Publications
These publications showcase the significant science conducted in our Science Centers.
Filter Total Items: 16743
DC birdscape: a program for monitoring neotropical migrant birds in Washington, DC DC birdscape: a program for monitoring neotropical migrant birds in Washington, DC
Urban and suburban habitats often contain a variety of Neotropical migratory birds, but are poorly sampled by programs such as the North American Breeding Bird Survey. DC Birdscape was developed to inventory and monitor birds in Washington, D.C. Birds were surveyed using a systematic sample of point counts during 1993-1995. Results indicate that species richness of Neotropical migratory...
Authors
J.R. Sauer, J. Hadidian, C. Swarth, Sam Droege, P. Handly, G. Diddan, J. Huff
Creating and managing wetland impoundments to provide habitat for aquatic birds Creating and managing wetland impoundments to provide habitat for aquatic birds
Patuxent Research Refuge, located in Central Maryland (USA), has approximately 140 ha of impoundments that were constructed for recreational and wildlife conservation purposes. Impoundments are of three major designs: dammed ravines, excavated basins, and diked ponds. Over 50 species of wetland plants were transplanted to impoundments of Patuxent from many parts of the United States...
Authors
Matthew C. Perry, P. Kangas, H.H. Obrecht
Sea ducks in the Atlantic Flyway: population status and a review of special hunting seasons Sea ducks in the Atlantic Flyway: population status and a review of special hunting seasons
No abstract available.
Authors
David F. Caithamer, M. Otto, P.I. Padding, J.R. Sauer, G.H. Haas
Analysis of atrazine and four degradation products in the pore water of the vadose zone, central Indiana Analysis of atrazine and four degradation products in the pore water of the vadose zone, central Indiana
A new method is described for the analysis of atrazine and four of its degradation products (desethylatrazine, deisopropylatrazine, didealkylatrazine, and hydroxyatrazine) in water. This method uses solid- phase extraction on a graphitized carbon black cartridge, derivatization of the eluate with N-methyl-N-(tert-butyldimethylsilyl)trifluoroacetamide (MTBSTFA), and analysis by gas...
Authors
S.Y. Panshin, D.S. Carter, E.R. Bayless
Field test of a new method for tracking small fishes shallow rivers using passive integrated transponder (PIT) technology Field test of a new method for tracking small fishes shallow rivers using passive integrated transponder (PIT) technology
No abstract available.
Authors
J.-M. Roussel, A. Haro, R.A. Cunjak
Tank and raceway culture Tank and raceway culture
No abstract available at this time
Authors
S.T. Summerfelt, M.B. Timmons, B.J. Watten
Toxicity of acidified chitosan for cultured rainbow trout (Oncorhynchus mykiss) Toxicity of acidified chitosan for cultured rainbow trout (Oncorhynchus mykiss)
Chitosan is a deacetylation product of chitin. It is used as a flocculent for sewage and brewery wastes, and as a chelator of heavy metals. In aquaculture, chitosan has been used as an immunostimulant for protection against bacterial diseases in fish, for controlled release of vaccines, and as a diet supplement. Chitosan has generally been considered to be nontoxic to animals, but when...
Authors
G. Bullock, V. Blazer, S. Tsukuda, S. Summerfelt
The use of mathematical models to predict beach behavior for U.S. coastal engineering: A critical review The use of mathematical models to predict beach behavior for U.S. coastal engineering: A critical review
A number of assumed empirical relationships (e.g., the Bruun Rule, the equilibrium shoreface profile, longshore transport rate equation, beach length: durability relationship, and the renourishment factor) and deterministic numerical models (e.g., GENESIS, SBEACH) have become important tools for investigating coastal processes and for coastal engineering design in the U.S. They are also...
Authors
E.R. Thieler, O.H. Pilkey, R.S. Young, D. M. Bush, F. Chai
Stable hydrogen and oxygen isotope ratios for selected sites of the National Oceanic and Atmospheric Administration's Atmospheric Integrated Research Monitoring Network (AIRMoN) Stable hydrogen and oxygen isotope ratios for selected sites of the National Oceanic and Atmospheric Administration's Atmospheric Integrated Research Monitoring Network (AIRMoN)
Increasingly, hydrologic studies require information on the isotopic composition of natural waters. This report presents stable hydrogen (δ2H) and oxygen isotope ratios (δ180) of precipitation samples from seven selected sites of the National Oceanic and Atmospheric Administration's Atmospheric Integrated Research Monitoring Network (AIRMoN) collected during the years 1992-1994.
Authors
Tyler B. Coplen, Richard Huang
Report of the U.S. Department of Agriculture and U.S. Department of the Interior Joint Workshop on declining pollinators, 27-28 May 1999, Logan, Utah Report of the U.S. Department of Agriculture and U.S. Department of the Interior Joint Workshop on declining pollinators, 27-28 May 1999, Logan, Utah
No abstract available.
Authors
Vincent J. Tepedino, Howard S. Ginsberg
Host selection in the forest interior: cowbirds target ground-nesting species Host selection in the forest interior: cowbirds target ground-nesting species
We investigated patterns of cowbird host selection in a large (1300 ha), unfragmented forest in eastern New York in 1992-3 to determine whether cowbird parasitism rates can be attributed to species-specific traits or to other features associated with nest sites. Nest height was significantly associated with parasitism (P = 0.003) in this community of 23 species (n = 430 nests, 23%...
Authors
D.C. Hahn, Jeff S. Hatfield