Waterfowl and wetlands management in the coastal zone of the Atlantic Flyway: Meeting and summary comments
R.M. Erwin
1986, Colonial Waterbirds (9) 243-245
A conference on waterfowl and wetlands along the Atlantic coast of North America was held in Wilmington, Delaware in September 1986. Discussions centered around coastal impoundments and Open Marsh Water Management as methods of mosquito control and waterfowl enhancement. Single purpose management of coastal marshes, whether for mosquito...
Potential impacts of agricultural chemicals on waterfowl and other wildlife inhabiting prairie wetlands: An evaluation of research needs and approaches
C.E. Grue, L.R. DeWeese, P. Mineau, G.A. Swanson, J.R. Foster, P.M. Arnold, J.N. Huckins, P.J. Sheenan, W.K. Marshall, A.P. Ludden
1986, Transactions of the North American Wildlife and Natural Resources Conference (51) 357-383
The potential for agricultural chemicals to enter prairie-pothole wetlands and impact wildlife dependent on these wetlands for survival and reproduction appears to be great. However, the actual risk to wetland wildlife from the inputs of these chemicals cannot be adequately assessed at this time, because of insufficient data. Available data...
The use of natural vs. man-modified wetlands by shorebirds and waterbirds
R. Michael Erwin, Malcolm Coulter, H. Cogswell
1986, Colonial Waterbirds (9) 137-138
The loss of wetlands continues world-wide. The impact especially has been felt in coastal areas, but water management elsewhere has resulted in marked reductions of aquatic bird populations. Concern for wetland management led to the convocation of a symposium on waterbird and shorebird use of natural and man-modified...
Hatching success of Caspian terns nesting in the lower Laguna Madre, Texas, USA
C. A. Mitchell, T. W. Custer
1986, Colonial Waterbirds (9) 86-89
The average clutch size of Caspian Terns nesting in a colony in the Lower Laguna Madre near Laguna Vista, Texas, USA in 1984 was 1.9 eggs per nest. Using the Mayfield method for calculating success, one egg hatched in 84.1% of the nests and 69.8% of the eggs laid hatched....
Effects of body weight and age on the time and pairing of American black ducks
Gary R. Hepp
1986, The Auk (103) 477-484
I used captive young and adult American Black Ducks (Anas rubripes) during October-February 1984-1985 to test whether body weight and age affected time of pair-bond formation. Eighty ducks were marked individually, and 10 ducks (6 males and 4 females, half of each age class) were assigned to each of 8...
Mercury, cadmium, lead, and selenium in three waterbird species nesting in Galveston Bay, Texas, USA
Kirk A. King, E. Cromartie
1986, Colonial Waterbirds (9) 90-94
Heavy metal and selenium concentrations were determined in Olivaceous Cormorants (Phalacrocorax olivaceus ), Laughing gulls (Larus atricilla ), and Black Skimmers (Rynchops niger ) nesting in Galveston Bay, Texas, during 1980-81. Lead was detected at low levels in a small proportion of the liver samples. Mercury was present...
Mid-winter food use and body weights of mallards and wood ducks in Mississippi
Don Delnicki, K. J. Reinecke
1986, Journal of Wildlife Management (50) 43-51
We obtained esophageal food samples from 311 mallards (Anas platyrhynchos) and 94 wood ducks (Aix sponsa) and body weights from 2,118 mallards and 315 wood ducks in western Mississippi during December and January 1979-83. On average, mallards ingested 3.0% animal food, principally aquatic invertebrates, and 97.0% plant food. Rice, soybeans,...
Effects of environmental contaminants on snapping turtles of a tidal wetland
P.H. Albers, L. Sileo, B.M. Mulhern
1986, Archives of Environmental Contamination and Toxicology (15) 39-49
Snapping turtles (Chelydra serpentina) were collected from a brackish-water and a nearly freshwater area in the contaminated Hackensack Meadowlands of New Jersey and an uncontaminated freshwater area in Maryland to determine the effects of environmental contaminants on a resident wetland species. No turtles were observed or caught in the Meadowlands...
Nesting of the masked booby on the Dry Tortugas, Florida: The first record for the contiguous United States
R. B. Clapp, W.R. Robertson Jr.
1986, Colonial Waterbirds (9) 113-116
In both 1984 and 1985 Masked Boobies (Sula dactylatra) attempted to nest on sandy islets at the Dry Tortugas, Florida. Nesting attempts failed because the nest sites were washed away by summer storms. It seems likely that this species will eventually nest there successfully and will establish a small breeding...
Range extension for the gray-backed tern in the western Pacific
R. B. Clapp, J.J. Hatch
1986, Colonial Waterbirds (9) 110-112
About 75 pairs of Gray-backed Terns (Sterna lunata) nested on Guguan in the Northern Mariana Islands in 1979. This locality represents a breeding range extension of about 2000 km to the west of the westernmost previously known colony. The species is also reported for the first time from Uracas, northernmost...
A summary of alcid records from Hawaii
R. B. Clapp
1986, Colonial Waterbirds (9) 104-107
Abstract.-Four species of alcids have now been recorded frorn Hawaii. Two of them, the Tufted Puffin (Fratercula cirrhata and the Cassin's Auklet (Ptychoramchus aleuticus) have been found only once; the occurrence of the latter is reported here for the first time. two other alcids, the Horned Puffin (Fratercula arctica) and...
Demography, environmental uncertainty, and the evolution of mate desertion in the snail kite
Steven Beissinger
1986, Ecology (67) 1445-1459
The Snail Kite (Rostrhamus sociabilis), an endangered hawk, has a unique mating system in Florida (Beissinger and Snyder 1987): when food is abundant, males or females desert their mates at nearly equal frequency (ambisexual mate desertion) in the midst of a nesting cycle. I examined the demographic and environmental constraints...
Embryonic mortality and abnormalities of aquatic birds: Apparent impacts of selenium from irrigation drainwater
H. M. Ohlendorf, D. J. Hoffman, M. K. Saiki, Thomas W. Aldrich
1986, Science of the Total Environment (52) 49-63
Severe reproductive impacts were found in aquatic birds nesting on irrigation drainwater ponds in the San Joaquin Valley of California. Of 347 nests studied to late incubation or to hatching, 40.6% had at least one dead embryo and 19.6% had at least one embryo or chick with an obvious external...
Association between PCBs and lower embryonic weight in black-crowned night herons in San Francisco Bay
D. J. Hoffman, Barnett A. Rattner, C.M. Bunck, A. J. Krynitsky, H. M. Ohlendorf, Roy W. Lowe
1986, Journal of Toxicology and Environmental Health (19) 383-391
Reproductive problems, including congenital malformations, reduced hatching success, and decreased survival of hatchlings, have been observed in colonial-nesting water birds at the San Francisco Bay National Wildlife Refuge (SFBNWR). Twenty-four black-crowned night heron (Nycticorax nycticorax) eggs were collected from SFBNWR in 1983. Twelve of these were collected...
Forested wetlands of the Southeast: Review of major characteristics and role in maintaining water quality
Parley V. Winger
1986, Resource Publication 163
Forested wetlands occupying floodplains of major rivers in the Southeast are highly productive and diverse ecological systems. The wetlands are produced and maintained by fluvial processes and unique hydrologic regimes consisting of periodic flooding and subsequent drydown. Fluctuations in soil chemistry and biology resulting from this flooding and...
The Breeding Bird Survey: Its first fifteen years, 1965-1979
C.S. Robbins, D. Bystrak, P.H. Geissler
1986, Resource Publication 157
The Breeding Bird Survey (BBS) is an ongoing cooperative program sponsored jointly by the U.S. Fish and Wildife Service and the Canadian Wildlife Service. Its main purpose is to estimate population trends of the many species of birds that nest in North America north of Mexico and that migrate across...
Blood protoporphyrin for detecting lead exposure in canvasbacks
J. Christian Franson, G. Michael Haramis, Matthew C. Perry, John F. Moore
J.Scott Feierabend, A.Brooke Russell, editor(s)
1986, Conference Paper, Lead Poisoning in Wild Waterfowl--A Workshop.
No abstract available....
Immunosuppressive effects of lead
J. Christian Franson
J.Scott Feierabend, A.Brooke Russell, editor(s)
1986, Book chapter, Lead poisoning in wild waterfowl - A workshop
Immunosuppressive effects of lead were reported as early as 1966, when it was noted that lead increased the sensitivity of rats to bacterial endotoxins (Selye et al. 1966). Since then a substantial body of literature has demonstrated adverse effects of lead on the immune system in a variety of laboratory...
Wisconsin, a summary of water-resources activities of the United States Department of the Interior Geological Survey 1986
Water Resources Division, U.S. Geological Survey
1986, Report
Carbonate apron models: Alternatives to the submarine fan model for paleoenvironmental analysis and hydrocarbon exploration
H.T. Mullins, H. E. Cook
1986, Sedimentary Geology (48) 37-79
Sediment gravity flow deposition along the deep-water flanks of carbonate platforms typically does not produce submarine fans. Rather, wedge-shaped carbonate aprons develop parallel to the adjacent shelf/slope break. The major difference between submarine fans and carbonate aprons is a point source with channelized sedimentation on fans, versus a line source...
Trace metal seasonal variations in Texas marine sediments
C. W. Holmes
1986, Marine Chemistry (20) 13-27
Trace elements in coastal environments are derived from three major sources: (1) the bordering watershed; (2) the offshore marine environment; and (3) industrial and/or urban effluent. The site of deposition, however, is controlled by physical and chemical processes in the coastal zone. In many cases, these processes are controlled by...
Groundwater flow into Lake Michigan from Wisconsin
D.S. Cherkauer, B.R. Hensel
1986, Journal of Hydrology (84) 261-271
Detailed hydrogeological study has been done at six sites along the Lake Michigan shoreline in Wisconsin. At each site a flux of groundwater to the lake has been calculated for both natural conditions and the existing conditions created by pumping. The values from each site have then been extrapolated to...
A comparison of the coupled fresh water-salt water flow and the Ghyben-Herzberg sharp interface approaches to modeling of transient behavior in coastal aquifer systems
H.I. Essaid
1986, Journal of Hydrology (86) 169-193
A quasi-three dimensional finite difference model which simulates coupled, fresh water and salt water flow, separated by a sharp interface, is used to investigate the effects of storage characteristics, transmissivity, boundary conditions and anisotropy on the transient responses of such flow systems. The magnitude and duration of the departure of...
Limnological characteristics of selected lakes in the Nebraska sandhills, U.S.A., and their relation to chemical characteristics of adjacent ground water
J.W. La Baugh
1986, Journal of Hydrology (86) 279-298
Limnological characteristics of Crane, Hackberry, Island and Roundup Lakes, and chemical characteristics of shallow ground water, within the Crescent Lake National Wildlife Refuge, western Nebraska, were determined during a preliminary investigation of the interaction between lakes and ground water in this study area between 1980 and 1984. When ice cover...
Use of the chloride ion in determining hydrologic-basin water budgets - A 3-year case study in the San Juan Mountains, Colorado, U.S.A.
H.C. Claassen, M.M. Reddy, D.R. Halm
1986, Journal of Hydrology (85) 49-71
Measurement of chloride concentration and water equivalent in precipitation and recharge at a site can be extrapolated to determine available moisture in a nearby basin. This method also may be extrapolated to a basin with similar climatic characteristics if precipitation, vegetation, and topographic data are available. The average accuracy of...
