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These publications showcase the significant science conducted in our Science Centers.

Filter Total Items: 16727

Salmonid fish viruses Salmonid fish viruses

No abstract available at this time
Authors
P. E. McAllister

Hydrologic, chemical, and isotopic characterization of two small watersheds on Catoctin Mountain, north-central Maryland, U.S.A. Hydrologic, chemical, and isotopic characterization of two small watersheds on Catoctin Mountain, north-central Maryland, U.S.A.

Two small (100 ha) watersheds located on Catoctin Mountain in north-central Maryland were intensively instrumented in 1990 and have been hydrologically, chemically, and isotopically monitored for 3 years. Dissolved concentrations of major ions (Ca2+, Mg2+, Na+, K+, total AI, CI-, NO3-, SO42- , HCO3-, and SiO2) and stable isotopic (D and 18O) values have been analyzed for most types of...
Authors
Karen C. Rice, O.P. Bricker

Growth, survival and food conversion of Atlantic salmon reared at four different densities with common water quality Growth, survival and food conversion of Atlantic salmon reared at four different densities with common water quality

Our objective was to determine the maximum effective rearing density for Atlantic salmon (Salmo salar) at 17.5°C, a temperature typically used in hatcheries to accelerate growth. We reared 5.8‐g (mean weight) parr for 80 d to final rearing densities of 14–55 kg/m2 (rearing unit bottom area) or 80–310 kg/m3 (rearing unit volume). Weight gain was slightly depressed in fish at a final...
Authors
R. W. Soderberg, J. W. Meade, Lori A. Redell

[Book review] Illustrations of the birds of California, Texas, Oregon, British and Russian America [Book review] Illustrations of the birds of California, Texas, Oregon, British and Russian America

John Cassin was one of the leading American ornithologists of the 19th century. Appointed Honorary Curator of Birds at the Academy of Natural Sciences of Philadelphia in 1842, he built and studied the collections of that institution (although engaged full time in business) until his death in 1869. This book represents perhaps his most important and least well known endeavor.
Authors
Richard C. Banks
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