Publications
These publications showcase the significant science conducted in our Science Centers.
Filter Total Items: 16966
The generic name of the crested argus, Rheinardia ocellata The generic name of the crested argus, Rheinardia ocellata
No abstract available.
Authors
Richard C. Banks
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
Effects of acidification on metal accumulation by aquatic plants and invertebrates. 1. Constructed wetlands Effects of acidification on metal accumulation by aquatic plants and invertebrates. 1. Constructed wetlands
Compared were concentrations of Al, Cd, Ca, Cu, Fe, Hg, Pb, Mg, Mn, Ni, P, and Zn in water, plants, and aquatic insects of three acidified (pH ∼ 5.0) and three nonacidified (pH ˜ 6.5) constructed wetlands. Concentrations of Zn in water and bur-reed (Sparganium americanum) were higher in acidified wetlands than in nonacidified wetlands. Floating nonrooted plants contained mean...
Authors
P.H. Albers, M.B. Camardese
Effects of acidification on metal accumulation by aquatic plants and invertebrates. 2. Wetlands, ponds and small lakes Effects of acidification on metal accumulation by aquatic plants and invertebrates. 2. Wetlands, ponds and small lakes
Compared were concentrations of Al, Cd, Ca, Cu, Fe, Pb, Mg, Mn, Hg, Ni, P, and Zn in water, plants, and aquatic invertebrates of wetlands, ponds, and small lakes in Maryland and Maine. The accumulation of metals by aquatic plants and insects and the concentration of metals in water were not greatly affected by pH. None of the metal concentrations in water significantly correlated with...
Authors
P.H. Albers, M.B. Camardese
Wolverine specimen from south-central Washington state Wolverine specimen from south-central Washington state
No abstract available.
Authors
L. J. Blus, L. Fitzner, R. E. Fitzner
Predicting the distribution of breeding forest birds in a fragmented landscape Predicting the distribution of breeding forest birds in a fragmented landscape
No abstract available.
Authors
D.K. Dawson, L.J. Darr, C.S. Robbins
Nests and eggs of colonial birds nesting in Malheur Lake, Oregon, with notes on DDE Nests and eggs of colonial birds nesting in Malheur Lake, Oregon, with notes on DDE
We describe the nests and eggs of 7 species of colonial birds that nested on Malheur Lake in Malheur National Wildlife Refuge, Oregon, in 1980 and 1981. All nests were constructed over water in stands of hardstem bulrush (Scirpus acutus). We compared nest measurements among species and found significant differences. Nest size was highly correlated with bird body mass. The heavier the...
Authors
J.E. Cornely, S.P. Thompson, Charles J. Henny, C.D. Littlefield
Telemetry via satellites for raptor studies Telemetry via satellites for raptor studies
Monitoring animal movements by satellite was first ac complished in 1970 with an elk in Wyoming. The large size of early transmitter packages restricted their use to very large animals. Miniaturization of electronic components in the 1980s allowed application of satellite telemetry to large birds. Satellite transmitters have been tested with mixed results on geese, swans, petrels...
Authors
M.R. Fuller, D. H. Ellis, S.S. Klugman
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
Habitat suitability index model for brook trout in streams of the Southern Blue Ridge Province: Surrogate variables, model evaluation, and suggested improvements Habitat suitability index model for brook trout in streams of the Southern Blue Ridge Province: Surrogate variables, model evaluation, and suggested improvements
Data from several sources were collated and analyzed by correlation, regression, and principal components analysis to define surrrogate variables for use in the brook trout (Salvelinus fontinalis) habitat suitability index (HSI) model, and to evaluate the applicability of the model for assessing habitat in high elevation streams of the southern Blue Ridge Province (SBRP). In all data...
Authors
C. J. Schmitt, A.D. Lemly, P. V. Winger
Birds of prey in Virginia, an addendum to specimen records Birds of prey in Virginia, an addendum to specimen records
No abstract available.
Authors
D.W. Johnston, R. B. Clapp