or endangered in all western states and western Canadian provinces. Historically present in eastern Washington in 6 major river drainages, leopard frogs are now only known to occur at 2 localized areas in the Crab Creek drainage in Grant County....
Geologic columns for the ICDP-USGS Eyreville B core, Chesapeake Bay impact structure: Impactites and crystalline rocks, 1766 to 1096 m depth
J. Wright Horton Jr., R.L. Gibson, W.U. Reimold, A. Wittmann, Gregory Gohn, Lucy E. Edwards
2009, Special Paper of the Geological Society of America 21-49
The International Continental Scientific Drilling Program (ICDP)-U.S. Geological Survey (USGS) Eyreville drill cores from the Chesapeake Bay impact structure provide one of the most complete geologic sections ever obtained from an impact structure. This paper presents a series of geologic columns and descriptive lithologic information for the lower impactite and...
Low lower crustal velocity across Ethiopia: Is the Main Ethiopian Rift a narrow rift in a hot craton?
K.M. Keranen, S.L. Klemperer, J. Julia, J. F. Lawrence, A.A. Nyblade
2009, Geochemistry, Geophysics, Geosystems (10)
[1] The Main Ethiopian Rift (MER) is a classic narrow rift that developed in hot, weak lithosphere, not in the initially cold, thick, and strong lithosphere that would be predicted by common models of rift mode formation. Our new 1-D seismic velocity profiles from Rayleigh wave/receiver function joint inversion across...
Thiamine content of eggs and lengths of coho salmon (Oncorhynchus kisutch) in relation to abundance of alewife (Alosa pseudoharengus) in eastern Lake ontario, 2003 to 2006
H. G. Ketola, J. Rinchard, R. O'Gorman, L.J. Begnoche, D.L. Bishop, A.W. Greulich
2009, Journal of Freshwater Ecology (24) 247-254
Early mortality syndrome in fry of Great Lakes salmonines is linked to reduced levels of thiamine in eggs, which reflects maternal consumption of forage fishes such as alewife (Alosa pseudoharengus) that contain thiaminase, an enzyme that destroys thiamine. We assessed annual variations in abundance and condition of alewives and thiamine...
Sea-level rise in New Jersey over the past 5000 years: Implications to anthropogenic changes
Kenneth G. Miller, Peter J. Sugarman, James V. Browning, Benjamin P. Horton, Alissa Stanley, Alicia Kahn, Jane Uptegrove, Michael Aucott
2009, Global and Planetary Change (66) 10-18
We present a mid to late Holocene sea-level record derived from drilling the New Jersey coast that shows a relatively constant rise of 1.8??mm/yr from ~ 5000 to 500 calibrated calendar years before present (yrBP). This contrasts with previous New Jersey estimates that showed only 0.5??mm/yr rise since 2000??yrBP. Comparison...
Toxicity of atmospheric aerosols on marine phytoplankton
A. Paytan, K.R.M. Mackey, Y. Chen, I.D. Lima, S.C. Doney, N. Mahowald, R. Labiosa, A.F. Post
2009, Proceedings of the National Academy of Sciences of the United States of America (106) 4601-4605
Atmospheric aerosol deposition is an important source of nutrients and trace metals to the open ocean that can enhance ocean productivity and carbon sequestration and thus influence atmospheric carbon dioxide concentrations and climate. Using aerosol samples from different back trajectories in incubation experiments with natural communities, we demonstrate that the...
The role of ridge subduction in determining the geochemistry and Nd–Sr–Pb isotopic evolution of the Kodiak batholith in southern Alaska
Robert A. Ayuso, Peter J. Haeussler, Dwight Bradley, David W. Farris, Nora K. Foley, Gregory A. Wandless
2009, Tectonophysics (464) 137-163
The Paleocene Kodiak batholith, part of the Sanak–Baranof belt of Tertiary near-trench intrusive rocks, forms an elongate body (~ 150 km long) that transects Kodiak Island from SW to NE. The batholith consists of three zones (Southern, Central, and Northern) of kyanite-, muscovite-, and garnet-bearing biotite tonalite and granodiorite and less abundant...
New fusulinids from Lower Permian turbidites at Conglomerate Mesa, southeastern inyo Mountains, east-central California
C.H. Stevens, P. Stone
2009, Journal of Paleontology (83) 399-404
Seven previously unrecognized fusulinid species from Lower Permian (Wolfcampian and Leonardian) turbidites near Conglomerate Mesa in east-central California, four of which are named as new species, are here described and figured. The four new species are Schwagerina merriami, S. wildei, Parafusulina mackevetti, and Skinnerella rossi. These fusulinid species have close...
Unconventional energy resources: 2007-2008 review
Peter D. Warwick, American Association of Petroleum Geologists, Energy Minerals Division
2009, Natural Resources Research (18) 65-83
This paper summarizes five 2007–2008 resource commodity committee reports prepared by the Energy Minerals Division (EMD) of the American Association of Petroleum Geologists. Current United States and global research and development activities related to gas hydrates, gas shales, geothermal resources, oil sands, and uranium resources are included in this review....
What parts of the US mainland are climatically suitable for invasive alien pythons spreading from Everglades National Park?
G.H. Rodda, C. S. Jarnevich, R.N. Reed
2009, Biological Invasions (11) 241-252
The Burmese Python (Python molurus bivittatus) is now well established in southern Florida and spreading northward. The factors likely to limit this spread are unknown, but presumably include climate or are correlated with climate. We compiled monthly rainfall and temperature statistics from 149 stations located near the edge of the...
