Juvenile Marbled Murrelet nurseries and the productivity index
Kathy J. Kuletz, John F. Piatt
1999, The Wilson Bulletin (111) 257-261
Late summer counts of juveniles at sea are used as an index of Marbled Murrelet (Brachyramphus marmoratus) reproductive success, but little is known about juvenile dispersal or habitat use. Further, it is not known whether these counts accurately reflect absolute breeding success. To address these questions we conducted five boat...
A new multistage groundwater transport inverse method: presentation, evaluation, and implications
Evan R. Anderman, Mary C. Hill
1999, Water Resources Research (35) 1053-1063
More computationally efficient methods of using concentration data are needed to estimate groundwater flow and transport parameters. This work introduces and evaluates a three‐stage nonlinear‐regression‐based iterative procedure in which trial advective‐front locations link decoupled flow and transport models. Method accuracy and efficiency are evaluated by comparing results to those obtained...
Use and misuse of the chloride-mas balance method in estimating ground water recharge
Warren W. Wood
1999, Groundwater (37) 2-3
No abstract available....
Satellite radar interferometry and its application to detection of volcanic deformation
Zhong Lu
1999, Remote Sensing Information (53) 18-23
No abstract available....
Modelling removal mechanisms of Pb, Cu, Zn and Cd in acidic groundwater during the neutralization by ambient surface and ground waters
Anthony J. Paulson, Laurie S. Balistrieri
1999, Environmental Science & Technology (33) 3850-3856
Removal of Pb, Cu, Zn, and Cd during neutralization of acid rock drainage is examined using model simulations of field conditions and laboratory experiments involving mixing of natural drainage and surface waters or groundwaters. The simulations consider sorption onto hydrous Fe and Al oxides and particulate organic carbon, mineral precipitation,...
Proceedings of the Rocky Mountain/Great Basin regional climate-change workshop
Frederic H. Wagner, Jill Baron
1999, Book
No abstract available....
Stream restoration at Denali National Park and Preserve
Roseann V. Densmore, Kenneth F. Karle
1999, Conference Paper, Proceedings: High altitude revegetation workshop No. 13; Information series no. 89
Placer mining for gold has severely disturbed many riparian ecosystems in northern regions. We are conducting a long-term project to test methods to promote restoration of a placer-mined watershed in Denali National Park and Preserve. The project included hydrological restoration of the unstable and excessively confined stream with heavy equipment....
Modeling data from double-tagging experiments to estimate heterogeneous rates of tag shedding in lake trout (Salvelinus namaycush)
Mary C. Fabrizio, James D. Nichols, James E. Hines, Bruce L. Swanson, Stephen T. Schram
1999, Canadian Journal of Fisheries and Aquatic Sciences (56) 1409-1419
Data from mark-recapture studies are used to estimate population rates such as exploitation, survival, and growth. Many of these applications assume negligible tag loss, so tag shedding can be a significant problem. Various tag shedding models have been developed for use with data from double-tagging experiments, including models...
Xenobiotic-induced apoptosis: significance and potential application as a general biomarker of response
Leonard I. Sweet, Dora R. Passino-Reader, Peter G. Meier, Geneva M. Omann
1999, Biomarkers (4) 237-253
The process of apoptosis, often coined programmed cell death, involves cell injury induced by a variety of stimuli including xenobiotics and is morphologically, biochemically, and physiologically distinct from necrosis. Apoptotic death is characterized by cellular changes such as cytoplasm shrinkage, chromatin condensation, and plasma membrane asymmetry. This form of cell...
Preserving ground water samples with hydrochloric acid does not result in the formation of chloroform
Paul J. Squillace, James F. Pankow, Jack E. Barbash, Curtis V. Price, John S. Zogorski
1999, Groundwater Monitoring & Remediation (19) 67-74
Water samples collected for the determination of volatile organic compounds (VOCs) are often preserved with hydrochloric acid (HCl) to inhibit the biotransformation of the analytes of interest until the chemical analyses can he performed. However, it is theoretically possible that residual free chlorine in the HCl can react with dissolved...
Sediment inflow to the Sacramento-San Joaquin Delta and the San Francisco Bay
R.N. Oltmann
1999, Interagency Ecological Program Newsletter (12) 30-33
No abstract available....
Evaluation of the sulfur isotopic composition and homogeneity of the Soufre de Lacq reference material
R.W. Carmody, R.R. Seal II
1999, Chemical Geology (153) 289-295
Sulfur isotopic analysis of the elemental sulfur reference material Soufre de Lacq, prepared as silver sulfide by chromous chloride reduction and as copper sulfide by sealed-tube synthesis, indicates that Soufre de Lacq is isotopically homogeneous across different size fractions to within analytical uncertainty (??0.15???). The sulfur isotopic composition of aliquots...
Simulations of snow distribution and hydrology in a mountain basin
Melannie D. Hartman, Jill Baron, Richard B. Lammers, Donald W. Cline, Larry E. Band, Glen E. Liston, Christina L. Tague
1999, Water Resources Research (35) 1587-1603
We applied a version of the Regional Hydro-Ecologic Simulation System (RHESSys) that implements snow redistribution, elevation partitioning, and wind-driven sublimation to Loch Vale Watershed (LVWS), an alpine-subalpine Rocky Mountain catchment where snow accumulation and ablation dominate the hydrologic cycle. We compared simulated discharge to measured discharge and the simulated snow...
Co-existence of zebra mussels and freshwater unionids: Population dynamics of Leptodea fragilis in a coastal wetland infested with zebra mussels
S. Jerrine Nichols, Jon Amberg
1999, Canadian Journal of Zoology (77) 423-432
In 1996, thousands of live Leptodea fragilis were collected from a marsh located in the western basin of Lake Erie that was infested with zebra mussels (Dreissena polymorpha). Despite the presence of zebra mussels at this site for a number of years, this L. fragilis population showed no signs of competition-induced changes in population dynamics....
A list of Michigan Corixidae (Hemiptera) with four new state records from the Great Lakes of Michigan
Stephen W. Chordas III, Patrick L. Hudson
1999, Entomological News (110) 246-250
Corisella tarsalis, Sigara lineata, Trichocorixa borealis, and Trichocorixa kanza were recently identified from Michigan and constitute new state records. These four species were collected from two of the Great Lakes or their connecting rivers and increase the number of corixids for Michigan to 47 species. We newly report the genus...
Maximum-limiting ages of Lake Michigan coastal dunes: Their correlation with Holocene lake level history
Alan F. Arbogast, Walter L. Loope
1999, Journal of Great Lakes Research (25) 372-382
Coastal geomorphology along the Great Lakes has long been linked with lake-level history. Some of the most spectacular landforms along the eastern shore of Lake Michigan are high-relief dunes that mantle lake terraces. It has been assumed that these dunes developed during the Nipissing high stand of ancestral Lake...
Fault-slip distribution of the 1995 Colima-Jalisco, Mexico, earthquake
C. Mendoza, S. Hartzell
1999, Bulletin of the Seismological Society of America (89) 1338-1344
Broadband teleseismic P waves have been analyzed to recover the rupture history of the large (MS 7.4) Colima-Jalisco, Mexico, shallow interplate thrust earthquake of 9 October 1995. Ground-displacement records in the period range of 1-60 sec are inverted using a linear, finite-fault waveform inversion procedure that...
The chemical and isotopic differentiation of an epizonal magma body: Organ Needle pluton, New Mexico
P. L. Verplanck, G. L. Farmer, M. McCurry, S.A. Mertzman
1999, Journal of Petrology (40) 653-678
Major and trace element, and Nd and Sr isotopic compositions of whole rocks and mineral separates from the Oligocene, alkaline Organ Needle pluton (ONP), southern New Mexico, constrain models for the differentiation of the magma body parental to this compositionally zoned and layered epizonal intrusive body. The data reveal...
A blood chemistry profile for lake trout
Carol Cotant Edsall
1999, Journal of Aquatic Animal Health (11) 81-86
A blood chemistry profile for lake trout Salvelinus namaycush was developed by establishing baseline ranges for several clinical chemistry tests (glucose, total protein, amylase, alkaline phosphatase, alanine aminotransferase, aspartate aminotransferase, creatine kinase, calcium, and magnesium). Measurements were made accurately and rapidly with a Kodak Ektachem DT60 Analyzer and the...
Bacteriophage PRD1 and silica colloid transport and recovery in an iron oxide-coated sand aquifer
J. N. Ryan, M. Elimelech, R.A. Ard, R.W. Harvey, P.R. Johnson
1999, Environmental Science & Technology (33) 63-73
Bacteriophage PRD1 and silica colloids were co-injected into sewage-contaminated and uncontaminated zones of an iron oxide-coated sand aquifer on Cape Cod, MA, and their transport was monitored over distances up to 6 m in three arrays. After deposition, the attached PRD1 and silica colloids were mobilized by three different chemical...
Distribution of odonates (dragonflies and damselflies) in the Indiana Dunes National Lakeshore and nearby lands
George E. Smolka, Paul M. Stewart, Thomas O. Swinford
1999, Natural Areas Journal (19) 132-141
From 1993 to 1997, 60 species of Anisoptera (dragonflies) and Zygoptera (damselflies) were found in Lake and Porter Counties, Indiana, including Indiana Dunes National Lakeshore, in contrast to 34 species that were recorded historically from this region. We added 17 new species to Lake County's odonate records and 39...
Long‐term trends in stream water and precipitation chemistry at five headwater basins in the northeastern United States
David W. Clow, M. Alisa Mast
1999, Water Resources Research (35) 541-554
Stream water data from five headwater basins in the northeastern United States covering water years 1968–1996 and precipitation data from eight nearby precipitation monitoring sites covering water years 1984‐1996 were analyzed for temporal trends in chemistry using the nonparametric seasonal Kendall test. Concentrations of SO4declined at three of five streams...
Effects of sediment supply on surface textures of gravel‐bed rivers
John M. Buffington, David R. Montgomery
1999, Water Resources Research (35) 3523-3530
Using previously published data from flume studies, we test a new approach for quantifying the effects of sediment supply (i.e., bed material supply) on surface grain size of equilibrium gravel channels. Textural response to sediment supply is evaluated relative to a theoretical prediction of competent median grain size (D50′). We...
Decision analysis tools: use of the Legal-Institutional Analysis Model: Chapter 9
B. L. Lamb, N. Burkardt, D. Lybecker
1999, Book chapter, Handbook of global environmental policy and administration
No abstract available....
Movement patterns and population characteristics of the Karner blue butterfly (Lycaeides melissa samuelis) at Indiana Dunes National Lakeshore
Randy L. Knutson, John R. Kwilosz, Ralph Grundel
1999, Natural Areas Journal (19) 109-120
We conducted a three-year mark-release-recapture study of the endangered Karner blue butterfly (Lycaeides melissa samuelis Nabokov) at Indiana Dunes National Lakeshore to describe the butterfly's movement patterns and to assess seasonal changes in the Karner blue's population structure. Estimated mean Karner blue adult life span was less than 3.5 days....
