Shallow groundwater in the Matanuska-Susitna Valley, Alaska—Conceptualization and simulation of flow
Colin P. Kikuchi
2013, Scientific Investigations Report 2013-5049
The Matanuska-Susitna Valley is in the Upper Cook Inlet Basin and is currently undergoing rapid population growth outside of municipal water and sewer service areas. In response to concerns about the effects of increasing water use on future groundwater availability, a study was initiated between the Alaska Department of Natural...
Multi-regional synthesis of temporal trends in biotic assemblages in streams and rivers of the continental United States
Matthew P. Miller, Anne M.D. Brasher, Jonathan G. Keenen
2013, Scientific Investigations Report 2013-5046
Biotic assemblages in aquatic ecosystems are excellent integrators and indicators of changing environmental conditions within a watershed. Therefore, temporal changes in abiotic environmental variables often can be inferred from temporal changes in biotic assemblages. Algae, macroinvertebrate, and fish assemblage data were collected from 91 sampling sites in 4 geographic regions...
Missing great earthquakes
Susan E. Hough
2013, Journal of Geophysical Research B: Solid Earth 1098-1108
The occurrence of three earthquakes with moment magnitude (Mw) greater than 8.8 and six earthquakes larger than Mw 8.5, since 2004, has raised interest in the long-term global rate of great earthquakes. Past studies have focused on the analysis of earthquakes since 1900, which roughly marks the start of the...
The NAS Alert System: A look at the first eight years
Pamela L. Fuller, Matt Neilson, Dane H. Huge
2013, Fisheries (38) 128-138
The U.S. Geological Survey's Nonindigenous Aquatic Species (NAS) database program (http://nas.er.usgs.gov) tracks the distribution of introduced aquatic organisms across the United States. Awareness of, and timely response to, novel species introductions by those involved in nonindigenous aquatic species management and research requires a framework for rapid dissemination of occurrence data...
A new map of standardized terrestrial ecosystems of Africa
Roger G. Sayre, Patrick Comer, Jon Hak, Carmen Josse, Jacquie Bow, Harumi Warner, Mahamane Larwanou, Ensermu Kelbessa, Tamrat Bekele, Harald Kehl, Ruba Amena, Rado Andriamasimanana, Taibou Ba, Laurence Benson, Timothy Boucher, Matthew Brown, Jill J. Cress, Oueddo Dassering, Beverly A. Friesen, Francis Gachathi, Sebei Houcine, Mahamadou Keita, Erick Khamala, Dan Marangu, Fredrick Mokua, Boube Morou, Ladislav Mucina, Samuel Mugisha, Edward Mwavu, Michael Rutherford, Patrice Sanou, Stephen Syampungani, Bojoi Tomor, Abdallahi Ould Mohamed Vall, Jean Pierre Vande Weghe, Eunice Wangui, Lucy Waruingi
2013, African Geographical Review
Terrestrial ecosystems and vegetation of Africa were classified and mapped as part of a larger effort and global protocol (GEOSS – the Global Earth Observation System of Systems), which includes an activity to map terrestrial ecosystems of the earth in a standardized, robust, and practical manner, and at the finest...
Fisheries research and monitoring activities of the Lake Erie Biological Station, 2012
Richard T. Kraus, Mark Rogers, Patrick M. Kocovsky, William Edwards, Betsy L. Bodamer Scarbro, Kevin R. Keretz, R. Wirick
2013, Report
No abstract available....
Comparative spring-staging ecology of sympatric arctic-nesting geese in south-central Nebraska
Aaron T. Pearse, Gary L. Krapu, Robert R. Cox Jr.
2013, American Midland Naturalist (169) 371-381
The Rainwater Basin in Nebraska has been a historic staging area for midcontinent greater white-fronted geese (Anser albifrons frontalis) since the 1950s and, in the mid-1990s, millions of midcontinent lesser snow geese (Chen caerulescens caerulescens) expanded their spring migration route to include this region. In response to speculation...
Mapping spatial resources with GPS animal telemetry: foraging manatees locate seagrass beds in the Ten Thousand Islands, Florida, USA
Daniel H. Slone, James P. Reid, W. Judson Kenworthy
2013, Marine Ecology Progress Series (476) 285-299
Turbid water conditions make the delineation and characterization of benthic habitats difficult by traditional in situ and remote sensing methods. Here, we develop and validate modeling and sampling methodology for detecting and characterizing seagrass beds by analyzing GPS telemetry records from radio-tagged manatees. Between October 2002 and October 2005, 14...
Approaches to setting organism-based ballast water discharge standards
Henry Lee II, Deborah A. Reusser, Melanie Frazier
2013, Ecological Applications (23) 301-310
As a vector by which foreign species invade coastal and freshwater waterbodies, ballast water discharge from ships is recognized as a major environmental threat. The International Maritime Organization (IMO) drafted an international treaty establishing ballast water discharge standards based on the number of viable organisms per volume of ballast discharge...
Rapid microsatellite marker development using next generation pyrosequencing to inform invasive Burmese python -- Python molurus bivittatus -- management
Margaret E. Hunter, Kristen M. Hart
2013, International Journal of Molecular Sciences (14) 4793-4804
Invasive species represent an increasing threat to native ecosystems, harming indigenous taxa through predation, habitat modification, cross-species hybridization and alteration of ecosystem processes. Additionally, high economic costs are associated with environmental damage, restoration and control measures. The Burmese python, Python molurus bivittatus, is one of the most notable invasive species...
Web-based flood database for Colorado, water years 1867 through 2011
Michael S. Kohn, Robert D. Jarrett, Gary S. Krammes, Amanullah Mommandi
2013, Open-File Report 2012-1225
In order to provide a centralized repository of flood information for the State of Colorado, the U.S. Geological Survey, in cooperation with the Colorado Department of Transportation, created a Web-based geodatabase for flood information from water years 1867 through 2011 and data for paleofloods occurring in the past 5,000 to...
Counting at low concentrations: the statistical challenges of verifying ballast water discharge standards
Melanie Frazier, A. Whitman Miller, Henry Lee II, Deborah A. Reusser
2013, Ecological Applications (23) 339-351
Discharge from the ballast tanks of ships is one of the primary vectors of nonindigenous species in marine environments. To mitigate this environmental and economic threat, international, national, and state entities are establishing regulations to limit the concentration of living organisms that may be discharged from the ballast tanks of...
Per capita invasion probabilities: an empirical model to predict rates of invasion via ballast water
Deborah A. Reusser, Henry Lee II, Melanie Frazier, Gregory M. Ruiz, Paul W. Fofonoff, Mark S. Minton, A. Whitman Miller
2013, Ecological Applications (23) 321-330
Ballast water discharges are a major source of species introductions into marine and estuarine ecosystems. To mitigate the introduction of new invaders into these ecosystems, many agencies are proposing standards that establish upper concentration limits for organisms in ballast discharge. Ideally, ballast discharge standards will be biologically defensible and adequately...
Preliminary assessment of bioengineered fringing shoreline reefs in Grand Isle and Breton Sound, Louisiana
Megan La Peyre, Lindsay Schwarting, Shea Miller
2013, Open-File Report 2013-1040
Restoration of three-dimensional shell habitats in coastal Louisiana presents a valuable and potentially self-sustaining approach to providing shoreline protection and critical nekton habitat and may contribute to water quality maintenance. The use of what has been called “living shorelines” is particularly promising because in addition to the hypothesized shoreline protection...
Trends and causes of historical wetland loss in coastal Louisiana
Julie Bernier
2013, Fact Sheet 2013-3017
Wetland losses in the northern Gulf Coast region of the United States are so extensive that they represent critical concerns to government environmental agencies and natural resource managers. In Louisiana, almost 3,000 square kilometers (km2) of low-lying wetlands converted to open water between 1956 and 2004, and billions of dollars...
Baseline data for evaluating development trajectory and provision of ecosystem services of created fringing oyster reefs in Vermilion Bay, Louisiana
Megan La Peyre, Lindsay Schwarting, Shea Miller
2013, Open-File Report 2013-1053
Understanding the time frame in which ecosystem services (that is, water quality maintenance, shoreline protection, habitat provision) are expected to be provided is important when restoration projects are being designed and implemented. Restoration of three-dimensional shell habitats in coastal Louisiana and elsewhere presents a valuable and potentially self-sustaining approach to...
Gallium--A smart metal
Nora Foley, Brian W. Jaskula
2013, Fact Sheet 2013-3006
Gallium is a soft, silvery metallic element with an atomic number of 31 and the chemical symbol Ga. The French chemist Paul-Emile Lecoq de Boisbaudran discovered gallium in sphalerite (a zinc-sulfide mineral) in 1875 using spectroscopy. He named the element "gallia" after his native land of France (formerly Gaul; in...
California Groundwater Ambient Monitoring and Assessment (GAMA) Program Priority Basin Project--shallow aquifer assessment
Water Resources Division, U.S. Geological Survey
2013, Fact Sheet 2012-3136
The California State Water Resources Control Board’s (SWRCB) GAMA Program is a comprehensive assessment of statewide groundwater quality in California. From 2004 to 2012, the GAMA Program’s Priority Basin Project focused on assessing groundwater resources used for public drinking-water supplies. More than 2,000 public-supply wells were sampled by U.S. Geological...
Total petroleum systems and geologic assessment of undiscovered oil and gas resources in the San Juan Basin Province, exclusive of Paleozoic rocks, New Mexico and Colorado
U.S. Geological Survey San Juan Basin Assessment Team
2013, Data Series 69-F
In 2002, the U.S. Geological Survey (USGS) estimated undiscovered oil and gas resources that have the potential for additions to reserves in the San Juan Basin Province, New Mexico and Colorado. Paleozoic rocks were not appraised. The last oil and gas assessment for the province was in 1995. There are...
Landscape consequences of natural gas extraction in Allegheny and Susquehanna Counties, Pennsylvania, 2004--2010
E.T. Slonecker, L.E. Milheim, C.M. Roig-Silva, A.R. Malizia
2013, Open-File Report 2013-1025
Increased demands for cleaner burning energy, coupled with the relatively recent technological advances in accessing unconventional hydrocarbon-rich geologic formations, have led to an intense effort to find and extract natural gas from various underground sources around the country. One of these sources, the Marcellus Shale, located in the Allegheny Plateau,...
Geology and oil and gas assessment of the Mancos-Menefee Composite Total Petroleum System: Chapter 4 in Total petroleum systems and geologic assessment of undiscovered oil and gas resources in the San Juan Basin Province, exclusive of Paleozoic rocks, New Mexico and Colorado
J.L. Ridgley, S. M. Condon, J. R. Hatch
2013, Data Series 69-F-4
The Mancos-Menefee Composite Total Petroleum System (TPS) includes all genetically related hydrocarbons generated from organic-rich shales in the Cretaceous Mancos Shale and from carbonaceous shale, coal beds, and humate in the Cretaceous Menefee Formation of the Mesaverde Group. The system is called a composite total petroleum system because the exact...
Geology and oil and gas assessment of the Todilto Total Petroleum System, San Juan Basin Province, New Mexico and Colorado: Chapter 3 in Total petroleum systems and geologic assessment of undiscovered oil and gas resources in the San Juan Basin Province, exclusive of Paleozoic rocks, New Mexico and Colorado
J.L. Ridgley, J. R. Hatch
2013, Data Series 69-F-3
Organic-rich, shaly limestone beds, which contain hydrocarbon source beds in the lower part of the Jurassic Todilto Limestone Member of the Wanakah Formation, and sandstone reservoirs in the overlying Jurassic Entrada Sandstone, compose the Todilto Total Petroleum System (TPS). Source rock facies of the Todilto Limestone were deposited in a...
Executive summary--2002 assessment of undiscovered oil and gas resources in the San Juan Basin Province, exclusive of Paleozoic rocks, New Mexico and Colorado: Chapter 1 in Total petroleum systems and geologic assessment of undiscovered oil and gas resources in the San Juan Basin Province, exclusive of Paleozoic rocks, New Mexico and Colorado
U.S. Geological Survey San Juan Basin Assessment Team
2013, Data Series 69-F-1
In 2002, the U.S. Geological Survey (USGS) estimated undiscovered oil and gas resources that have the potential for additions to reserves in the San Juan Basin Province (5022), New Mexico and Colorado (fig. 1). Paleozoic rocks were not appraised. The last oil and gas assessment for the province was in...
Fort Collins Science Center Ecosystem Dynamics branch--interdisciplinary research for addressing complex natural resource issues across landscapes and time
Zachary H. Bowen, Cynthia P. Melcher, Juliette T. Wilson
2013, Fact Sheet 2013-3009
The Ecosystem Dynamics Branch of the Fort Collins Science Center offers an interdisciplinary team of talented and creative scientists with expertise in biology, botany, ecology, geology, biogeochemistry, physical sciences, geographic information systems, and remote-sensing, for tackling complex questions about natural resources. As demand for natural resources increases, the issues facing...
Flood-inundation maps for the White River at Spencer, Indiana
Elizabeth A. Nystrom
2013, Scientific Investigations Map 3251
Digital flood-inundation maps for a 5.3-mile reach of the White River at Spencer, Indiana, were created by the U.S. Geological Survey (USGS) in cooperation with the Indiana Office of Community and Rural Affairs. The inundation maps, which can be accessed through the USGS Flood Inundation Mapping Science Web site at...
