Sampling issues affecting accuracy of likelihood-based classification using genetical data
B. Guinand, K.T. Scribner, A. Topchy, K.S. Page, W. Punch, M. K. Burnham-Curtis
2004, Environmental Biology of Fishes (69) 245-259
We demonstrate the effectiveness of a genetic algorithm for discovering multi-locus combinations that provide accurate individual assignment decisions and estimates of mixture composition based on likelihood classification. Using simulated data representing different levels of inter-population differentiation (Fst ~ 0.01 and 0.10), genetic diversities (four or eight alleles per locus), and...
Evaluating remedial alternatives for the Alamosa River and Wightman Fork, near Summitville Mine, Colorado: Application of a reactive transport model to low- and high-flow simulations
J.W. Ball, R.L. Runkel, D. Kirk Nordstrom
2004, Book chapter, Environmental sciences and environmental computing
Reactive-transport processes in Wightman Fork and the Alamosa River downstream from the SummitvilleMine, south-central Colorado, were simulated at low and high flow using the OTEQ reactive-transport model.The simulations were calibrated using data from synoptic studies conducted during October 1998 and June1999. Discharge over the 30-km reach from just below the...
Seismic history of the Middle America subduction zone along El Salvador, Guatemala, and Chiapas, Mexico: 1526–2000
Randall A. White, Juan Pablo Ligorria, I.L. Cifuentes
William I. Rose, Julian J. Bommer, Dina L. Lopez, Michael J. Carr, Jon J. Major, editor(s)
2004, Book chapter, Natural hazards in El Salvador
We present a catalog of subduction zone earthquakes along the Pacific coast from central El Salvador to eastern Chiapas, Mexico, from 1526 to 2000. We estimate that the catalog is complete since 1690 for MS ≥7.4 thrust events and M ≥ 7.4 normal-faulting events within the upper 60 km of the...
Using geochemical data and aquifer simulation to characterize recharge and groundwater flow in the Middle Rio Grande Basin, New Mexico
Niel Plummer, Ward E. Sanford, Laura M. Bexfield, Scott K. Anderholm, Eurybiades Busenberg
James F. Hogan, Fred M. Phillips, Bridget R. Scanlon, editor(s)
2004, Book chapter, Groundwater recharge in a desert environment: The southwestern United States
No abstract available. ...
Selenium loading through the Blackfoot River watershed--linking sources to ecosystem
Theresa S. Presser, Matthew Hardy, Mark Huebner, Paul J. Lamothe
James R. Hein, editor(s)
2004, Book chapter, Handbook of exploration and environmental geochemistry
The upper Blackfoot River watershed in southeast Idaho receives drainage from 11 of 16 phosphate mines that have extracted ore from the Phosphoria Formation, three of which are presently active. Toxic effects from selenium (Se), including death of livestock and deformity in aquatic birds, were documented locally in areas...
Ground-nesting marine birds and potential for human disturbance in Glacier Bay National Park
Mayumi L. Arimitsu, Marc D. Romano, John F. Piatt
John F. Piatt, S.M. Gende, editor(s)
2004, Conference Paper, Proceedings of the Fourth Glacier Bay Science Symposium
Glacier Bay National Park and Preserve contains a diverse assemblage of marine birds that use the area for nesting, foraging and molting. The abundance and diversity of marine bird species in Glacier Bay is unmatched in the region, due in part to the geomorphic and successional characteristics that result in...
Designing monitoring programs in an adaptive management context for regional multiple species conservation plans
A.J. Atkinson, P.C. Trenham, Robert N. Fisher, S.A. Hathaway, B.S. Johnson, S.G. Torres, Y.C. Moore
2004, Report
Increasing numbers of regional, multiple species conservation plans have been developed in California since the early 1990s. However, building effective monitoring and adaptive management programs to support these plans has remained a challenge. In addition to collecting data on the status of resources and the results of management actions, monitoring...
Monograph for using paleoflood data in Water Resources Applications
R.E. Swain, R.D. Jarrett
2004, Conference Paper, Joint Conference on Water Resource Engineering and Water Resources Planning and Management 2000: Building Partnerships
The Environmental and Water Resources Institute (EWRI) Technical Committee on Surface Water Hydrology is sponsoring a Task Committee on Paleoflood Hydrology to prepare a monograph entitled, "Use of Paleoflood and Historical Data in Water Resources Applications." This paper introduces the subject of paleoflood hydrology and discusses the topics, which are...
A comparison of three methods for assessing raptor diet during the breeding season
S.B. Lewis, Mark R. Fuller, K. Titus
2004, Wildlife Society Bulletin (32) 373-385
Video recording of prey deliveries to nests is a new technique for collecting data on raptor diet, but no thorough comparison of results from traditional methods based on collections of prey remains and pellets has been undertaken. We compared data from these 3 methods to determine relative merits of different...
Flood hydrology for Dry Creek, Lake County, Northwestern Montana
C. Parrett, R.D. Jarrett
2004, Conference Paper, Joint Conference on Water Resource Engineering and Water Resources Planning and Management 2000: Building Partnerships
Dry Creek drains about 22.6 square kilometers of rugged mountainous terrain upstream from Tabor Dam in the Mission Range near St. Ignatius, Montana. Because of uncertainty about plausible peak discharges and concerns regarding the ability of the Tabor Dam spillway to safely convey these discharges, the flood hydrology for Dry...
Modeling the Death Valley regional ground-water flow system
F. A. D’Agnese, C.C. Faunt, M. C. Hill
2004, Conference Paper, Joint Conference on Water Resource Engineering and Water Resources Planning and Management 2000: Building Partnerships
The development of a regional ground-water flow model of the Death Valley region in the southwestern United States is discussed in the context of the fourteen guidelines of Hill. This application of the guidelines demonstrates how they may be used for model calibration and evaluation, and to direct further model...
Ecosystem restoration on the California Channel Islands
W. L. Halvorson
2004, Conference Paper, International Journal of Ecology and Environmental Sciences
Restoration of natural habitat has become increasingly important over the last three decades in the United States, first as mitigation for development (especially in wetlands), and more recently in natural areas. This latter restoration has come about as land managing agencies have seen the need to reverse the impact of...
Isolation and characterization of a rhabdovirus from starry flounder (Platichthys stellatus) collected from the northern portion of Puget Sound, Washington, USA
Christina Mork, Paul K. Hershberger, Richard Kocan, William N. Batts, James R. Winton
2004, Journal of General Virology (85) 495-505
The initial characterization of a rhabdovirus isolated from a single, asymptomatic starry flounder (Platichthys stellatus) collected during a viral survey of marine fishes from the northern portion of Puget Sound, Washington, USA, is reported. Virions were bullet-shaped and approximately 100 nm long and 50 nm wide, contained a lipid envelope,...
WTAQ - A computer program for aquifer-test analysis of confined and unconfined aquifers
P. M. Barlow, A.F. Moench
2004, Conference Paper, Joint Conference on Water Resource Engineering and Water Resources Planning and Management 2000: Building Partnerships
Computer program WTAQ was developed to implement a Laplace-transform analytical solution for axial-symmetric flow to a partially penetrating, finite-diameter well in a homogeneous and anisotropic unconfined (water-table) aquifer. The solution accounts for wellbore storage and skin effects at the pumped well, delayed response at an observation well, and delayed or...
Perspective on eastern migration studies: Stopover ecology of migratory landbirds in the Gulf Coast region
W.C. Barrow Jr., L.A. Johnson Randall
2004, Book chapter, Migration stopover ecology of western avian populations: A southwestern migration workshop (Open-File Report 2004-1452)
Millions of Nearctic-Neotropical landbirds move through the coastal habitats of the Gulf of Mexico each spring and autumn as they migrate across and around the Gulf. Migration routes in the Gulf region are not static and they shift year to year and season to season according to prevailing wind patterns....
Differential spring migration by male and female Western Sandpipers at interior and coastal stopover sites
Mary Anne Bishop, Nils Warnock, John Y. Takekawa
2004, Ardea (92) 185-196
Western Sandpipers Calidris mauri are differential migrants on their non-breeding areas, with females wintering farther south. Earlier passage of males in the spring has been explained by sexual differences in winter latitude (male-biased sex ratios at more northerly areas) and onset of migration (males departing earlier). We investigated sex differences...
Hazard assessment of a simulated oil spill on intertidal areas of the St. Lawrence River with SPMD-TOX
B. Thomas Johnson, J. D. Petty, J.N. Huckins, Kenneth Lee, J. Gauthier
2004, Environmental Toxicology (19) 329-335
Phytoremediation in a simulated crude oil spill was studied with a “minimalistic” approach. The SPMD-TOX paradigm—a miniature passive sorptive device to collect and concentrate chemicals and microscale tests to detect toxicity—was used to monitor over time the bioavailability and potential toxicity of an oil spill. A simulated crude oil spill...
Fishing for lobsters indirectly increases epidemics in sea urchins
Kevin D. Lafferty
2004, Ecological Applications (14) 1566-1573
Two ecological paradigms, the trophic cascade and the host-density threshold in disease, interact in the kelp-forest ecosystem to structure the community. To investigate what happens when a trophic cascade pushes a host population over a host-threshold density, I analyzed a 20-year data set of kelp forest communities at 16 sites...
Prediction of nonlinear soil effects
S. Hartzell, L.F. Bonilla, R. A. Williams
2004, Bulletin of the Seismological Society of America (94) 1609-1629
Mathematical models of soil nonlinearity in common use and recently developed nonlinear codes compared to investigate the range of their predictions. We consider equivalent linear formulations with and without frequency-dependent moduli and damping ratios and nonlinear formulations for total and effective stress. Average velocity profiles to 150 m depth with...
Estimating site occupancy and species detection probability parameters for terrestrial salamanders
L.L. Bailey, T.R. Simons, K. H. Pollock
2004, Ecological Applications (14) 692-702
Recent, worldwide amphibian declines have highlighted a need for more extensive and rigorous monitoring programs to document species occurrence and detect population change. Abundance estimation methods, such as mark-recapture, are often expensive and impractical for large-scale or long-term amphibian monitoring. We apply a new method to estimate proportion of area...
Modeling the population dynamics of Culex quinquefasciatus (Diptera: Culcidae), along an elevational gradient in Hawaii
Jorge A. Ahumada, Dennis LaPointe, Michael D. Samuel
2004, Journal of Medical Entomology (41) 1157-1170
We present a population model to understand the effects of temperature and rainfall on the population dynamics of the southern house mosquito, Culex quinquefasciatus Say, along an elevational gradient in Hawaii. We use a novel approach to model the effects of temperature on population growth by dynamically incorporating developmental rate into the...
Littoral Assessment of Mine Burial Signatures (LAMBS) buried land mine/background spectral signature analyses
A.C. Kenton, D.M. Geci, K.J. Ray, C.M. Thomas, J.W. Salisbury, J.C. Mars, J.K. Crowley, N.H. Witherspoon, J.H. Holloway Jr.
J.H. Harmon R.S.Broach J.T.Holloway, editor(s)
2004, Conference Paper, Proceedings of SPIE - The International Society for Optical Engineering
The objective of the Office of Naval Research (ONR) Rapid Overt Reconnaissance (ROR) program and the Airborne Littoral Reconnaissance Technologies (ALRT) project's LAMBS effort is to determine if electro-optical spectral discriminants exist that are useful for the detection of land mines in littoral regions. Statistically significant buried mine overburden and...
Temporal and spatial estimates of adult striped bass mortality from telemetry and transmitter return data
S.P. Young, J. Jeffery Isely
2004, North American Journal of Fisheries Management (24) 1112-1119
Estimates of total mortality, fishing mortality, and natural mortality in the fishery for the adult striped bass Morone saxatilis in J. Strom Thurmond Reservoir, South Carolina-Georgia, were determined from long-term radiotelemetry data and high-reward radio transmitter return data using catch curve analyses. Annual total mortality rates were 0.81 ?? 0.06...
Lake Powell management alternatives and values: CVM estimates of recreation benefits
A. J. Douglas, D.A. Harpman
2004, Water International (29) 375-383
This paper presents data analyses based on information gathered from a recreation survey distributed during the spring of 1997 at Lake Powell. Recreation-linked management issues are the foci of the survey and this discussion. Survey responses to contingent valuation method (CVM) queries included in the questionnaire quantify visitor recreation values....
Evaluation of land performance in Senegal using multi-temporal NDVI and rainfall series
Ji Li, J. Lewis, James Rowland, G. Tappan, L.L. Tieszen
2004, Journal of Arid Environments (59) 463-480
Time series of rainfall data and normalized difference vegetation index (NDVI) were used to evaluate land cover performance in Senegal, Africa, for the period 1982–1997, including analysis of woodland/forest, agriculture, savanna, and steppe land cover types. A strong relationship exists between annual rainfall and season-integrated NDVI for all of Senegal...
