Structural equation modeling and the analysis of long-term monitoring data
James B. Grace, Jon E. Keeley, Darren Johnson, A Kenneth Bollen Kenneth
2012, Book chapter, Design and analysis of long-term ecological monitoring studies
The analysis of long-term monitoring data is increasingly important; not only for the discovery and documentation of changes in environmental systems, but also as an enterprise whose fruits validate the allocation of effort and scarce funds to monitoring. In simple terms, we may distinguish between the detection of change in...
Rapid late Pleistocene/Holocene uplift and coastal evolution of the southern Arabian (Persian) Gulf
Warren W. Wood, Richard M. Bailey, B. A. Hampton, Thomas F. Kraemer, Zhong Lu, David W. Clark, Rhodri H. R. James, Khalid Al Ramadan
2012, Quaternary Research (77) 215-220
The coastline along the southern Arabian Gulf between Al Jubail, Kingdom of Saudi Arabia, and Dubai, UAE, appears to have risen at least 125 m in the last 18,000 years. Dating and topographic surveying of paleo-dunes (43–53 ka), paleo-marine terraces (17–30 ka), and paleo-marine shorelines (3.3–5.5 ka)...
Wintering waterfowl respond to Wetlands Reserve Program lands in the Central Valley of California
Jeffrey J. Buler, Wylie C. Barrow Jr., Lori A. Randall
2012, Report
Daytime use by wintering waterfowl at Wetlands Reserve Program (WRP) sites within the northern Central Valley of California (CVC) increased dramatically after wetland restoration and was sustained for up to 8 years post-restoration. The magnitude of the increase in waterfowl density at WRP sites after wetland restoration was greater with...
Sensitivity of spring phenology to warming across temporal and spatial climate gradients in two independent databases
Benjamin I. Cook, Elizabeth M. Wolkovich, T. Jonathan Davies, Toby R. Ault, Julio L. Betancourt, Jenica M. Allen, Kjell Bolmgren, Elsa E. Cleland, Theresa Crimmins, Nathan J. B. Kraft, Lesley T. Lancaster, Susan J. Mazer, Gregory J. McCabe, Brian J. McGill, Camille Parmesan, Stephanie Pau, James Regetz, Nicolas Salamin, Mark D. Schwartz, Steven E. Travers
2012, Ecosystems (15) 1283-1294
Disparate ecological datasets are often organized into databases post hoc and then analyzed and interpreted in ways that may diverge from the purposes of the original data collections. Few studies, however, have attempted to quantify how biases inherent in these data (for example, species richness, replication, climate) affect their suitability...
Extended Kalman Filter framework for forecasting shoreline evolution
Joseph Long, Nathaniel G. Plant
2012, Geophysical Research Letters (39)
A shoreline change model incorporating both long- and short-term evolution is integrated into a data assimilation framework that uses sparse observations to generate an updated forecast of shoreline position and to estimate unobserved geophysical variables and model parameters. Application of the assimilation algorithm provides quantitative statistical estimates of combined model-data...
Helicopter electromagnetic data map ice thickness at Mount Adams and Mount Baker, Washington, USA
Carol A. Finn, Maria Deszcz-Pan, Paul A. Bedrosian
2012, Journal of Glaciology (58) 1133-1143
Ice-thickness measurements critical for flood and mudflow hazard studies are very sparse on Cascade Range (North America) volcanoes. Helicopter electromagnetic (HEM) data collected to detect hydrothermal alteration are used to determine ice thickness over portions of Mount Baker and Mount Adams volcanoes. A laterally continuous inversion method provides good estimates...
Impacts of climate change on ecosystem services
Peter Kareiva, Mary Ruckleshaus, Katie K. Arkema, Gary Geller, Evan Girvetz, Dave Goodrich, Erik Nelson, Virginia Matzek, Malin Pinsky, Walt Reid, Martin Saunders, Darius J. Semmens, Heather Tallis
2012, Book chapter, Impacts of climate change on biodiversity, ecosystems, and ecosystem services: technical input to the 2013 National Climate Assessment
Key Findings By 2050, climate change will triple the fraction of counties in the U.S. that are at high or extremely high risk of outstripping their water supplies (from 10 percent to 32 percent). The most at risk areas in the U.S. are the West, Southwest and Great Plains regions....
Unraveling Alleghanian orogenesis in southern Connecticut: The history of the Lyme Dome
Gregory J. Walsh, John N. Aleinikoff, Robert P. Wintsch
2012, Conference Paper, Guidebook for fieldtrips in Connecticut and Massachusetts
No abstract available....
Bedrock basins in the Sierra Nevada, Alta California
James G. Moore, Mary A. Gorden, Thomas W. Sisson
2012, California Archaeology (4) 99-122
A 360-km-long belt of more than 1,400 meter-sized granitic bedrock basins occurs at 1,200 to 2,500 m elevation on the west flank of the Sierra Nevada. The circular, smooth basins are 0.7 to 1.7 min diameter and are commonly 50 to 1,000 liters in volume. They are man-made as shown by their restricted...
Landslide inventory maps of the Gales Creek quadrangle, Washington County, Oregon
W. J. Burns, S. Duplantis, K. A. Mickelson, J. M. Spritzer, Ray Wells
2012, Interactive Map Series 46
No abstract available....
Repeat surveys of spawning cisco (Coregonus artedi) in western Lake Superior: Timing, distribution and composition of spawning stocks
Daniel L. Yule, Donald R. Schreiner, Peter A. Addison, Michael J. Seider, Lori M. Evrard, Steven A. Geving, Henry R. Quinlan
2012, Advances in Limnology (63) 65-87
Acoustic (AC) and midwater trawl (MT) surveys of spawning cisco (Coregonus artedi) in Lake Superior have been combined with commercial yield to estimate exploitation. To time surveys properly, it is important to understand when adults typically arrive at spawning grounds and how numbers change as the spawning season progresses. We...
Sources of shaking and flooding during the Tohoku-Oki earthquake: a mixture of rupture styles
Shengji Wei, Robert Graves, Don Helmberger, Jean-Philippe Avouac, Junle Jiang
2012, Earth and Planetary Science Letters (333-334) 91-100
Modeling strong ground motions from great subduction zone earthquakes is one of the great challenges of computational seismology. To separate the rupture characteristics from complexities caused by 3D sub-surface geology requires an extraordinary data set such as provided by the recent Mw9.0 Tohoku-Oki earthquake. Here we combine deterministic inversion and...
Population genetic structure of a widespread coniferous tree, Taxodium distichum [L.] Rich. (Cupressaceae), in the Mississippi River Alluvial Valley and Florida
Ayako Tanaka, Masato Ohtani, Yoshihisa Suyama, Nobuyuki Inomata, Yoshihiko Tsumura, Beth A. Middleton, Hidenori Tachida, Junko Kusumi
2012, Tree Genetics and Genomes (8) 1135-1147
Studies of genetic variation can elucidate the structure of present and past populations as well as the genetic basis of the phenotypic variability of species. Taxodium distichum is a coniferous tree dominant in lowland river flood plains and swamps of the southeastern USA which exhibits morphological variability and adaption to...
Establishment of sentinel sampling sites to monitor changes in water and sediment quality and biota related to visitor use at Lake Powell, Arizona and Utah, 2004-2006
Robert J. Hart, Howard E. Taylor, G.M. Anderson
2012, Open-File Report 2012-1237
Twenty sentinel sampling sites were established and sampled during 2004–06 at Lake Powell, Arizona and Utah, by the U.S. Geological Survey and the National Park Service—Glen Canyon National Recreation Area. The sentinel sampling sites provide sampling locations on Lake Powell, the Nation’s second largest reservoir that can be visited and...
A general theory of multimetric indices and their properties
Donald R. Schoolmaster Jr., James B. Grace, E. William Schweiger
2012, Methods in Ecology and Evolution (3) 773-781
1. Stewardship of biological and ecological resources requires the ability to make integrative assessments of ecological integrity. One of the emerging methods for making such integrative assessments is multimetric indices (MMIs). These indices synthesize data, often from multiple levels of biological organization, with the goal of deriving a single index...
Subsidy or subtraction: how do terrestrial inputs influence consumer production in lakes?
Stuart E. Jones, Christopher T. Solomon, Brian Weidel
2012, Freshwater Reviews (5) 37-49
Cross-ecosystem fluxes are ubiquitous in food webs and are generally thought of as subsidies to consumer populations. Yet external or allochthonous inputs may in fact have complex and habitat-specific effects on recipient ecosystems. In lakes, terrestrial inputs of organic carbon contribute to basal resource availability, but can also reduce resource...
Mysis diluviana and Hemimysis anomala: reviewing the roles of a native and invasive mysid in the Laurentian Great Lakes region
Maureen G. Walsh, Brent T. Boscarino, Jerome Marty, Ora E. Johannsson
2012, Journal of Great Lakes Research (38) 1-6
Mysis diluviana and Hemimysis anomala are the only two species of mysid shrimps in the order Mysidacea that are present in the Laurentian Great Lakes of North America. M. diluviana has inhabited the deep, cold waters of this region since Pleistocene-era glacial retreat and is widely considered to have a...
Significant motions between GPS sites in the New Madrid region: implications for seismic hazard
Arthur Frankel, Robert Smalley, J. Paul
2012, Bulletin of the Seismological Society of America (102) 479-489
Position time series from Global Positioning System (GPS) stations in the New Madrid region were differenced to determine the relative motions between stations. Uncertainties in rates were estimated using a three‐component noise model consisting of white, flicker, and random walk noise, following the methodology of Langbein, 2004. Significant motions of...
Analysis of host genetic diversity and viral entry as sources of between-host variation in viral load
Andrew R. Wargo, Alison M. Kell, Robert J. Scott, Gary H. Thorgaard, Gael Kurath
2012, Virus Research (165) 71-80
Little is known about the factors that drive the high levels of between-host variation in pathogen burden that are frequently observed in viral infections. Here, two factors thought to impact viral load variability, host genetic diversity and stochastic processes linked with viral entry into the host, were examined. This work...
Application of the control volume mixed finite element method to a triangular discretization
Richard L. Naff
2012, International Journal for Numerical Methods in Engineering (89) 846-868
A two‐dimensional control volume mixed finite element method is applied to the elliptic equation. Discretization of the computational domain is based in triangular elements. Shape functions and test functions are formulated on the basis of an equilateral reference triangle with unit edges. A pressure support based on...
Loss and modification of habitat
Francis Lemckert, Stephen Hecnar, David S. Pilliod
2012, Book chapter, Conservation and decline of amphibians: Ecological aspects, effect of humans, and management
Amphibians live in a wide variety of habitats around the world, many of which have been modified or destroyed by human activities. Most species have unique life history characteristics adapted to specific climates, habitats (e.g., lentic, lotic, terrestrial, arboreal, fossorial, amphibious), and local conditions that provide suitable areas for reproduction,...
Life history characteristics of a recovering lake whitefish Coregonus clupeaformis stock in the Detroit River, North America
Edward F. Roseman, Gregory W. Kennedy, Bruce A. Manny, James Boase, James McFee
Ross F. Tallman, Kimberly L. Howland, Michael D. Rennie, Kenneth Mills, editor(s)
2012, Advances in Limnology (63) 477-501
The Detroit River is part of a channel connecting Lakes Huron and Erie and was once a prolific spawning area for lake whitefish, Coregonus clupeaformis. Large numbers of lake whitefish migrated into the river to spawn where they were harvested by commercial fisheries and for fish culture operations. Prior to...
Thermal infrared remote sensing of water temperature in riverine landscapes
R. N Handcock, Christian E. Torgersen, K. A Cherkauer, A. R Gillespie, K Tockner, R. N. Faux, Jing Tan
Patrice E. Carbonneau, Hervé Piégay, editor(s)
2012, Book chapter, Fluvial remote sensing for science and management
Water temperature in riverine landscapes is an important regional indicator of water quality that is influenced by both ground- and surface-water inputs, and indirectly by land use in the surrounding watershed (Brown and Krygier, 1970; Beschta et al., 1987; Chen et al., 1998; Poole and Berman, 2001). Coldwater fishes such...
Ecological impacts of non-native species
David S. Pilliod, R.A. Griffiths, S.L. Kuzmin
Harold Heatwole, John W. Wilkinson, editor(s)
2012, Book chapter, Conservation and decline of amphibians: Ecological aspects, effect of humans, and management
Non-native species are considered one of the greatest threats to freshwater biodiversity worldwide (Drake et al. 1989; Allen and Flecker 1993; Dudgeon et al. 2005). Some of the first hypotheses proposed to explain global patterns of amphibian declines included the effects of non-native species (Barinaga 1990; Blaustein and Wake 1990;...
Genetic variation reveals influence of landscape connectivity on population dynamics and resiliency of western trout in disturbance-prone habitats
Helen M. Neville, Robert E. Gresswell, Jason B. Dunham
2012, Technical Report RMRS-GTR-290
Salmonid fishes have evolved and persisted in dynamic ecosystems where disturbance events vary in frequency, magnitude, timing, and duration, as well as the specific nature of associated effects (e.g., changes in thermal or flow regimes, geomorphology, or water chemistry). In the western United States, one of the major drivers of...
