Publications
These publications showcase the significant science conducted in our Science Centers.
Filter Total Items: 16731
Management considerations and economics Management considerations and economics
No abstract available at this time
Authors
J. W. Meade
Diet composition and fish consumption of double-crested cormorants from the Little Galloo Island colony of eastern lake Ontario in 2000 Diet composition and fish consumption of double-crested cormorants from the Little Galloo Island colony of eastern lake Ontario in 2000
No abstract available at this time
Authors
J. H. Johnson, R. M. Ross, R.D. McCullough, B. Edmonds
Water resources data, Pennsylvania, water year 2000. Volume 3. Ohio and St. Lawrence River Basins Water resources data, Pennsylvania, water year 2000. Volume 3. Ohio and St. Lawrence River Basins
Introduction The Water Resources Division of the U.S. Geological Survey, in cooperation with State, municipal, and Federal agencies, collects a large amount of data pertaining to the water resources of Pennsylvania each water year. These data, accumulated during many water years, constitute a valuable data base for developing an improved understanding of the water resources of the State...
Authors
Raymond W. Siwicki
Total Phosphorus Loads for Selected Tributaries to Sebago Lake, Maine Total Phosphorus Loads for Selected Tributaries to Sebago Lake, Maine
The streamflow and water-quality datacollection networks of the Portland Water District (PWD) and the U.S. Geological Survey (USGS) as of February 2000 were analyzed in terms of their applicability for estimating total phosphorus loads for selected tributaries to Sebago Lake in southern Maine. The long-term unit-area mean annual flows for the Songo River and for small, ungaged...
Authors
Glenn A. Hodgkins
Effects of Pumping on Ground-Water Flow Near Water-Supply Wells in the Lower Potomac-Raritan-Magothy Aquifer, Pennsauken Township, Camden County, New Jersey Effects of Pumping on Ground-Water Flow Near Water-Supply Wells in the Lower Potomac-Raritan-Magothy Aquifer, Pennsauken Township, Camden County, New Jersey
Since the 1970's, hexavalent chromium has been detected in concentrations as great as 1.0 milligram per liter in wells at the Puchack well field operated by the Camden City Department of Utilities, Water Division (Water Department), forcing the Water Department to progressively remove five of its six wells from service between 1975 and 1988. The wells in the Puchack well field range in...
Authors
Richard L. Walker
A case for using Plethodontid salamanders for monitoring biodiversity and ecosystem integrity of North American forests A case for using Plethodontid salamanders for monitoring biodiversity and ecosystem integrity of North American forests
Terrestrial salamanders of the family Plethodontidae have unique attributes that make them excellent indicators of biodiversity and ecosystem integrity in forested habitats. Their longevity, small territory size, site fidelity, sensitivity to natural and anthropogenic perturbations, tendency to occur in high densities, and low sampling costs mean that counts of plethodontid salamanders...
Authors
Hartwell H. Welsh, Sam Droege
Continuing education needs for fishery professionals: a survey of North American fisheries administrators Continuing education needs for fishery professionals: a survey of North American fisheries administrators
North American fishery professionals? continuing education needs were investigated in an American Fisheries Society questionnaire sent to 111 senior fishery officials in winter 2000. Based on a response rate of 52.2% (N = 58), a minimum of 2,967 individuals would benefit from additional training, especially in the areas of statistics and analysis (83% endorsement rate), restoration and
Authors
G.N. Rassam, R. Eisler
Tumor prevalence and biomarkers of exposure in brown bullheads (Ameiurus nebulosus) from the tidal Potomac River, USA, watershed Tumor prevalence and biomarkers of exposure in brown bullheads (Ameiurus nebulosus) from the tidal Potomac River, USA, watershed
Associations between contaminant exposure and liver and skin tumor prevalence were evaluated in brown bullheads (Ameiurus nebulosus) from the tidal Potomac River, USA, watershed. Thirty bullheads (≥ age 3) were collected from Quantico embayment, near a Superfund site that released organochlorine contaminants; Neabsco Creek, a tributary with petroleum inputs from runoff and marinas; and...
Authors
A.E. Pinkney, J.C. Harshbarger, E.B. May, M. J. Melancon
Eleutherodactylus guttilatus (Spotted Chirping Frog), Bufo punctatus (Red-spotted Toad), Hyla arenicolor (Canyon Tree Frog), and Rana berlandieri (Rio Grande Leopard Frog). Mite Infestation Eleutherodactylus guttilatus (Spotted Chirping Frog), Bufo punctatus (Red-spotted Toad), Hyla arenicolor (Canyon Tree Frog), and Rana berlandieri (Rio Grande Leopard Frog). Mite Infestation
No abstract available.
Authors
R.E. Jung, S. Claeson, J. E. Wallace, W.C. Welbourn
Combining band recovery data and Pollock's robust design to model temporary and permanent emigration Combining band recovery data and Pollock's robust design to model temporary and permanent emigration
Capture-recapture models are widely used to estimate demographic parameters of marked populations. Recently, this statistical theory has been extended to modeling dispersal of open populations. Multistate models can be used to estimate movement probabilities among subdivided populations if multiple sites are sampled. Frequently, however, sampling is limited to a single site, Models...
Authors
M. S. Lindberg, W. L. Kendall, J.E. Hines, Michael G. Anderson
The pollinators: native and naturalized The pollinators: native and naturalized
No abstract available.
Authors
H. S. Ginsberg