USGS assessment of undiscovered oil and gas resources in Paleogene strata of the U.S. Gulf of Mexico coastal plain and state waters
Peter D. Warwick, James L. Coleman, Paul C. Hackley, Daniel O. Hayba, Alexander W. Karlsen, Elisabeth L. Rowan, Sharon M. Swanson
Lorcan Kennan, James Pindell, Norman C. Rosen, editor(s)
2007, Conference Paper, The Paleogene of the Gulf of Mexico and Caribbean basins: Processes, events, and petroleum systems
This report presents a review of the U.S. Geological Survey (USGS) 2007 assessment of the undiscovered oil and gas resources in Paleogene strata underlying the U.S. Gulf of Mexico Coastal Plain and state waters. Geochemical, geologic, geophysical, thermal maturation, burial history, and paleontologic studies have been combined with regional cross...
Diet niches of major forage fish in Lake Michigan
R. Douglas Hunter, J.F. Savino, L.M. Ogilvie
Jankun M.Brzuzan P.Hliwa P.Luczynski M., editor(s)
2007, Conference Paper, Advances in Limnology
A large complex of coregonine species historically dominated the fish community of Lake Michigan. The current species complex is simplified with one remaining coregonine, bloater (Coregonus hoyi), deepwater sculpin (Myoxocephalus thompsoni), slimy sculpin (Cottus cognatus), and two dominant invaders, alewife (Alosa pseudoharengus) and rainbow smelt (Osmerus mordax). To better understand...
Genetic markers and the coregonid problem
W. Stott, T. N. Todd
Jankun M.Brzuzan P.Hliwa P.Luczynski M., editor(s)
2007, Conference Paper, Advances in Limnology
Coregonid fishes are the forage base in many ecosystems in the northern hemisphere and they have traditionally been part of commercial and native fisheries. Coregonids display extreme variability in morphology, life history, and behavior. Defining boundaries among coregonid taxa has been (and continues to be) the focus of many studies....
Hydrogeologic controls on nitrate transport in a small agricultural catchment, Iowa
K. E. Schilling, M.D. Tomer, Y.-K. Zhang, T. Weisbrod, P. Jacobson, C.A. Cambardella
2007, Journal of Geophysical Research G: Biogeosciences (112)
Effects of subsurface deposits on nitrate loss in stream riparian zones are recognized, but little attention has been focused on similar processes occurring in upland agricultural settings. In this paper, we evaluated hydrogeologic controls on nitrate transport processes occurring in a small 7.6 ha Iowa catchment. Subsurface deposits in the...
Construction and testing of a simple and economical soil greenhouse gas automatic sampler
D. Ginting, S.L. Arnold, N.S. Arnold, R.S. Tubbs
2007, Journal of Plant Nutrition (30) 1441-1454
Quantification of soil greenhouse gas emissions requires considerable sampling to account for spatial and/or temporal variation. With manual sampling, additional personnel are often not available to sample multiple sites within a narrow time interval. The objectives were to construct an automatic gas sampler and to compare the accuracy and precision...
Population-specific demographic estimates provide insights into declines of Lark Buntings (Calamospiza melanocorys)
A. A. Yackel Adams, S. K. Skagen, J. A. Savidge
2007, The Auk (124) 578-593
Many North American prairie bird populations have recently declined, and the causes of these declines remain largely unknown. To determine whether population limitation occurs during breeding, we evaluated the stability of a population of prairie birds using population-specific values for fecundity and postfledging survival. During 2001-2003, we radiomarked 67 female...
Effects of somatostatin on the growth hormone-insulin-like growth factor axis and seawater adaptation of rainbow trout (Oncorhynchus mykiss)
J. Poppinga, J. Kittilson, S. D. McCormick, M.A. Sheridan
2007, Aquaculture (273) 312-319
Growth hormone (GH) has been shown to contribute to the seawater (SW) adaptability of euryhaline fish both directly and indirectly through insulin-like growth factor-1 (IGF-1). This study examined the role of somatostatin-14 (SS-14), a potent inhibitor of GH, on the GH-IGF-1 axis and seawater adaptation. Juvenile rainbow trout (Oncorhynchus mykiss)...
Evidence of widespread natural reproduction by lake trout Salvelinus namaycush in the Michigan waters of Lake Huron
S.C. Riley, J.X. He, J.E. Johnson, T. P. O’Brien, J.S. Schaeffer
2007, Journal of Great Lakes Research (33) 917-921
Localized natural reproduction of lake trout Salvelinus namaycush in Lake Huron has occurred since the 1980s near Thunder Bay, Michigan. During 2004–2006, USGS spring and fall bottom trawl surveys captured 63 wild juvenile lake trout at depths ranging from 37–73 m at four of five ports in the Michigan waters of the...
A multi-scale segmentation approach to filling gaps in Landsat ETM+ SLC-off images
S.K. Maxwell, Gail L. Schmidt, James C. Storey
2007, International Journal of Remote Sensing (28) 5339-5356
On 31 May 2003, the Landsat Enhanced Thematic Plus (ETM+) Scan Line Corrector (SLC) failed, causing the scanning pattern to exhibit wedge-shaped scan-to-scan gaps. We developed a method that uses coincident spectral data to fill the image gaps. This method uses a multi-scale segment model, derived from a previous Landsat...
Constancy of the relation between floc size and density in San Francisco Bay
N. K. Ganju, D. H. Schoellhamer, M.C. Murrell, J. W. Gartner, S.A. Wright
2007, Proceedings in Marine Science (8) 75-91
The size and density of fine-sediment aggregates, or flocs, govern their transport and depositional properties. While the mass and volume concentrations of flocs can be measured directly or by optical methods, they must be determined simultaneously to gain an accurate density measurement. Results are presented from a tidal cycle study in...
Differential hormonal responses of Atlantic salmon parr and smolt to increased daylength: A possible developmental basis for smolting
S. D. McCormick, J. M. Shrimpton, S. Moriyama, Bjorn Thrandur Bjornsson
2007, Aquaculture (273) 337-344
In order to elucidate the developmental basis for smolting, Atlantic salmon, Salmo salar, parr ( 12.5??cm) were exposed to natural daylength (LDN) and increased daylength (LD16:8) starting in late February and gill Na+,K+-ATPase activity and circulating hormone levels monitored from January to May. Gill Na+,K+-ATPase activity...
Coseismic and post-seismic signatures of the Sumatra 2004 December and 2005 March earthquakes in GRACE satellite gravity
I. Panet, V. Mikhailov, M. Diament, F. Pollitz, G. King, O. de Viron, M. Holschneider, R. Biancale, J.-M. Lemoine
2007, Geophysical Journal International (171) 177-190
The GRACE satellite mission has been measuring the Earth's gravity field and its temporal variations since 2002 April. Although these variations are mainly due to mass transfer within the geofluid envelops, they also result from mass displacements associated with phenomena including glacial isostatic adjustment and earthquakes. However, these last...
Daily foraging patterns of adult Double-crested Cormorants during the breeding season
J.T.H. Coleman, M. E. Richmond
2007, Waterbirds (30) 189-198
We recorded the daily presence of Double-crested Cormorants (Phalacrocorax auritus) at the nesting island on Oneida Lake, New York, by monitoring the activities of 15 radio-tagged adults from July through September, 2000, using an automated data-logging receiver. A total of 24,464 acceptable detections was obtained for adult cormorants actively attempting...
Diel periodicity of drift of larval fishes in tributaries of Lake Ontario
J. H. Johnson, J.E. McKenna Jr.
2007, Journal of Freshwater Ecology (22) 347-350
Diel patterns of downstream drift were examined during mid-June in three tributaries of Lake Ontario. Larval fishes were collected in drift nets that were set in each stream for 72 consecutive hours and emptied at 4-h intervals. Fantail darter (Ethostoma flabellare) and blacknose dace (Rhinichthys atractulus) were the two most...
Regional magnetic anomalies, crustal strength, and the location of the northern Cordilleran fold-and-thrust belt
R. W. Saltus, T. L. Hudson
2007, Geology (35) 567-570
The northern Cordilleran fold-and-thrust belt in Canada and Alaska is at the boundary between the broad continental margin mobile belt and the stable North American craton. The fold-and-thrust belt is marked by several significant changes in geometry: cratonward extensions in the central Yukon Territory and northeastern Alaska are separated by...
Young cumulate complex beneath Veniaminof caldera, Aleutian arc, dated by zircon in erupted plutonic blocks
C. R. Bacon, T.W. Sison, F.K. Mazdab
2007, Geology (35) 491-494
Mount Veniaminof volcano, Alaska Peninsula, provides an opportunity to relate Quaternary volcanic rocks to a coeval intrusive complex. Veniaminof erupted tholeiitic basalt through dacite in the past ∼260 k.y. Gabbro, diorite, and miarolitic granodiorite blocks, ejected 3700 14C yr B.P. in the most recent...
Potential strategies for recovery of lake whitefish and lake herring stocks in eastern Lake Erie
K. Oldenburg, M.A. Stapanian, P.A. Ryan, E. Holm
2007, Journal of Great Lakes Research (33) 46-58
Lake Erie sustained large populations of ciscoes (Salmonidae: Coregoninae) 120 years ago. By the end of the 19th century, abundance of lake whitefish (Coregonus clupeaformis) had declined drastically. By 1925, the lake herring (a cisco) population (Coregonus artedii) had collapsed, although a limited lake herring fishery persisted in the eastern basin until...
Intra- and interlaboratory variability in acute toxicity tests with glochidia and juveniles of freshwater mussels (Unionidae)
N. Wang, T. Augspurger, M.C. Barnhart, Joseph R. Bidwell, W.G. Cope, F.J. Dwyer, S. Geis, I.E. Greer, C.G. Ingersoll, C.M. Kane, T.W. May, R. J. Neves, T.J. Newton, A.D. Roberts, D.W. Whites
2007, Environmental Toxicology and Chemistry (26) 2029-2035
The present study evaluated the performance and variability in acute toxicity tests with glochidia and newly transformed juvenile mussels using the standard methods outlined in American Society for Testing and Materials (ASTM). Multiple 48-h toxicity tests with glochidia and 96-h tests with juvenile mussels were conducted within a single laboratory...
Northeast Kansas well tests oil, gas possibilities in Precambrian rocks
D. F. Merriam, K.D. Newell, J.H. Doveton, L.M. Magnuson, B.S. Lollar, W.M. Waggoner
2007, Oil & Gas Journal (105) 54-58
Tests for oil and gas prospects in Precambrian rocks in Northeast Kansas is currently being undertaken by WTW Operating LLC. It drilled in late 2005 the no.1 Wilson well with a depth of 5,772ft, 1,826ft into the Precambrian basement on a venture testing the possibility of oil and gas in...
Toward a transport-based analysis of nutrient spiraling and uptake in streams
Robert L. Runkel
2007, Limnology and Oceanography: Methods (5) 50-62
Nutrient addition experiments are designed to study the cycling of nutrients in stream ecosystems where hydrologic and nonhydrologic processes determine nutrient fate. Because of the importance of hydrologic processes in stream ecosystems, a conceptual model known as nutrient spiraling is frequently employed. A central part of the nutrient spiraling approach...
Relationship of Caspian tern foraging ecology to nesting success in the Columbia River estuary, Oregon, USA
Scott K. Anderson, D.D. Roby, Donald E. Lyons, K. Collis
2007, Estuarine, Coastal and Shelf Science (73) 447-456
The prevalence of juvenile salmonids (Oncorhynchus spp.) and marine forage fishes in the diet of Caspian terns (Hydroprogne caspia) nesting in the Columbia River estuary has been established, but the relationship between diet composition, foraging distribution, and productivity of these birds has received little attention. We used radio-telemetry and on-colony...
Morphological variation of siscowet lake trout in Lake Superior
C.R. Bronte, S.A. Moore
2007, Transactions of the American Fisheries Society (136) 509-517
Historically, Lake Superior has contained many morphologically distinct forms of the lake trout Salvelinus namaycush that have occupied specific depths and locations and spawned at specific times of the year. Today, as was probably the case historically, the siscowet morphotype is the most abundant. Recent interest in harvesting siscowets to extract oil...
The geology of asbestos in the United States and its practical applications
B. S. Van Gosen
2007, Environmental & Engineering Geoscience (13) 55-68
Recently, naturally occurring asbestos (NOA) has drawn the attention of numerous health and regulatory agencies and citizen groups. NOA can be released airborne by (1) the disturbance of asbestos-bearing bedrocks through human activities or natural weathering, and (2) the mining and milling of some mineral deposits in which asbestos occurs...
Chronology of Miocene-Pliocene deposits at Split Mountain Gorge, Southern California: A record of regional tectonics and Colorado River evolution
R.J. Dorsey, A. Fluette, K. McDougall, B.A. Housen, S. U. Janecke, G.J. Axen, C.R. Shirvell
2007, Geology (35) 57-60
Late Miocene to early Pliocene deposit at Split Mountain Gorge, California, preserve a record of basinal response to changes in regional tectonics, paleogeography, and evolution of the Colorado River. The base of the Elephant Trees Formation, magnetostratigraphically dated as 8.1 ?? 0.4 Ma, provides the earliest well-dated record of extension...
Spatial and temporal migration patterns of Wilson's Warbler (Wilsonia pusilla) in the southwest as revealed by stable isotopes
K.L. Paxton, Charles van Riper III, T.C. Theimer, E. H. Paxton
2007, The Auk (124) 162-175
We used stable hydrogen isotopes (δD) to identify the breeding locations of Wilson’s Warbler (Wilsonia pusilla) migrating through five sites spanning a cross-section of the species’ southwestern migration route during the springs of 2003 and 2004. Determining the temporal and spatial patterns of migration and degree of population segregation during...
