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Page 3701, results 92501 - 92525

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Publication Extents

Not all publications have extents, not all extents are completely accurate
A resource conservative procedure for comparison of dose-response relationships
W.A. Link, E. F. Hill, J.E. Hines, P.F.P. Henry
1996, Environmental Toxicology and Chemistry (15) 1612-1617
The evaluation of effects of toxicants on a wildlife community can be complicated by varying responses among the community's constituent populations. Even within populations, considerable variability in dose-response relations may result from different avenues of exposure to the toxicant. Full-scale investigations of the dose-response relations among a variety of species...
In memoriam: Robert Earl Stewart, Sr., 1913-1993
Chandler S. Robbins, M.B. Meanley
1996, The Auk (113) 680-682
Robert Earl Stewart, Sr., our colleague, close friend, and mentor, was born on 16 April 1913 in Kansas City, Missouri. He graduated from high school in Grimes, Iowa, received his B.S. in Biology from the University of Iowa in 1936, and his M.S. in Zoology from the University of Michigan...
Effects of boron and selenium on mallard reproduction and duckling growth and survival
T.R. Stanley Jr., G. J. Smith, D. J. Hoffman, G. H. Heinz, R. Rosscoe
1996, Environmental Toxicology and Chemistry (15) 1124-1132
Boron (B) and selenium (Se) sometimes occur together in high concentrations in the environment and can accumulate in plants and invertebrates consumed by waterfowl. One hundred twenty-six pairs of breeding mallards (Anas platyrhynchos) were fed diets supplemented with B (as boric acid) at 0, 450, or 900 ppm, in...
Surveys of Puerto Rican screech-owl populations in large-tract and fragmented forest habitats
K.L. Pardieck, J.M. Meyers, M. Pagan
1996, The Wilson Bulletin (108) 776-782
We conducted road surveys of Puerto Rican Screech-Owls (Otus nudipes) by playing conspecific vocalizations in secondary wet forest and fragmented secondary moist forest in rural areas of eastern Puerto Rico. Six paired surveys were conducted bi-weekly beginning in April. We recorded number of owl responses, cloud cover, wind speed,...
In memoriam: Harvey I. Fisher, 1916-1994
G.H. Waring, Chandler S. Robbins
1996, The Auk (113) 928-930
Harvey Irvin Fisher was born on 15 June 1916 in Edgar, Nebraska, and spent his youth near Blue Springs, Missouri. Following his A.A. from Kansas City in 1935, and B.S. from Kansas State University in 1937, he married Mildred Hoch; they had three sons. He received his Ph.D. from the...
Patch occupancy and dispersal of spruce grouse on the edge of its range in Maine
S.A. Whitcomb, F. A. Servello, A.F. O'Connell Jr.
1996, Canadian Journal of Zoology (74) 1951-1995
We surveyed 18 habitat patches (black spruce (Picea marinana) - tamarack (Larix larcina) wetlands) for spruce grouse (Dendragapus canadensis canadensis) on Mount Desert Island, Maine, during April-May in 1992 and 1993 to determine patch occupancy relative to patch area. We also equipped nine juvenile grouse with radio transmitters to...
Habitat associations of birds in the Georgia piedmont during winter
Donald H. White, C. B. Kepler, Jeff S. Hatfield, P.W. Sykes Jr., J.T. Seginak
1996, Journal of Field Ornithology (67) 159-166
During three winter seasons (1991-1994), we studied the distribution and abundance of birds in three habitat types of the Georgia Piedmont. Bird densities were calculated using data from 2160 variable circular-plot counts, 720 each in the interiors of the three habitats. Habitat variables were measured in 135 0.04-ha...
Productivity of the spruce grouse in fragmented habitat at the edge of its range
S.D. Whitcomb, A.F. O'Connell Jr., F. A. Servello
1996, Journal of Field Ornithology (67) 422-427
We measured productivity of the Spruce Grouse (Dendragapusc anadensicsa nadensis) in patchy black spruce (Picea mariana) habitat along the southeastern limit of its range in mid-coastal Maine. We captured grouse and attached necklace-mounted radio transmitters to hens prior to nesting. Of 19 females monitored, only 26% raised chicks to the...
Review of factors affecting the distribution and abundance of waterfowl in shallow-water habitats of Chesapeake Bay
Matthew C. Perry, A.S. Deller
1996, Estuaries (19) 272-278
Long-term trends of waterfowl populations in Chesapeake Bay demonstrate the importance of shallow-water habitats for waterfowl species. Although recent increases in field feeding by geese and swans lessened the importance of shallow-water areas for these species, most duck species depend almost exclusively on shallow-water habitats. Many factors influenced the distribution...
Seed deterioration in flooded agricultural fields during winter
C.O. Nelms, D.J. Twedt
1996, Wildlife Society Bulletin (24) 85-88
We determined rate of seed deterioration for 3 crops (corn, rice, and soybean) and 8 weeds commonly found in agricultural fields and moist-soil management units in the Mississippi Alluvial Valley (MAV). The weeds were broadleaf signalgrass (Brachiaria platyphylla), junglerice barnyardgrass (Echinochloa colonum), morningglory (Ipomoea sp.), panic grass (Panicum sp.), bull...
Nymphal survival and habitat distribution of Ixodes scapularis and Amblyomma americanum ticks (Acari:Ixodidae) on Fire Island, New York
H. S. Ginsberg, E. Zhioua
1996, Experimental and Applied Acarology (20) 533-544
The distribution and survival of Ixodes scapularis and Amblyomma americanum were studied in deciduous and coniferous wooded habitats and in open habitats on Fire Island, New York, USA. The survival of nymphal I. scapularis in field enclosures was greater in forests than in open habitats, suggesting that greater survival contributes...
Dependence of waterbirds and shorebirds on shallow-water habitats in the Mid-Atlantic coastal region: An ecological profile and management recommendations
R.M. Erwin
1996, Estuaries (19) 213-219
Waterbirds (waterfowl, colonially nesting wading and seabirds, ospreys [Pandion haliaetus], and bald eagles [Haliaeetus leucocephalus]) and shorebirds (sandpipers, plovers, and relatives) may constitute a large fraction of the toplevel carnivore trophic component in many shallow-water areas of the mid-Atlantic region. The large biomass of many species (>1 kg body mass...
New records of predaceous diving beetles (Coleoptera:Dytiscidae) in Maine
L.R. Boobar, K.E. Gibbs, J. R. Longcore, A.M. Perillo
1996, Entomological News (107) 267-271
Locations, habitat descriptions, and collection dates are listed for new records of 4 genera and 12 species of predaceous diving beetles (Coleoptera: Dytiscidae) in Maine. Previously, 17 genera and 53 species of the aquatic beetle were reported from Maine....
Nesting behavior of the poo-uli
C. B. Kepler, T.K. Pratt, A.M. Ecton, A. Engilis Jr., K.M. Fluetsch
1996, The Wilson Bulletin (108) 620-638
We describe two sequential nestings of a pair of Poo-uli (Melamprosops phaeosoma), a Hawaiian honeycreeper nearing extinction. Similarities to nesting of most other honeycreepers included: nest site in ohia lehua (Metrosideros polymorpha Gaud.) canopy; breeding in March through June; monogamous breeding system with the putative male helping build the nest,...
Comparison of the effects of seleno-Lmethionine, seleno-DL-methionine, and selenized yeast on reproduction of mallards
G. H. Heinz, D. J. Hoffman
1996, Environmental Pollution (91) 169-175
The toxicities of seleno-l-methionine, seleno-dl-methionine, and selenized yeast were compared. Ten pairs of mallards were fed a control diet and 15 pairs were fed diets containing 10 ppm selenium as seleno-dl-methionine, seleno-l-methionine, or selenized yeast. Hatching of fertile eggs was significantly lower for females fed 10...
Accumulation of chlorinated benzenes in earthworms
W. N. Beyer
1996, Bulletin of Environmental Contamination and Toxicology (57) 729-736
Chlorinated benzenes are widespread in the environment. Hexachlorobenzene, pentachlorobenzene and all isomers of dichlorobenzenes, trichlorobenzenes, and tetrachlorobenzenes, have been detected in fish, water, and sediments from the Great Lakes. This paper describes a long-term (26 week) experiment relating the concentrations of chlorinated benzenes in earthworms to 1) the...
First-time observer effects in the North American Breeding Bird Survey
W. L. Kendall, B.G. Peterjohn, J.R. Sauer
1996, The Auk (113) 823-829
Currently the operational analysis of Breeding Bird Survey (BBS) data by the National Biological Service accounts for observer differences in estimating the trend for each route, but within-observer differences are not modeled. We tested for the existence of a form of within-observer differences in skill level, namely a change in...