Nutritional values of waterfowl foods
Leigh H. Fredickson, Fredric A. Reid
1988, Fish and Wildlife Leaflet 13.1.1
wetland habitats throughout their annual cycles. Survival, reproduction, and growth are dependent on the availability of foods that meet nutritional requirements for recurring biological events. These requirements occur among a wide variety of environmental conditions that also influence nutritional demands. Recent work on nesting waterfowl has identified the female’s...
Relationships between silicic plutonism and volcanism: Geochemical evidence
R. Macdonald, R.L. Smith
1988, Transactions of the Royal Society of Edinburgh, Earth Sciences (79 ) 257-263
Field associations (voluminous ash flow deposits, rhyolitic stocks and dykes, ring complexes), evidence of repeated influxes of mafic magma, and thermal constraints indicate that many high-level silicic plutons (magma chambers) acted as open systems for considerable parts of their history. The long thermal lifetime, as well as other evidence from...
Pattern and process in arid-region salt marshes - Southern California
Christopher P. Onuf, Joy B. Zedler
1988, Book chapter, The ecology and management of wetlands
No abstract available....
Annual body weight change in ring-neck ducks (Aythya collaris)
William L. Hohman, T. Scott Taylor, Milton W. Weller
1988, Book chapter, Waterfowl in winter
No abstract available....
Field validation of a habitat suitability index model for the American oyster
Thomas M. Soniat, Michael S. Brody
1988, Estuaries (11) 87-95
A habitat suitability index (HSI) model, developed for the American oyster,Crassostrea virginica, along the Gulf of Mexico, was field tested on 38 0.1-ha reef and nonreef sites in Galveston Bay, Texas. The HSI depends upon six (HSI1) or, optionally, eight (HSI2) variables. The six variables are percent of...
Evaluation of the continuous seismic-reflection method for determining the thickness and lithology of stratified drift in the glaciated northeast
F.P. Haeni
1988, Book chapter, Regional aquifer systems of the United States: The northeast glacial aquifers
No abstract available....
Workshop summary: Habitat loss and its effect on waterfowl
Robert E. Stewart Jr., Gary Krapu, Bruce Conant, H. Franklin Percival, David L. Hall
1988, Conference Paper, Waterfowl in winter
No abstract available....
Habitat relationships of island nesting seabirds along Coastal Louisiana
Richard D. Greer, Carroll L. Cordes, Stanley H. Anderson
1988, Colonial Waterbirds (11) 181-188
Seabirds in the saline marsh of coastal Louisiana nest on the islands that are more isolated, smaller, have lower percentages of woody vegetation, and higher percentages of herbaceous vegetation and beach habitat. Only moderate variation in these habitat features was demonstrated among years of colonization. The factors...
Yellow-headed Blackbird nesting in Iowa: A twenty year follow-up
Mike Brown
1988, Iowa Bird Life (58) 38-38
No abstract available...
U-Th-Pb, Sm-Nd, Rb-Sr, and Lu-Hf systematics of Returned Mars Samples
M. Tatsumoto, Wayne R. Premo
1988, Conference Paper, LPI Technical Report 88-07
No abstract available....
Evaluation of greentree reservoir nanagement options in Arkansas,
James A. Allen, James T. Teaford, Edward Pendleton, M. Brody
1988, Conference Paper, Transactions of the 53rd North American wildlife and natural resources conference
No abstract available...
A geological engineering application of a knowledge-based geographic information system
E. Lynn Usery, David J. Barr, Robin R. P. Deister
1988, Conference Paper, Technical papers; 1988 ACSM-ASPRS annual convention; volume 2, cartography
No abstract available....
Effects of livestock grazing on raptors with emphasis on the southwestern U.S.
Michael N. Kochert, B.A. Millsap, K. Steenhof
1988, Conference Paper, Southwest Raptor Management Symposium and Workshop
No abstract available...
The Blake Plateau Basin and Carolina Trough
William P. Dillon, Peter Popenoe
R. E. Sheridan, John A. Grow, editor(s)
1988, Book chapter, The Atlantic Continental Margin
Presently, the continental margin of the southeastern United States (Fig. 1) forms a zone of transition between the actively building, steep-fronted carbonate platform of the Bahamas and the typical eastern North American terrigenous clastic-dominated, drowned, shelf-slope-rise configuration. This region of the continental margin is underlain by two major sedimentary basins—the...
Pb isotopic evidence for the formation of Proterozoic crust in the southwestern United States
J. L. Wooden, J. S. Stacey, Keith A. Howard, B. R. Doe, D. M. Miller
W. G. Ernst, editor(s)
1988, Book chapter, Metamorphism and crustal evolution of the western United States
No abstract available....
Metamorphic and tectonic evolution of the Franciscan Complex, northern California: Chapter 38
M. Clark Blake Jr., A. S. Jayko, R. J. McLaughlin, M.B. Underwood
1988, Book chapter, Metamorphism and crustal evolution of the western United States
No abstract available....
New and revised lithostratigraphic units from the southwestern New England Fold Belt
M. Clark Blake Jr., B. Murchey
1988, Quarterly Notes (72) 10-16
New and revised lithostratigraphic units are recognized in northern New South Wales. New lithostatigraphic units are: Cara Formation, Whitlow Formation, Bobs Creek Formation, Nangahrah Formation, and Dinoga Formation. Revision of the Woolomin beds to Woolomin Group and Woodsreef Melange is proposed....
Biochemical changes in longear sunfish, Lepomis megalotis, associated with lead, cadmium and zinc from mine tailings
F.J. Dwyer, C.J. Schmitt, S.E. Finger, P. M. Mehrle
1988, Journal of Fish Biology (33) 307-317
Longear sunfish were collected from a stream contaminated with mine tailings rich in lead (Pb), cadmium (Cd) and zinc (Zn). Blood samples were analysed for δ-aminolevulinic acid dehydratase (ALA-D) activity and Pb concentration. Vertebrae were tested for bone strength and composition, and Pb, Zn, and Cd concentrations were determined in...
Groundwater velocity magnitude in radionuclide transport calculations
Daniel J. Goode
1988, Journal of Hydraulic Engineering (114) 933-939
Analytical solutions have been developed for many conceptual models of solute transport in groundwater (Bear 1979). Although these models usually rely on assumptions too restrictive for accurate description of actual field situations, they are useful in understanding groundwater transport and in evaluating the relative importance of the subsurface processes affecting...
Ground-water influences on wetlands at Indiana Dunes, Northwest Indiana
Robert J. Shedlock, N. L. Loiacono, Thomas E. Imbrigiotta
1988, Conference Paper, Interdisciplinary approaches to freshwater wetlands research
No abstract available....
In situ control of groundwater contaminants by microbiological processes
Alfred B. Cunnningham, E.J. Bouwer, William G. Characklis
1988, Report
No abstract available....
Size differences in migrant sandpiper flocks: Ghosts in ephemeral guilds
J.L. Eldridge, Douglas H. Johnson
1988, Oecologia (77) 433-444
Scolopacid sandpipers were studied from 1980 until 1984 during spring migration in North Dakota. Common species foraging together in mixed-species flocks differed in bill length most often by 20 to 30 percent (ratios from 1.2:1 to 1.3:1). Observed flocks were compared to computer generated flocks drawn from three source pools...
A 250,000-year climatic record from Great Basin vein calcite: Implications for Milankovitch theory
Isaac J. Winograd, Tyler B. Coplen, Barney J. Szabo, Alan C. Riggs
1988, Science (242) 1275-1280
A continuous record of oxygen-18 (δ18O) variations in the continental hydrosphere during the middle-to-late Pleistocene has been obtained from a uranium-series dated calcitic vein in the southern Great Basin. The vein was deposited from ground water that moved through Devils Hole—an open fault zone at Ash Meadows, Nevada—between 50 and...
Book review of Wildlife 2000: Modeling relationships of terrestrial vertebrates, edited by J. Verner, M.L. Morrison, and C.J. Ralph
Robert J. Cooper
1988, The Wilson Bulletin (100) 697-699
"Wildlife 2000" is the proceedings of a conference held 7-11 October 1984, near Lake Tahoe, California, the objective of which was to present an up-to-date synthesis of models that predict the responses of wildlife to habitat change. This extremely attractive, well-produced volume has been well received by the wildlife...
Nonparametric statistical methods for comparing two sites based on data with multiple nondetect limits
Steven P. Millard, Steven J. Deverel
1988, Water Resources Research (24) 2087-2098
As concern over the effects of trace amounts of pollutants has increased, so has the need for statistical methods that deal appropriately with data that include values reported as “less than” the detection limit. It has become increasingly common for water quality data to include censored values that reflect more...
