Bioenergetic model estimates of interannual and spatial patterns in consumption demand and growth potential of juvenile pink salmon (Oncorhynchus gorbuscha) in the Gulf of Alaska
J.H. Moss, D.A. Beauchamp, A.D. Cross, E.V. Farley, J.M. Murphy, J.H. Helle, R.V. Walker, K.W. Myers
2009, Deep-Sea Research Part II: Topical Studies in Oceanography (56) 2553-2559
A bioenergetic model of juvenile pink salmon (Oncorhynchus gorbuscha) was used to estimate daily prey consumption and growth potential of four ocean habitats in the Gulf of Alaska during 2001 and 2002. Growth potential was not significantly higher in 2002 than in 2001 at an alpha level of 0.05 (P=0.073)....
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)...
Accelerated weathering of limestone for CO2 mitigation opportunities for the stone and cement industries
W. H. Langer, C.A.S. Juan, G.H. Rau, K. Caldeira
2009, Conference Paper, SME Annual Meeting and Exhibit and CMA's 111th National Western Mining Conference 2009
Large amounts of limestone fines coproduced during the processing of crushed limestone may be useful in the sequestration of carbon dioxide (CO 2). Accelerated weathering of limestone (AWL) is proposed as a low-tech method to capture and sequester CO2 from fossil fuel-fired power plants and other point-sources such as cement...
Global irrigated area map (GIAM), derived from remote sensing, for the end of the last millennium
P.S. Thenkabail, C.M. Biradar, P. Noojipady, V. Dheeravath, Y. Li, M. Velpuri, M. Gumma, O.R.P. Gangalakunta, H. Turral, X. Cai, J. Vithanage, M.A. Schull, R. Dutta
2009, International Journal of Remote Sensing (30) 3679-3733
A Global Irrigated Area Map (GIAM) has been produced for the end of the last millennium using multiple satellite sensor, secondary, Google Earth and groundtruth data. The data included: (a) Advanced Very High Resolution Radiometer (AVHRR) 3-band and Normalized Difference Vegetation Index (NDVI) 10 km monthly time-series for 1997-1999, (b)...
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...
Seven questions to sustainability
W. H. Langer
2009, Aggregates Manager (14) 40-40
Sustainability action plan
W. H. Langer
2009, Aggregates Manager (14) 44-44
Wild felids as hosts for human plague, Western United States
S.N. Bevins, J.A. Tracey, S.P. Franklin, V.L. Schmit, M.L. MacMillan, K.L. Gage, M.E. Schriefer, K.A. Logan, L.L. Sweanor, M.W. Alldredge, C. Krumm, W.M. Boyce, W. Vickers, S.P.D. Riley, L.M. Lyren, E. E. Boydston, Robert N. Fisher, M.E. Roelke, M. Salman, K.R. Crooks, S. VandeWoude
2009, Emerging Infectious Diseases (15) 2021-2024
Plague seroprevalence was estimated in populations pumas and bobcats in the western United States. High levels of exposure in plague-endemic regions indicate the need to consider the ecology and pathobiology of plague nondomestic felid hosts to better understand the role of these species in disease persistence and transmission....
The Adopt-a-Herring program as a fisheries conservation tool
Holly J. Frank, Martha E. Mather, Robert M. Muth, Sarah M. Pautzke, Joseph M. Smith, John T. Finn
2009, Fisheries (34) 496-507
Successful conservation depends on a scientifically literate public. We developed the adopt-a-Herring program to educate nonscientists about fisheries and watershed restoration. this interactive educational and outreach project encouraged coastal residents to be involved in local watershed restoration. In the northeastern United States, river herring (Alosa spp.) are an important component...
Testing road surface treatments to reduce erosion in forest roads in Honduras [Tratamientos de la superficie de rodadura para reducir la erosion en caminos forestales en Honduras]
Samuel Rivera, Jeffrey L. Kershner, Gordon R. Keller
2009, Ciencia e Investigacion Agraria (36) 425-432
Testing road surface treatments to reduce erosion in forest roads in Honduras. Cien. Inv. Agr. 36(3):425-432. Using forest roads produces more erosion and sedimentation than any other forest or agricultural activity. This study evaluated soil losses from a forest road in central Honduras over two consecutive years. We divided a...
Multi-segment earthquakes and tsunami potential of the Aleutian megathrust
I. Shennan, R. Bruhn, George Plafker
2009, Quaternary Science Reviews (28) 7-13
Large to great earthquakes and related tsunamis generated on the Aleutian megathrust produce major hazards for both the area of rupture and heavily populated coastlines around much of the Pacific Ocean. Here we use paleoseismic records preserved in coastal sediments to investigate whether segment boundaries control the largest ruptures or...
An integrated approach to assess broad-scale condition of coastal wetlands - The Gulf of Mexico Coastal Wetlands pilot survey
J.A. Nestlerode, V.D. Engle, P. Bourgeois, P.T. Heitmuller, J.M. Macauley, Y.C. Allen
2009, Conference Paper, Environmental Monitoring and Assessment
The Environmental Protection Agency (EPA) and U.S. Geological Survey (USGS) initiated a two-year regional pilot survey in 2007 to develop, test, and validate tools and approaches to assess the condition of northern Gulf of Mexico (GOM) coastal wetlands. Sampling sites were selected from estuarine and palustrine wetland areas with herbaceous,...
Groundwater's significance to changing hydrology, water chemistry, and biological communities of a floodplain ecosystem, Everglades, South Florida, USA
J. W. Harvey, P.V. McCormick
2009, Hydrogeology Journal (17) 185-201
The Everglades (Florida, USA) is one of the world's larger subtropical peatlands with biological communities adapted to waters low in total dissolved solids and nutrients. Detecting how the pre-drainage hydrological system has been altered is crucial to preserving its functional attributes. However, reliable tools for hindcasting historic conditions in the...
Mapping of accumulated nitrogen in the sediment pore water of a eutrophic lake in Iowa, USA
M.Z. Iqbal, C.L. Fields
2009, Environmental Geology (57) 465-475
A large pool of nitrogen in the sediment pore fluid of a eutrophic lake in Iowa, USA, was mapped in this study. Previously, the lake had supported fishing and boating, but today it no longer supports its designated uses as a recreational water body. In the top 5 cm of...
Two statistics for evaluating parameter identifiability and error reduction
John Doherty, Randall J. Hunt
2009, Journal of Hydrology (366) 119-127
Two statistics are presented that can be used to rank input parameters utilized by a model in terms of their relative identifiability based on a given or possible future calibration dataset. Identifiability is defined here as the capability of model calibration to constrain parameters used by a model. Both statistics...
Reproductive health of bass in the potomac, USA, drainage: Part 2. Seasonal occurrence of persistent and emerging organic contaminants
D.A. Alvarez, W.L. Cranor, S.D. Perkins, V.L. Schroeder, L. R. Iwanowicz, R.C. Clark, C.P. Guy, A.E. Pinkney, V. S. Blazer, J.E. Mullican
2009, Environmental Toxicology and Chemistry (28) 1084-1095
The seasonal occurrence of organic contaminants, many of which are potential endocrine disruptors, entering the Potomac River, USA, watershed was investigated using a two-pronged approach during the fall of 2005 and spring of 2006. Passive samplers (semipermeable membrane device and polar organic chemical integrative sampler [POCIS]) were deployed in tandem...
Site condition, structure, and growth of baldcypress along tidal/non-tidal salinity gradients
K. W. Krauss, J.A. Duberstein, T.W. Doyle, W.H. Conner, Richard H. Day, L.W. Inabinette, J.L. Whitbeck
2009, Wetlands (29) 505-519
This report documents changes in forest structure and growth potential of dominant trees in salt-impacted tidal and non-tidal baldcypress wetlands of the southeastern United States. We inventoried basal area and tree height, and monitored incremental growth (in basal area) of codominant baldcypress (Taxodium distichum) trees monthly, for over four years,...
Shallow water processes govern system-wide phytoplankton bloom dynamics: A modeling study
L.V. Lucas, Jeffrey R. Koseff, Stephen G. Monismith, J.K. Thompson
2009, Journal of Marine Systems (75) 70-86
A pseudo-two-dimensional numerical model of estuarine phytoplankton growth and consumption, vertical turbulent mixing, and idealized cross-estuary transport was developed and applied to South San Francisco Bay. This estuary has two bathymetrically distinct habitat types (deep channel, shallow shoal) and associated differences in local net rates of phytoplankton growth and consumption,...
Stress evolution following the 1999 Chi-Chi, Taiwan, earthquake: Consequences for afterslip, relaxation, aftershocks and departures from Omori decay
C.-H. Chan, R.S. Stein
2009, Geophysical Journal International (177) 179-192
We explore how Coulomb stress transfer and viscoelastic relaxation control afterslip and aftershocks in a continental thrust fault system. The 1999 September 21 Mw = 7.6 Chi-Chi shock is typical of continental ramp-d??collement systems throughout the world, and so inferences drawn from this uniquely well-recorded event may be widely applicable....
Integrating terrestrial LiDAR and stereo photogrammetry to map the Tolay lakebed in northern San Francisco Bay
Isa Woo, Rune Storesund Rune, John Y. Takekawa, Rachel J. Gardiner, Steve Ehret Steve
2009, Conference Paper, Planning for an uncertain future - Monitoring, integration, and adaptation
The Tolay Creek Watershed drains approximately 3,520 ha along the northern edge of San Francisco Bay. Surrounded by a mosaic of open space conservation easements and public wildlife areas, it is one of the only watersheds in this urbanized estuary that is protected from its headwaters to the bay. Tolay...
Sexing California Clapper Rails using morphological measurements
Cory T. Overton, Michael L. Casazza, John Y. Takekawa, Tobias M. Rohmer
2009, North American Bird Bander (34) 58-64
California Clapper Rails (Rallus longirostris obsoletus) have monomorphic plumage, a trait that makes identification of sex difficult without extensive behavioral observation or genetic testing. Using 31 Clapper Rails (22 females, 9 males), caught in south San Francisco Bay, CA, and using easily measurable morphological characteristics, we developed a discriminant function...
Geochemical evidence for African dust and volcanic ash inputs to terra rossa soils on carbonate reef terraces, northern Jamaica, West Indies
D.R. Muhs, J. R. Budahn
2009, Quaternary International (196) 13-35
The origin of red or reddish-brown, clay-rich, "terra rossa" soils on limestone has been debated for decades. A traditional qualitative explanation for their formation has been the accumulation of insoluble residues as the limestone is progressively dissolved over time. However, this mode of formation often requires unrealistic or impossible amounts...
Fuel age and fire spread: Natural conditions versus opportunities for fire suppression
Richard W. Halsey, Jon E. Keeley, Kit Wilson
2009, Fire Management Today (69) 22-28
Wildfires are driven and restrained by an interplay of variables that can lead to many potential outcomes. As every wildland firefighter learns in basic training, the ability of a fire to spread is determined by three basic variables: fuel type and condition, weather, and topography. Fire suppression obviously plays a...
Arc-continent collision and the formation of continental crust: A new geochemical and isotopic record from the Ordovician Tyrone Igneous Complex, Ireland
Amy E. Draut, Peter D. Clift, Jeffrey M. Amato, Jerzy Blusztajn, Hans Schouten
2009, Journal of the Geological Society (166) 485-500
Collisions between oceanic island-arc terranes and passive continental margins are thought to have been important in the formation of continental crust throughout much of Earth's history. Magmatic evolution during this stage of the plate-tectonic cycle is evident in several areas of the Ordovician Grampian-Taconic orogen, as we demonstrate in the...
Evaluation of irrigation canal networks to assess stream connectivity in a watershed
M.E. Colvin, C.M. Moffitt
2009, River Research and Applications (25) 486-496
We used digital data sets, aerial photos and direct field observations in a geographical information system to evaluate the stream habitat in an Idaho watershed affected by agriculture. We found that the scale of the digital data sets affected the outcome of the assessment due to the presence of dewatered...
