Publications
These publications showcase the significant science conducted in our Science Centers.
Filter Total Items: 16731
Hydrogeologic framework of the diabase aquifer at the Boarhead Farms Superfund site, Bridgeton Township, Bucks County, Pennsylvania Hydrogeologic framework of the diabase aquifer at the Boarhead Farms Superfund site, Bridgeton Township, Bucks County, Pennsylvania
The hydrogeologic investigation at the Boarhead Farms Superfund site was done to characterize the framework of the diabase aquifer underlying the site. The primary water-producing fracture system is less than 30 feet below land surface. Water-bearing fractures were not found deeper than 50 feet below land surface. The overburden soil is thin and ranges from 4 to 14 feet thick. The...
Authors
Curtis L. Schreffler
Potential predation by fish crows at bird boxes Potential predation by fish crows at bird boxes
No abstract available.
Authors
R. B. Clapp
Dispersal and habitat use by post-fledging juvenile snowy egrets and black-crowned night-herons Dispersal and habitat use by post-fledging juvenile snowy egrets and black-crowned night-herons
We studied the postfledging dispersal movements and habitat use of juvenile Snowy Egrets (Egretta thula) (SNEG) and Black-crowned Night-Herons (Nycticorax nycticorax) (BCNH) in coastal Virginia using a dye (picric acid) and radiotelemetry. Results from monitoring radiomarked birds revealed significant differences both years between species, with SNEGs dispersing more widely than BCNHs...
Authors
R.M. Erwin, J.G. Haig, Daniel B. Stotts, Jeff S. Hatfield
Can earthworms survive fire retardants? Can earthworms survive fire retardants?
Most common fire retardants are foams or are similar to common agricultural fertilizers, such as ammonium sulfate and ammonium phosphate. Although fire retardants are widely applied to soils, we lack basic information about their toxicities to soil organisms. We measured the toxicity of five fire retardants (Firetrol LCG-R, Firetrol GTS-R, Silv-Ex Foam Concentrate, Phos-chek D-75, and...
Authors
W. N. Beyer, A. Olson
Trouble in paradise: The brown tree snake in the western Pacific Trouble in paradise: The brown tree snake in the western Pacific
The brown treesnake (Boiga irregularis) was recognized as a pest species by Congress in Section 1209 of the Nonindigenous Aquatic Nuisance Prevention and Control Act of 1990 (NANPCA). Like aquatic pests, tree snakes are sometimes dispersed by ships, have wide-ranging effects on natural and human communities, and threaten to spread to other areas. The problems they are causing on Guam, a...
Authors
T. H. Fritts, G.H. Rodda
Age-specific survival and philopatry in three species of European ducks: A long-term study Age-specific survival and philopatry in three species of European ducks: A long-term study
Capture-recapture and band recovery models were used to estimate age-specific survival probabilities for female Northern Shovelers (Anas clypeata), Common Pochards (Aythya ferina), and Tufted Ducks (Aythya.fuligula) at Engure Marsh, Latvia, in 1964-1993. We banded more than 65,100 day-old ducklings of both sexes and captured 10,211 incubating females (3,713 new bandings and 6,498...
Authors
Peter Blums, Aivars Mednis, I. Bauga, J.D. Nichols, J.E. Hines
Endocrine and developmental effects of environmental contaminants in birds Endocrine and developmental effects of environmental contaminants in birds
No abstract available.
Authors
J.B. French, P.F.P. Henry, M. A. Ottinger, Barnett A. Rattner
Use of parasite-specific monoclonal antibodies to study invasion and early development of Eimeria gruis in the Florida Sandhill Crane Use of parasite-specific monoclonal antibodies to study invasion and early development of Eimeria gruis in the Florida Sandhill Crane
No abstract available.
Authors
P.C. Augustine, H.D. Danforth, P. N. Klein
Capture-recapture survival models taking account of transients Capture-recapture survival models taking account of transients
No abstract available.
Authors
R. Pradel, J.E. Hines, J.D. Lebreton, J.D. Nichols
Ecology, Conservation, and Management of Colonial Waterbirds in the Mediterranean Region Ecology, Conservation, and Management of Colonial Waterbirds in the Mediterranean Region
(excerpt from Forword) The Mediterranean Symposium, part of the annual conference of The Colonial Waterbird Society in October 1993 in Arles, France, was the successful culmination of ideas shared among leading European waterbird and wetland scientists... Both invited and contributed papers focused on two areas - breeding biology (especially of threatened or little known species), and...
Environmental Contaminants in Wildlife: Interpreting Tissue Concentrations Environmental Contaminants in Wildlife: Interpreting Tissue Concentrations
Covers the complex issue of how to evaluate contaminants in wildlife. This comprehensive resource deals with the question: 'How much of a chemical in the tissues of an animal is harmful?' Features: Authoritative and sound advice is provided on many environmental contaminants, including what the contaminants are and how to interpret the data on them. Each chapter includes a review of the
Comment to the paper, 'A heuristic approach to validating monitoring programs based on count indices (damn the statisticians, full speed ahead)' Comment to the paper, 'A heuristic approach to validating monitoring programs based on count indices (damn the statisticians, full speed ahead)'
No abstract available.
Authors
P.H. Geissler