The past, present, and future of manatees in the southeastern United States: realities, misunderstandings and enigmas
T. J. O'Shea
1988, Book, Proceedings of the Third Southeastern Nongame and Endangered Wildlife Symposium
A review of the historical and recent (1970s-1980s) literature on the distribution, abundance, and mortality of West Indian manatees (Trichechus manatus) in the southern United States is presented. Recent unpublished data on mortality, Florida boat registrations, size of certain manatee wintering populations, and records outside of Florida are also given....
Patterns of relative diversity within riparian small mammal communities, Platte River Watershed, Colorado
T.E. Olson, Fritz L. Knopf
1988, Report, Management of amphibians, reptiles, and small mammals in North America: Proceedings of the symposium
Relative diversity within and between small mammal assemblages of riparian and upland vegetation was evaluated at 6 study areas across an elevational gradient. In contrast to avian diversity analyses conducted at the same sites, species richness, relative diversity, and faunal similarity of small mammals were greater among upland rather than...
Trace contaminants in streams
James S. Kuwabara, P. Helliker
Paul N. Cheremisinoff, editor(s)
1988, Book chapter, Civil engineering practice: Water resources/environmental
No abstract available....
Ducks Get Sick Too!
Ronald M. Windingstad, Cynthia J. Laitman
1988, Report
When it comes to getting sick, wild waterfowl—which include ducks, geese, and swans—are a lot like people. We are all vulnerable to a wide variety of diseases.Some diseases that affect waterfowl, such as avian botulism, have been recognized for many decades as a major cause of death. Others, such as...
Changes in the morphometry of Las Vegas Wash and the impact on water quality
Richard A. Roline, James J. Sartoris
1988, Lake and Reservoir Management (4) 135-142
Las Vegas Wash, a natural wash east of Las Vegas, Nevada, carries stormwater, groundwater drainage, and sewage effluent from two sewage treatment plants to Lake Mean. Over 80 percent of the normal discharge of approximately 3.4 m3/s (120 ft3/s) consists of effluent from the City of Las Vegas and...
Estimation of ground-water use for irrigation in eastern Washington using Landsat imagery
Peter C. Van Metre, P. M. Seevers
1988, Conference Paper, Proceedings of the Symposium on Water-Use Data for Water Resources Management
No abstract available....
Use of "specific" inhibitors in biogeochemistry and microbial ecology
Ronald S. Oremland, D.G. Capone
1988, Book chapter, Advances in microbial ecology
The above statement, although meant to be tongue in cheek, contains an essential truism: all work with inhibitors is inherently suspect. This fact has been known by biochemists for some time. However, use of chemical inhibitors of enzymic systems and membranes continues to be a common approach taken toward unraveling...
Determinants of breeding distributions of ducks
Douglas H. Johnson, J.W. Grier
1988, Wildlife Monographs (100)
The settling of breeding habitat by migratory waterfowl is a topic of both theoretical and practical interest. We use the results of surveys conducted annually during 1955-81 in major breeding areas to examine the factors that affect the distributions of 10 common North American duck species. Three patterns of settling...
Predation, herbivory and kelp evolution
J. A. Estes, P.D. Steinberg
1988, Paleobiology (14) 19-36
We propose that the kelps (Laminariales) radiated in the North Pacific following the onset of late Cenozoic polar cooling. The evidence is that (1) extant kelps occur exclusively in cold-water habitats; (2) all but one of 27 kelp genera occur in the North Pacific, 19 of these exclusively; and (3)...
American wild celery (Vallisneria americana): Ecological considerations for restoration
C. E. Korschgen, W. L. Green
1988, Technical Report 19
The success of vegetation management programs for waterfowl is dependent on knowing the physical and physiological requirements of target species. Lakes and riverine impoundments that contain an abundance of the American wildcelery (Vallisneria americana ) have traditionally been favored by canvasbacks (Aythya valisineria ) and other waterfowl...
Applications of a simulation model to decisions in mallard management
L.M. Cowardin, Douglas H. Johnson, T.L. Shaffer, D. W. Sparling
1988, Fish and Wildlife Technical Report 17
A system comprising simulation models and data bases for habitat availability and nest success rates was used to predict results from a mallard (Anas platyrhynchos) management plan and to compare six management methods with a control. Individual treatments in the applications included land purchase for waterfowl production, wetland easement purchase,...
Increasing waterfowl production on points and islands by reducing mammalian predation
J. T. Lokemoen, R.W. Schnaderbeck, R.O. Woodward
1988, General Technical Report RM-154
The Detroit River, Michigan: an ecological profile
Bruce A. Manny, Thomas A. Edsall, Eugene Jaworski
1988, Biological Report 85(7.17)
A part of the connecting channel system between Lake Huron and Lake Erie, the Detroit River forms an integral link between the two lakes for both humans and biological resources such as fish, nutrients, and plant detritus. This profile summarizes existing scientific information on the ecological structure and functioning...
The St. Clair River and Lake St. Clair, Michigan: an ecological profile
Thomas A. Edsall, Bruce A. Manny, Nicholas Raphael
1988, Biological Report 85(7.3)
The St. Clair River and Lake St. Clair form a part of the connecting channel system between Lake Huron and Lake Erie. This report synthesizes existing information on the ecological structure and function of this ecosystem. Chapters include descriptions of climatology, hydrology, and geology of the region; biological...
Fixed-wing airplane versus helicopter surveys of manatees (Trichechus manatus)
Galen B. Rathbun
1988, Marine Mammal Science (4) 71-75
The abundance of manatees, as with most marine mammals, is difficult to determine because they are visible for only short periods of time while at the surface of the water (Eberhardt et al. 1979, Powell et al. 1981). Aerial surveys are generally considered to be the most accurate method of...
U.S. Fish & Wildlife Service continues pintail and white-fronted goose telemetry studies in California
M. R. Miller, John Y. Takekawa, J. Fleskes, D. Orthmeyer
1988, California Waterfowl 50
No abstract available at this time...
Selenium levels in biota from irrigation drainwater impoundments in the San Joaquin Valley, California
D. A. Barnum, D.S. Gilmer
1988, Lake and Reservoir Management (4) 181-186
Waterfowl, fish, invertebrates, and plants were collected from impoundments used for evaporating subsurface irrigation drainwater in Kings and Kern counties, California. Specimens were analyzed for trace elements with emphasis on selenium. Dry weight concentrations of total selenium ranged from 2.5 to 17 μg/g in wigeongrass, Ruppia maritima; 7.6 to 30...
Motor-operated valve for fish culturists
J. T. Fuss
1988, Progressive Fish-Culturist (50) 121-124
Many fish culture systems require motoroperated valves to regulate water flow. The expense of commercial units can be prohibitive but, by using inexpensive components and a little assembly time, a manual valve can be motorized for a fraction of the cost....
Chronic toxicity of tributyltin to Chesapeak Bay biota
L. W. Hall Jr., S. J. Bushong, M.C. Ziegenfuss, W.E. Johnson, R. L. Herman, D.A. Wright
1988, Water, Air, & Soil Pollution (39) 365-376
Concurrent mobile on-site and in situ striped bass contaminant and water quality studies in the Choptank River and upper Chesapeake Bay
L. W. Hall Jr., S. J. Bushong, M.C. Ziegenfuss, W. S. Hall, R. L. Herman
1988, Environmental Toxicology and Chemistry (7) 815-830
In situ and mobile on-site striped bass prolarval and yearling survival studies were conducted in the Choptank River and in the Chesapeake and Delaware (C & D) Canal area of the Upper Chesapeake Bay. Extensive chemical analyses of both organic and inorganic contaminants in the habitat water were performed and water...
Water quality testing: what to test for and when
B.R. Griffin, A.J. Mitchell
1988, Aquaculture Magazine (14) 63-64
Effects of cage encrustation by the bryozoan Plumatella casmiana on production of channel catfish
Donald C. Greenland, S.H. Newton, R.F. Faucette Jr.
1988, Progressive Fish-Culturist (50) 42-45
Fouling by the bryozoan Plumatella casmiana was observed on cages in which channel catfish (Ictalurus punctatus) were being reared for a strain evaluation study at the Fish Farming Experimental Station, Stuttgart, Arkansas. Channel catfish growth was inversely correlated with encrustation. The extent of the encrustation was inversely related to pond water depth...
Lack of dietary effects on the timing of smoltification in Atlantic salmon
Lori A. Redell, D. V. Rottiers, C. A. Lemm
1988, Progressive Fish-Culturist (50) 7-11
Six commercially available diets varying in lipid, protein, water, ash, and carbohydrate contents were fed to Atlantic salmon (Salmo salar) for 2 years to determine if diet affected smoltification. Each month, from March to September of the second year, sampled fish were exposed to 33‰ seawater for 24 h to...
High-performance liquid-chromatographic separation of subcomponents of antimycin-A
S. L. Abidi
1988, Journal of Chromatography (447) 65-79
Using a reversed-phase high-performance liquid chromatographic (HPLC) technique, a mixture of antimycins A was separated into eight hitherto unreported subcomponents, A1a, A1b, A2a, A2b, A3a, A3b, A4a, and A4b. Although a base-line resolution of the known four major antimycins A1, A2, A3, and A4 was readily achieved with mobile phases containing...
High calcium concentration in water increases mortality of salmon and trout eggs
H. G. Ketola, D. Longacre, A. Greulich, L. Phetterplace, R. Lashomb
1988, Progressive Fish-Culturist (50) 129-135
Several experiments were conducted to investigate the effect of water chemistry during water hardening on survival of eggs of Atlantic salmon (Salmo salar), rainbow trout (Salmo gairdneri), and. brook trout (Salvelinus fontinalis). Results of these experiments showed that survival was very low when eggs were exposed to very hard water...
