Publications
These publications showcase the significant science conducted in our Science Centers.
Filter Total Items: 16731
Fish-community composition in Cowanesque River upstream and downstream of the Cowanesque Dam, Tioga County, Pennsylvania, 1998 Fish-community composition in Cowanesque River upstream and downstream of the Cowanesque Dam, Tioga County, Pennsylvania, 1998
Between February 1997 and September 1997, 10 monitor wells were drilled near the site of the former Naval Air Warfare Center, Warminster, Bucks County, Pa., to monitor water levels and sample ground-water contaminants in the shallow, intermediate, and deep water-bearing zones. The sampling will determine the horizontal and vertical distribution of contaminated ground water migrating from...
Authors
Robin A. Brightbill, Michael D. Bilger
Influence of deer abundance on the abundance of questing adult Ixodes scapularis (Acari: Ixodidae) Influence of deer abundance on the abundance of questing adult Ixodes scapularis (Acari: Ixodidae)
Nymphal and adult Ixodes scapularis Say were sampled by flagging at 2 sites on a barrier island, Fire Island, NY, and at 2 sites on the nearby mainland. Nymphal densities did not differ consistently between island and mainland sites, but adult densities were consistently lower on the island. We tested whether lower adult densities on the island resulted from greater nymphal mortality on...
Authors
H. S. Ginsberg, E. Zhioua
Factors influencing counts in an annual survey of Snail Kites in Florida Factors influencing counts in an annual survey of Snail Kites in Florida
Snail Kites (Rostrhamus sociabilis) in Florida were monitored between 1969 and 1994 using a quasi-systematic annual survey. We analyzed data from the annual Snail Kite survey using a generalized linear model where counts were regarded as overdispersed Poisson random variables. This approach allowed us to investigate covariates that might have obscured temporal patterns of population...
Authors
R.E. Bennetts, W.A. Link, J.R. Sauer, P.W. Sykes
Fifty-eighth Christmas Bird Count. 166. Ocean City, Md Fifty-eighth Christmas Bird Count. 166. Ocean City, Md
Gauging the impact of manipulative activities, such as rehabilitation or management, on wetlands requires having a notion of the unmanipulated condition as a reference. An understanding of the reference condition requires knowledge of dominant factors influencing ecosystem processes and biological communities. In this paper, we focus on natural physical factors (conditions and processes)...
Authors
J.R. Keough, T.A. Thompson, G.R. Guntenspergen, D.A. Wilcox
Cumulative Index to Chemicals and to Common and Scientific Names of Species Listed in Contaminant Hazard Reviews 1 through 34 Cumulative Index to Chemicals and to Common and Scientific Names of Species Listed in Contaminant Hazard Reviews 1 through 34
The Patuxent Wildlife Research Center Contaminant Hazard Reviews (CHR) series synthesizes ecotoxicological data of selected environmental contaminants, with emphasis on hazards to native species of flora and fauna. From 1985 through 1998 a total of 34 reviews were published in various Reports series of the U.S. Department of the Interior on agricultural pesticides (carbofuran, chlordane
Authors
R. Eisler
Annotated bibliography of methodologies to census, estimate, and monitor the size of white-tailed deer Odocoileus virginianus populations Annotated bibliography of methodologies to census, estimate, and monitor the size of white-tailed deer Odocoileus virginianus populations
No abstract available.
Authors
A.F. O'Connell, L. Ilse, J. Zimmer
Offroad vehicle riders in Big Cypress National Preserve: Results from a survey of permit holders Offroad vehicle riders in Big Cypress National Preserve: Results from a survey of permit holders
A survey of 800 offroad vehicle (ORV) owners at Big Cypress National Preserve, Florida, was conducted to obtain information on visitor characteristics and management preferences. This report characterizes survey results for riders of all-terrain vehicles, swamp buggies, standard 4-wheeled street vehicles, and airboats. Riders tended to feel satisfied with their ORV experiences and...
Authors
T. Farrell, A. Kendra, J. Roggenbuck, T. Hall, J. L. Marion
Adaptive harvest management of waterfowl: implementation and evolution Adaptive harvest management of waterfowl: implementation and evolution
No abstract available.
Authors
W. L. Kendall
The Black-capped Vireo in Mexico and Ft. Hood The Black-capped Vireo in Mexico and Ft. Hood
No abstract available.
Authors
J.T. Marshall, R. B. Clapp
Corridors: Reconnecting fragmented landscapes Corridors: Reconnecting fragmented landscapes
No abstract available.
Authors
A. Dobson, K. Ralls, M.S. Foster, M. E. Soule, D. Simberloff, D. Doak, J. A. Estes, L. S. Mills, D. Mattson, R. Dirzo, H. Arita, S. Ryan, E. A. Norse, R. F. Noss, D. Johns