Publications
These publications showcase the significant science conducted in our Science Centers.
Filter Total Items: 16740
Recent numerical changes in North American roseate terns and their conjectured cause Recent numerical changes in North American roseate terns and their conjectured cause
No abstract available.
Authors
J.J. Hatch, J. A. Spendelow, J.D. Nichols, J.E. Hines
Survival and fates of staging juvenile, female mallards in the Vermont / Quebec border region Survival and fates of staging juvenile, female mallards in the Vermont / Quebec border region
We alternately marked 80 juvenile, female mallards (Anas platyrhynchos), half with transmitters and bands and half with only bands in 1990 and 1991. Survival of radio-marked ducks was monitored daily and then summarized weekly for the periods 31 August - 6 December, 1990 (weeks 5-18) and 11 September - 6 December, 1991) (weeks 6-18). The pattern of survival throughout the staging period...
Authors
J. R. Longcore, D.G. McAuley, C.M. Bunck
Optimal management strategies for biodiversity within a powerline right-of-way Optimal management strategies for biodiversity within a powerline right-of-way
Management techniques used to control vegetation along a new 8.5 km- (5.3 mile) long powerline right-of-way located at Patuxent Research Refuge are being evaluated to identify changes in habitat that affect wildlife. Techniques include: complete mow, strip mow, low volume foliar spray, selective basal spray, and tree topping. One hundred and one bird species were recorded during line...
Authors
Matthew C. Perry, P.C. Osenton, F.W. Fallon, J.E. Fallon
Bottomland forest composition and seedling diversity Bottomland forest composition and seedling diversity
No abstract available.
Authors
S.W. Seagle, S-Y. Liang
Effects of forest management on population parameters and habitat use of wood thrushes. Final Report Effects of forest management on population parameters and habitat use of wood thrushes. Final Report
No abstract available.
Authors
M.J. Conroy, D.G. Krementz, L.A. Powell, J. D. Lang
Physical processes affecting the sedimentary environments of Long Island Sound Physical processes affecting the sedimentary environments of Long Island Sound
A modeling study was undertaken to simulate the bottom tidal-, wave-, and wind-driven currents in Long Island Sound in order to provide a general physical oceanographic framework for understanding the characteristics and distribution of seafloor sedimentary environments. Tidal currents are important in the funnel-shaped eastern part of the Sound, where a strong gradient of tidal-current...
Authors
R. P. Signell, H.J. Knebel, J. H. List, A.S. Farris
An experimental design for examining the influence on environmental factors on downstream migratory behavior An experimental design for examining the influence on environmental factors on downstream migratory behavior
No abstract available at this time
Authors
G.P. Barbin, S. D. McCormick, A.J. Haro
Epidermal tumors of rainbow smelt with associated virus Epidermal tumors of rainbow smelt with associated virus
Epithelial tumors of the skin occurred in landlocked populations of rainbow smelt (Osmerus mordax) in several lakes in New Hampshire (USA) during the spawning runs. Histologically, these were noninvasive epithelial cell lesions. Herpesvirus-like particles could be seen in the nucleus and cytoplasm. The lesions occurred in both males and females. Prevalence, which varied annually, was as...
Authors
R. L. Herman, C.N. Burke, S. Perry
Comparative behaviour and dietary effects in early life phases of American sturgeons Comparative behaviour and dietary effects in early life phases of American sturgeons
Experiments were conducted with the larvae and early juveniles of three species of sturgeon to determine effects of diet and development on swimming and foraging behaviour as well as depth distribution in 100-L aquaria. About 500 hatchlings were placed in each tank with two or three replicates of three or six diet treatments, including live and dry feeds. Eight types of swimming or...
Authors
R. M. Ross, R. M. Bennett
Contaminant exposure, biochemical, and histopathological biomarkers in white suckers from contaminated and reference sites in the Sheboygan River, Wisconsin Contaminant exposure, biochemical, and histopathological biomarkers in white suckers from contaminated and reference sites in the Sheboygan River, Wisconsin
Fish populations of the lower Sheboygan River, located in east-central Wisconsin, are considered impaired under the Great Lakes Water Quality Agreement between the United States and Canada. Pollutants in the Sheboygan River system include: polychlorinated biphenyls (PCBs), polycyclic aromatic hydrocarbons (PAHs), and heavy metals. This study compared general health and biochemical...
Authors
C.S. Schrank, S.M. Cormier, V. S. Blazer
Absorption of dietary dieldrin by striped bass Absorption of dietary dieldrin by striped bass
No abstract available.
Authors
C.R. Santerre, V. S. Blazer, N. Khanna, R.E. Reinert, F.T. Barrows
Growth of red drum, Sciaenops ocellatus, to maturity on experimental diets Growth of red drum, Sciaenops ocellatus, to maturity on experimental diets
Red drum, Sciaenops ocellatus, were raised from juveniles averaging 2.5 g to adults averaging 6.1 kg. Growth rates with simple experimental starter and grower feeds were similar to those with one of the best-performing commercial starter feeds for marine fish. Over the size range of 4.3-2,243 g, experimental feed cost per unit of growth gradually increased from $0.88/kg to $ 1.54/kg live...
Authors
J. W. Tucker, W.A. Lellis, G. K. Vermeer, D. E. Roberts, P. N. Woodward