Publications
These publications showcase the significant science conducted in our Science Centers.
Filter Total Items: 16739
Chemical and nutritional evaluation of soya protein preparations as primary nitrogen sources for rainbow trout (Oncorhynchus mykiss) Chemical and nutritional evaluation of soya protein preparations as primary nitrogen sources for rainbow trout (Oncorhynchus mykiss)
Five soya-bean preparations that had been subjected to various physicochemical processing procedures were chemically defined in respect to proximate analysis, amino acid analyses, protease inhibitor activity, soluble oligosaccharides and antigenicity. These soya preparations were then formulated, along with a low-temperature fish meal control, into six isonitrogenous and isocaloric...
Authors
G. L. Rumsey, S. G. Hughes, Robert Winfree
Acid Rain Acid Rain
Acid deposition, or acid rain as it is more commonly referred to, has become a widely publicized environmental issue in the U.S. over the past decade. The term usually conjures up images of fish kills, dying forests, "dead" lakes, and damage to monuments and other historic artifacts. The primary cause of acid deposition is emission of S02 and NOx to the atmosphere during the combustion...
Authors
Owen P. Bricker, Karen C. Rice
Preliminary report of extensive gyrfalcon and snowy owl mortality in northern Siberia Preliminary report of extensive gyrfalcon and snowy owl mortality in northern Siberia
No abstract available.
Authors
D. H. Ellis, D.G. Smith
Optimal allocation of point-count sampling effort Optimal allocation of point-count sampling effort
Both unlimited and fixed-radius point counts only provide indices to population size. Because longer count durations lead to counting a higher proportion of individuals at the point, proper design of these surveys must incorporate both count duration and sampling characteristics of population size. Using information about the relationship between proportion of individuals detected at a...
Authors
Richard J. Barker, John R. Sauer, William A. Link
Survey and evaluation of contaminants in earthworms and in soils derived from dredged material at confined disposal facilities in the Great Lakes region Survey and evaluation of contaminants in earthworms and in soils derived from dredged material at confined disposal facilities in the Great Lakes region
Soils derived from dredged material were collected, together with earthworms from nine confined disposal facilities located in the Great Lakes Region. These samples were analyzed for 18 elements, 11 organochlorine pesticides, PCBs, and 24 polycyclic aromatic hydrocarbons. The concentrations detected in earthworms were evaluated in terms of their potential hazard to wildlife, which for...
Authors
W. N. Beyer, C. Stafford
Ontogenetic changes in habitat use by juvenile turtles (Chelydra serpentina and Chrysemys picta) Ontogenetic changes in habitat use by juvenile turtles (Chelydra serpentina and Chrysemys picta)
No abstract available.
Authors
J.D. Congdon, S.W. Gotte, R.W. McDiarmid
Use of satellite telemetry for study of a gyrfalcon in Greenland Use of satellite telemetry for study of a gyrfalcon in Greenland
Long-term research in Greenland has yielded 1 8 years of incidental sightings and 2 years of surveys and observations of gyrfalcons(Falco rusticolus) around Sondrestromfjord, Greenland. Gyrfalcons nest on cliffs along fjords and near rivers and lakes throughout our 2590 sq. km study area. Nestlings are present mid-June to July. In 1990, we marked one adult female gyrfalcon with a 65 g...
Authors
S.S. Klugman, M.R. Fuller, P.W. Howey, M.A. Yates, J.J. Oar, J.M. Seegar, W.S. Seegar, G.M. Mattox, T.L. Maechtle
Horse impacts: research findings and their implications Horse impacts: research findings and their implications
No abstract available.
Authors
C. Widner, J. L. Marion
Proceedings of the Eighth American Woodcock Symposium Proceedings of the Eighth American Woodcock Symposium
No abstract available.
Authors
J. R. Longcore, G.F. Sepik
Point counts of birds in bottomland hardwood forests of the Mississippi Alluvial Valley: Duration, minimal sample size, and points versus visits Point counts of birds in bottomland hardwood forests of the Mississippi Alluvial Valley: Duration, minimal sample size, and points versus visits
The purpose of the research was to evaluate the efficacy of point count surveys in bottomland hardwood forests. The specific objectives were to determine: (1) whether the recommended distance measures for point count circular plots are useful in bottomland hardwood forests, (2) the optimum duration for each point count, (3) the optimum number of points to sample at each locality, (4) the...
Authors
W.P. Smith, D.J. Twedt, D.A. Wiedenfeld, P.B. Hamel, R.P. Ford, R.J. Cooper
Evaluating impacts of stream flow alteration on warmwater fishes Evaluating impacts of stream flow alteration on warmwater fishes
No abstract available.
Authors
Mary C. Freeman, J.H. Crance