Publications
These publications showcase the significant science conducted in our Science Centers.
Filter Total Items: 16731
Diet composition and fish consumption of double-crested cormorants from the Little Galloo Island colony of eastern lake Ontario in 1999 Diet composition and fish consumption of double-crested cormorants from the Little Galloo Island colony of eastern lake Ontario in 1999
No abstract available at this time
Authors
J. H. Johnson, R. M. Ross, R.D. McCullough
Diet composition and fish consumption of double-crested cormorants from the Pigeon and Snake Island Colonies of eastern Lake Ontario in 1999 Diet composition and fish consumption of double-crested cormorants from the Pigeon and Snake Island Colonies of eastern Lake Ontario in 1999
No abstract available at this time
Authors
J. H. Johnson, R. M. Ross, R.D. McCullough
Kaolin Kaolin
Part of the 1998 Industrial Minerals Review. Activities in the kaolin industry in 1999 are reviewed. U.S. production of kaolin in 1999 was estimated to be 10.7 million st, an increase of 0.3 million st from the previous year. The paper industry is the largest user of kaolin, accounting for 59 percent of domestic sales. Company activities, announcements, and plans of interest to the...
Authors
R.L. Virta
The presence of high-affinity, low-capacity estradiol-17β binding in rainbow trout scale indicates a possible endocrine route for the regulation of scale resorption The presence of high-affinity, low-capacity estradiol-17β binding in rainbow trout scale indicates a possible endocrine route for the regulation of scale resorption
High-affinity, low-capacity estradiol-17β (E2) binding is present in rainbow trout scale. The Kd and Bmax of the scale E2 binding are similar to those of the liver E2 receptor (Kd is 1.6 ± 0.1 and 1.4 ± 0.1 nM, and Bmax is 9.1 ± 1.2 and 23.1 ± 2.2 fmol × mg protein-1, for scale and liver, respectively), but different from those of the high-affinity, low-capacity E2 binding in plasma (Kd...
Authors
Petra Persson, J. Mark Shrimpton, S. D. McCormick, Bjorn Thrandur Bjornsson
Forty-second supplement to the American Ornithologists' Union Check-list of North American Birds Forty-second supplement to the American Ornithologists' Union Check-list of North American Birds
This first Supplement since publication of the 7th edition (1998) of the AOU Check-list of North American Birds summarizes changes made by the Committee on Classification and Nomenclature between its reconstitution in late 1998 and 31 January 2000.
Authors
R.C. Banks, C. Cicero, J.L. Dunn, A.W. Kratter, H. Ouellet, P.C. Rasmussen, J.V. Remsen, J.D. Rising, D.F. Stotz
GIS interpolations of witness tree records (1839-1866) for northern Wisconsin at multiple scales GIS interpolations of witness tree records (1839-1866) for northern Wisconsin at multiple scales
To construct forest landscape of pre-European settlement periods, we developed a GIS interpolation approach to convert witness tree records of the U.S. General Land Office (GLO) survey from point to polygon data, which better described continuously distributed vegetation. The witness tree records (1839-1866) were processed for a 3-million ha landscape in northern Wisconsin, U.S.A. at...
Authors
H.S. He, D.J. Mladenoff, T.A. Sickley, G.R. Guntenspergen
Comparison of helicopter and ground surveys of waterfowl broods in southern Ontario Comparison of helicopter and ground surveys of waterfowl broods in southern Ontario
Managers often employ aerial survey information to manage waterfowl. Results of surveys by helicopter and from elevated platforms were compared to determine the accuracy of helicopters to detect waterfowl broods on beaver ponds in southern Ontario in 1996 and 1997. Fewer broods were detected from the helicopter than by observers in elevated platforms at wetland margins. When broods were
Authors
T.S. Gabor, J. R. Longcore, H.R. Murkin, A.N. Arnason
Effects of calcium, magnesium, and sodium on alleviating cadmium toxicity to Hyalella azteca Effects of calcium, magnesium, and sodium on alleviating cadmium toxicity to Hyalella azteca
No abstract available.
Authors
B. P. Jackson, P. J. Lasier, W.P. Miller, P. V. Winger
Implications of regulating environmental contaminants on the basis of wildlife populations and communities Implications of regulating environmental contaminants on the basis of wildlife populations and communities
No abstract available.
Authors
W. N. Beyer, G. H. Heinz
The AOU Conservation Committee Review of the biology, status, and management of Cape Sable Seaside Sparrows: Final report The AOU Conservation Committee Review of the biology, status, and management of Cape Sable Seaside Sparrows: Final report
The Cape Sable Seaside Sparrow (Ammodramus maritimus mirabilis) was listed as an original member of the federal list of endangered species in 1968. It is restricted to seasonally flooded prairies of extreme southern Florida and is disjunct from all other conspecific breeding populations (Kushlan et al 1982, McDonald 1988). Since the subspecies was described in 1919, its populations have...
Authors
J. R. Walters, S.R. Beissenger, J.W. Fitzpatrick, R. Greenberg, J.D. Nichols, H.R. Pulliam, D.W. Winkler
A comprehensive monitoring program for North American shorebirds A comprehensive monitoring program for North American shorebirds
Anthropogenic changes to the biosphere, including widespread degradation and losses of habitats and ecosystems, are causing rapid and profound changes to bird and other wildlife populations throughout the world. Such changes have led to increasing risks and rates of extinction. As a consequence, information on how bird populations are changing is becoming increasingly important to...
Monitoring is not enough: on the need for a model-based approach to migratory bird management Monitoring is not enough: on the need for a model-based approach to migratory bird management
Informed management requires information about system state and about effects of potential management actions on system state. Population monitoring can provide the needed information about system state, as well as information that can be used to investigate effects of management actions. Three methods for investigating effects of management on bird populations are (1) retrospective...
Authors
J.D. Nichols