Publications
These publications showcase the significant science conducted in our Science Centers.
Filter Total Items: 16905
The seventy-fourth Christmas bird count. 315. Southern Dorchester County, Md The seventy-fourth Christmas bird count. 315. Southern Dorchester County, Md
Because limited information is available regarding preferences for nocturnal habitat during winter, we studied use of nocturnal habitats by American woodcock (Scolopax minor) wintering in the Georgia Piedmont (1994-95). During the evening crepuscular period, woodcock on the wintering grounds move from forested to field habitats, presumably to feed, conduct courtship displays, roost, and...
Authors
James Berdeen, D.G. Krementz
Radon in the ground water of Chester County, Pennsylvania Radon in the ground water of Chester County, Pennsylvania
Authors
Ronald A. Sloto, Lisa A. Senior
Transport of agrichemicals to ground and surface water in a small central Indiana watershed Transport of agrichemicals to ground and surface water in a small central Indiana watershed
The occurrence, distribution, concentrations, and pathways of agrichemicals in water were investigated in the Sugar Creek watershed, a poorly drained agricultural watershed typical of many watersheds in the midwestern USA. Water samples from Sugar Creek, two tile drains, and 11 wells along a groundwater flowpath to Sugar Creek were collected between May 1992 and August 1996 and analyzed...
Authors
J.M. Fenelon, R.C. Moore
Trends in Indiana's water use 1986-1996 Special Report no. 1 Trends in Indiana's water use 1986-1996 Special Report no. 1
No abstract available.
Authors
Donald V. Arvin, Ralph Spaeth
Lithium Lithium
The lithium industry can be divided into two sectors: ore concentrate producers and chemical producers. Ore concentrate producers mine lithium minerals. They beneficiate the ores to produce material for use in ceramics and glass manufacturing.
Authors
J. Ober
Yields and trends of nutrients and total suspended solids in nontidal areas of the Chesapeake Bay basin, 1985-96 Yields and trends of nutrients and total suspended solids in nontidal areas of the Chesapeake Bay basin, 1985-96
Excessive concentrations of nutrients and suspended solids in water adversely affect water quality in the Chesapeake Bay. High levels of nutrients in the Bay result in algal blooms and suspended solids reduce water clarity, both of which decrease the amount of light reaching submerged aquatic vegetation (SAV). The die off and decomposition of algae and SAV deplete oxygen supplies in the...
Authors
Michael J. Langland
Estimating population parameters for northern and southern breeding populations of Canada geese Estimating population parameters for northern and southern breeding populations of Canada geese
Canada geese (Branta canadensis) have been managed largely as a migratory resource. In the 1960's, Canada goose flocks were restored to historic breeding ranges in the United States and southern Canada to enhance recreational opportunity for observation and harvest. These populations of southern breeding geese have rapidly expanded, increasing conflicts with social and economic interests...
Authors
J.B. Hestbeck
Backyard bolides: Finding a buried impact crater Backyard bolides: Finding a buried impact crater
Geologist Wylie Poag explains how he happened to find a major impact crater buried beneath Chesapeake Bay.
Authors
C. Wylie Poag
Renewal of voluntary feeding by wild‐caught Atlantic sturgeon juveniles in captivity Renewal of voluntary feeding by wild‐caught Atlantic sturgeon juveniles in captivity
A modification of previously documented force‐feeding procedures resulted in the renewal of appetite by several wild‐caught juvenile Atlantic sturgeon Acipenser oxyrinchus. Four of four fish under controlled laboratory conditions responded positively to this technique within 1 month. These fish exhibited negative mean growth rates of −2.71 g/d before force‐feeding and gained an average...
Authors
M. N. DiLauro
Use of geochemical mass balance modelling to evaluate the role of weathering in determining stream chemistry in five mid-Atlantic watersheds on different lithologies Use of geochemical mass balance modelling to evaluate the role of weathering in determining stream chemistry in five mid-Atlantic watersheds on different lithologies
No abstract available.
Authors
Anne K. O’Brien, Karen C. Rice, Owen P. Bricker, Margaret M. Kennedy, R. Todd Anderson
Morphological adaptation with no mitochondrial DNA differentiation in the coastal plain swamp sparrow Morphological adaptation with no mitochondrial DNA differentiation in the coastal plain swamp sparrow
We estimated genetic differentiation between morphologically distinct tidal marsh populations of Swamp Sparrows (Melospiza georgiana nigrescens) and the more widespread inland populations (M. g. georgiana and M. g. ericrypta). The tidal marsh populations are consistently grayer with more extensive black markings (particularly in the crown), and their bills are larger. These differences...
Authors
R. Greenberg, P.J. Cordero, Sam Droege, R.C. Fleischer
Monitoring populations of plants and animals Monitoring populations of plants and animals
No abstract available.
Authors
J.P. Gibbs, Sam Droege, P. Eagle