Publications
These publications showcase the significant science conducted in our Science Centers.
Filter Total Items: 16795
An old record of the pearly-breasted cuckoo in North America and a nomenclature critique
No abstract available.
Authors
R.C. Banks
Evaluation of the toxicity of marine sediments and dredge spoils with the MicrotoxR bioassay
The MicrotoxR bioassay was used to evaluate the toxicity of sediment and dredge spoil elutriates from several potentially-contaminated sites in Mobile and Pascagoula Bays. Elutriates were prepared using either local seawater or distilled deionized water (osmotically adjusted with NaCl prior to testing), and MicrotoxR assays were performed with the elutriates and three reference toxicants. There
Authors
G.T. Ankley, R.A. Hoke, J. P. Giesy, P. V. Winger
Breeding biology and habitat use of black ducks
Forested wetlands are Important habitats for black ducks nesting in the Northeast. Invertebrates, with their high protein content, are primary foods of females during egg laying and for rapidly growing ducklings. Beaver-created and modified wetlands provide excellent habitat for feeding as well as protective cover. As these wetlands age, their quality declines after 7-10 years, and waterfowl use d
Authors
R. Owen, J. Longcore, J. Ringelman, K. Reinecke, K. Hendrix
Colony nest counts and recounts: What really counts?
No abstract available.
Authors
R.M. Erwin, W.C. Scharf, T. W. Custer, C. A. Mitchell
Field-testing of commercially-manufactured capture collars on white-tailed deer (Odocoileus virginianus)
No abstract available.
Authors
L. D. Mech, K. Kunkel, R. Chapman, T.J. Kreeger
Rise and fall of endrin usage in Washington state fruit orchards: Effects on wildlife
A study of the effects of endrin on wildlife was conducted from 1981 to 1983 in fruit orchards in central Washington State. The single post-harvest application of endrin as a rodenticide resulted in both acute and chronic toxicity to a variety of avian species. Of 194 birds found dead, brains of 125 were analysed; endrin toxicosis accounted for >24% of the total and 37% of those analysed. Most mor
Authors
L. J. Blus, C. J. Henny, R. A. Grove
Effects of organophosphorus insecticides on sage grouse in southeastern Idaho
Unverified reports indicated die-offs of sage grouse have occurred since the 1970s in southeastern Idaho. Some verification that organophosphorus insecticides were involved was obtained in 1981 and 1983. A radio telemetry study indicated that dimethoate was responsible for most mortality. Methamidophos also acounted for mortality. Sage grouse populations may be adversely affected by organophos
Authors
L. J. Blus, C.S. Staley, C. J. Henny, G.W. Pendleton, T.H. Craig, E.H. Craig, D.K. Halford
Survival and movements of molting male black ducks in Labrador
We marked 26 flightless male American black ducks with transmitters during the post-nuptial molt in northern Labrabor to determine survival and movements. Twelve ducks remained in the watershed where marked and 11 ducks moved to different watersheds. The period survival rate (PSR) for these flightless males was 0.89 using the Kaplan-Meier estimator. Only 2 ducks were killed by predators. Death
Authors
Timothy D. Bowman, J. R. Longcore
Growth and morphometrics of the box turtle, Terrapene c. carolina
Growth of box turtles in a bottomland forest in Maryland was studied over a period of years (1944-1981). A bivariate analysis of age related growth showed that between 8 and 13 yr, male turtles grew at an average rate of 6.7% per year in carapace length, whereas females grew at 5.3% per year. Both males and females grew considerably more slowly between 14 and 19 years, males at 2.3% per year and
Authors
L. F. Stickel, C. M. Bunck
Selenium accumulation by raccoons exposed to irrigation drainwater at Kesterson National Wildlife Refuge, California, 1986
In February–March 1986, eight raccoons (Procyon lotor) were collected at Kesterson Reservoir (Merced Co., California), which had received selenium-contaminated irrigation drainwater, and four raccoons were collected at the nearby Volta Wildlife Area, which had not. Selenium concentrations in Kesterson raccoons averaged 19.9 ppm (μg/g dry wt) in liver, 28.3 ppm (dry wt) in hair, 21.6 ppm (dry wt) i
Authors
Donald R. Clark, P. A. Ogasawara, Gregory J. Smith, Harry M. Ohlendorf
Long-term persistence of dieldrin, DDT, and heptachlor epoxide in earthworms
Earthworms can accumulate persistent soilborne insecticides and are an important source of contamination of terrestrail wildlife. We treated experimental plots once with dieldrin, DDT, or heptachlor, and measured changes in insecticide concentrations in earthworms over a 20-year period. We estimated 'half-times,' defined as the time for a concentration in earthworms to be reduced by half. Deldr
Authors
W. N. Beyer, A. J. Krynitsky