Trip report: pilot study of factors linking watershed function and coastal ecosystem health in American Samoa
Carter T. Atkinson, Arthur C. Medeiros
2010, Open-File Report 2006-1383
Coral reef resources in the territory of American Samoa face significant problems from overfishing, non-point source pollution, global warming, and continuing population growth and development. The islands are still relatively isolated relative to other parts of the Pacific and have managed to avoid some of the more devastating invasive species...
Introduction to pathways of metal transfer from mineralized sources to biorecptors
Roger P. Ashley, Elizabeth A. Bailey, Laurie S. Balistrieri, Andrea L. Foster, Larry P. Gough, Floyd Gray, Randolph A. Koski, James J. Rytuba, Robert R. Seal II, Kathleen S. Smith, Lisa L. Stillings, Richard B. Wanty
2010, Bulletin 2191-1
Since 1995, the Mineral Resources Program of the U.S. Geological Survey has funded a number of studies in the western United States that address environmental issues associated with mineral deposits....
Geology highlights for Ride the Rockies 2010
J. L. Slate, Amber Hess, D.R. Van Sistine
2010, General Information Product 108
The author provides a brief description of the geology along the route for each day of the ride, from June 13 through June 19, 2010. Ride the Rockies begins in Grand Junction, with stops in Delta, Ouray, Durango, Pagosa Springs, Alamosa, and ends in Salida, Colorado. A small, generalized geologic...
Lithologic and physicochemical properties and hydraulics of flow in and near the freshwater/saline-water transition zone, San Antonio segment of the Edwards aquifer, south-central Texas, based on water-level and borehole geophysical log data, 1999-2007
Rebecca B. Lambert, Andrew G. Hunt, Gregory P. Stanton, Michael B. Nyman
2010, Scientific Investigations Report 2010-5122
The freshwater zone of the San Antonio segment of the Edwards aquifer in south-central Texas (hereinafter, the Edwards aquifer) is bounded to the south and southeast by a zone of transition from freshwater to saline water (hereinafter, the transition zone). The boundary between the two zones is the freshwater/saline-water interface...
Summary of Bed-Sediment Measurements Along the Platte River, Nebraska, 1931-2009
P.J. Kinzel, J.T. Runge
2010, Fact Sheet 2010-3087
Rivers are conduits for water and sediment supplied from upstream sources. The sizes of the sediments that a river bed consists of typically decrease in a downstream direction because of natural sorting. However, other factors can affect the caliber of bed sediment including changes in upstream water-resource development, land use,...
Poster for Ride the Rockies 2010
J. L. Slate, Amber Hess, D.R. Van Sistine
2010, General Information Product 109
To download other USGS materials related to Ride The Rockies, go to http://www.cr.usgs.gov/rtr/index.html...
Postcard for Ride the Rockies 2010
D.R. Van Sistine
2010, General Information Product 107
2010 Ride The Rockies route on shaded-relief mosaic of USGS Landsat 7 satellite images, southwestern Colorado....
Ontological Issues for national topographic mapping
Dalia E. Varanka, E. Lynn Usery
2010, Cartographica: The International Journal for Geographic Information and Geovisualization (45) 103-104
No abstract available....
Accumulation of current-use and organochlorine pesticides in crab embyros from northern California, USA
K.L. Smalling, S. Morgan, Kathryn Kuivila
2010, Environmental Toxicology and Chemistry (29) 2593-2599
Invertebrates have long been used as resident sentinels for assessing ecosystem health and productivity. The shore crabs, Hemigrapsus oregonensis and Pachygrapsus crassipes, are abundant in estuaries and beaches throughout northern California, USA and have been used as indicators of habitat conditions in several salt marshes. The overall objectives of the...
Very rapid geomagnetic field change recorded by the partial remagnetization of a lava flow
Scott W. Bogue, Jonathan M.G. Glen
2010, Geophysical Research Letters (37)
A new paleomagnetic result from a lava flow with a distinctive, two-part remanence reinforces the controversial hypothesis that geomagnetic change during a polarity reversal can be much faster than normal. The 3.9-m-thick lava (“Flow 20”) is exposed in the Sheep Creek Range (north central Nevada) and was erupted during a...
Woodpecker densities in the big woods of Arkansas
J.D. Luscier, David G. Krementz
2010, Journal of Fish and Wildlife Management (1) 102-110
Sightings of the now-feared-extinct ivory-billed woodpecker Campephilus principalis in 2004 in the Big Woods of Arkansas initiated a series of studies on how to best manage habitat for this endangered species as well as all woodpeckers in the area. Previous work suggested that densities of other woodpeckers, particularly pileated Dryocopus...
Biological communities in San Francisco Bay track large‐scale climate forcing over the North Pacific
James E. Cloern, Kathryn Hieb, Teresa Jacobson, Bruno Sanso, Emanuele Di Lorenzo, Mark T. Stacey, John L. Largier, Wendy Meiring, William T Peterson, Thomas M. Powell, Monika Winder, Alan D. Jassby
2010, Geophysical Research Letters (37)
Long‐term observations show that fish and plankton populations in the ocean fluctuate in synchrony with large‐scale climate patterns, but similar evidence is lacking for estuaries because of shorter observational records. Marine fish and invertebrates have been sampled in San Francisco Bay since 1980 and exhibit large, unexplained population changes including...
New insight into lunar impact melt mobility from the LRO camera
Veronica J. Bray, Livio L. Tornabene, Laszlo P. Keszthelyi, Alfred S. McEwen, B. Ray Hawke, Thomas A. Giguere, Simon A. Kattenhorn, William B. Garry, Bashar Rizk, C.M. Caudill, Lisa R. Gaddis, Carolyn H. van der Bogert
2010, Geophysical Research Letters (37)
The Lunar Reconnaissance Orbiter Camera (LROC) is systematically imaging impact melt deposits in and around lunar craters at meter and sub-meter scales. These images reveal that lunar impact melts, although morphologically similar to terrestrial lava flows of similar size, exhibit distinctive features (e.g., erosional channels). Although generated in a single...
Assessment and monitoring of recreation impacts and resource conditions on mountain summits: Examples from the Northern Forest, USA
Christopher A. Monz, Jeffrey L. Marion, Kelly A. Goonan, Robert E. Manning, Jeremy Wimpey, Christopher Carr
2010, Mountain Research and Development (30) 332-343
Mountain summits present a unique challenge to manage sustainably: they are ecologically important and, in many circumstances, under high demand for recreation and tourism activities. This article presents recent advances in the assessment of resource conditions and visitor disturbance in mountain summit environments, by drawing on examples from a multiyear,...
Foraging proficiency during the nonbreeding season of a specialized forager: are juvenile American Oystercatchers "bumble-beaks" compared to adults?
Christine E. Hand, Felicia J. Sanders, Patrick G.R. Jodice
2010, Condor (112) 670-675
In many species, immature individuals are less proficient at foraging than are adults, and this difference may be especially critical during winter when survival can be at its minimum. We investigated the foraging proficiency of adult and immature American Oystercatchers (Haematopus palliatus) during the nonbreeding season. Oystercatchers forage on prey...
Thermal constraints to the sporogonic development and altitudinal distribution of avian malaria Plasmodium relictum in Hawai'i
Dennis A. LaPointe, M.L. Goff, Carter T. Atkinson
2010, Journal of Parasitology (96) 318-324
More than half of the Hawaiian honeycreepers (Drepanidinae) known from historical records are now extinct. Introduced mosquito-borne disease, in particular the avian malaria Plasmodium relictum, has been incriminated as a leading cause of extinction during the 20th century and a major limiting factor in the recovery of remaining species populations....
Evaluation of the extent of contamination caused by historical mining in catchments of central Colorado
Stan E. Church, David L. Fey, Richard B. Wanty, Travis S. Schmidt, T. L. Klein, Barnaby W. Rockwell, Carma A. San Juan
2010, Conference Paper, Geological Society of America Denver Annual Meeting
The U.S. Geological Survey conducted an assessment of stream water and sediment quality in central Colorado, an area of about 54,000 km2. The study area is focused on small tributary catchments in the Rocky Mountains. The Colorado Mineral belt, a northeast-trending mineralized zone that experienced base- and precious-metal mining at...
ARCTOS: a relational database relating specimens, specimen-based science, and archival documentation
Gordon H. Jarrell, Cindy A. Ramotnik, D.L. McDonald
2010, Conference Paper, Geological Society of America Annual Meeting
Data are preserved when they are perpetually discoverable, but even in the Information Age, discovery of legacy data appropriate to particular investigations is uncertain. Secure Internet storage is necessary but insufficient. Data can be discovered only when they are adequately described, and visibility increases markedly if the data are related...
Global mineral resource assessment: porphyry copper assessment of Mexico: Chapter A in Global mineral resource assessment
Jane M. Hammarstrom, Gilpin R. Robinson Jr., Steve Ludington, Floyd Gray, Benjamin J. Drenth, Francisco Cendejas-Cruz, Enrique Espinosa, Efren Perez-Segura, Martin Valencia-Moreno, Jose Luis Rodriguez-Castaneda, Rigobert Vasquez-Mendoza, Lukas Zürcher
2010, Scientific Investigations Report 2010-5090-A
Mineral resource assessments provide a synthesis of available information about distributions of mineral deposits in the Earth’s crust. A probabilistic mineral resource assessment of undiscovered resources in porphyry copper deposits in Mexico was done as part of a global mineral resource assessment. The purpose of the study was to (1)...
Biological water-quality assessment of selected streams in the Milwaukee Metropolitan Sewerage District Planning Area of Wisconsin, 2007
Barbara C. Scudder Eikenberry, Amanda H. Bell, Daniel J. Sullivan, Michelle A. Lutz, David A. Alvarez
2010, Scientific Investigations Report 2010-5166
Changes in the water quality of stream ecosystems in an urban area may manifest in conspicuous ways, such as in murky or smelly streamwater, or in less conspicuous ways, such as fewer native or pollution-sensitive organisms. In 2004, and again in 2007, the U.S. Geological Survey sampled stream organisms—algae, invertebrates,...
Potential effects of coalbed natural gas development on fish and aquatic resources
Aida M. Farag, David D. Harper, Anna C. Senecal, Arthur E. Hubert
K.J. Reddy, editor(s)
2010, Book chapter, Coalbed natural gas: Energy and environment
The purpose of this chapter is to provide a summary of issues and findings related to the potential effects of coalbed natural gas (CBNG) development on fish and other aquatic resources. We reviewed CBNG issues from across the United States and used the Powder River Basin of Wyoming as a...
Empirical models of wind conditions on Upper Klamath Lake, Oregon
Norman L. Buccola, Tamara M. Wood
2010, Scientific Investigations Report 2010-5201
Upper Klamath Lake is a large (230 square kilometers), shallow (mean depth 2.8 meters at full pool) lake in southern Oregon. Lake circulation patterns are driven largely by wind, and the resulting currents affect the water quality and ecology of the lake. To support hydrodynamic modeling of the lake and...
Geologic map of the Maumee quadrangle, Searcy and Marion Counties, Arkansas
Kenzie J. Turner, Mark R. Hudson
2010, Scientific Investigations Map 3134
This map summarizes the geology of the Maumee 7.5-minute quadrangle in northern Arkansas. The map area is in the Ozark plateaus region on the southern flank of the Ozark dome. The Springfield Plateau, composed of Mississippian cherty limestone, overlies the Salem Plateau, composed of Ordovician carbonate and clastic rocks, with...
Constituent concentrations, loads, and yields to Beaver Lake, Arkansas, water years 1999-2008
Susan E. Bolyard, Jeanne L. De Lanois, W. Reed Green
2010, Scientific Investigations Report 2010-5181
Beaver Lake is a large, deep-storage reservoir used as a drinking-water supply and considered a primary watershed of concern in the State of Arkansas. As such, information is needed to assess water quality, especially nutrient enrichment, nutrient-algal relations, turbidity, and sediment issues within the reservoir system. Water-quality samples were collected...
Groundwater resources of the East Mountain area, Bernalillo, Sandoval, Santa Fe, and Torrance Counties, New Mexico, 2005
James R. Bartolino, Scott K. Anderholm, Nathan C. Myers
2010, Scientific Investigations Report 2009-5204
The groundwater resources of about 400 square miles of the East Mountain area of Bernalillo, Sandoval, Santa Fe, and Torrance Counties in central New Mexico were evaluated by using groundwater levels and water-quality analyses, and updated geologic mapping. Substantial development in the study area (population increased by 11,000, or 50...
