Publications
These publications showcase the significant science conducted in our Science Centers.
Filter Total Items: 16731
Estimating temporary emigration using capture-recapture data with Pollock's robust design Estimating temporary emigration using capture-recapture data with Pollock's robust design
Statistical inference for capture–recapture studies of open animal populations typically relies on the assumption that all emigration from the studied population is permanent. However, there are many instances in which this assumption is unlikely to be met. We define two general models for the process of temporary emigration: completely random and Markovian. We then consider effects of...
Authors
W. L. Kendall, James D. Nichols, James E. Hines
Life history, latitudinal patterns, and status of the shortnose sturgeon, Acipenser brevirostrum Life history, latitudinal patterns, and status of the shortnose sturgeon, Acipenser brevirostrum
Historically, shortnose sturgeon inhabited most major rivers on the Atlantic coast of North America south of the Saint John River, Canada. Today, only 16 populations may remain. Major anthropogenic impacts on shortnose sturgeon are blockage of spawning runs by dams, harvest of adults (bycatch and poaching), dredging of fresh/saltwater riverine reaches, regulation of river flows, and...
Authors
Boyd Kynard
The effect of diet on dorsal fin erosion in steelhead trout (Oncorhynchus mykiss) The effect of diet on dorsal fin erosion in steelhead trout (Oncorhynchus mykiss)
A 2 × 2 factorial experiment of diet type (krill vs. fish meal) and steroid supplementation (0 vs. 30 μg 17α-methyltestosterone kg−) was conducted to determine the effects on dorsal fin erosion in steelhead trout. Triplicate tanks of 250 fry were fed one of the four diets at a rate calculated to produce 115 g fish in 34 weeks. Fish were transferred to larger tanks when mean density index...
Authors
William A. Lellis, Frederic T. Barrows
Evaluation of agricultural best-management practices in the Conestoga River headwaters, Pennsylvania: Hydrology of a small carbonate site near Ephrata, Pennsylvania, prior to implementation of nutrient management Evaluation of agricultural best-management practices in the Conestoga River headwaters, Pennsylvania: Hydrology of a small carbonate site near Ephrata, Pennsylvania, prior to implementation of nutrient management
The U.S. Geological Survey, in cooperation with the U.S. Department of Agriculture and Pennsylvania Department of Environmental Protection, investigated the effects of agricultural best-management practices on water quality in the Conestoga River headwaters watershed. This report describes environmental factors and the surface-water and ground-water quality of one 47.5-acre field site...
Authors
E. H. Koerkle, D. W. Hall, D. W. Risser, P. L. Lietman, D. C. Chichester
Multiresolution convariation among landsat and AVHRR vegetation indices Multiresolution convariation among landsat and AVHRR vegetation indices
No abstract available.
Authors
Lee De Cola
The Spruce Head composite pluton: An example of mafic to silicic Salinian magmatism in coastal Maine, northern Appalachians The Spruce Head composite pluton: An example of mafic to silicic Salinian magmatism in coastal Maine, northern Appalachians
No abstract available.
Authors
Robert A. Ayuso, Joseph G. Arth
Effects of cell diluents on enumeration of viable Renibacterinium salmoninarum Effects of cell diluents on enumeration of viable Renibacterinium salmoninarum
No abstract available at this time
Authors
C. E. Starliper
Evaluation of the genetic diversity of Renibacterinium salmoninarum Evaluation of the genetic diversity of Renibacterinium salmoninarum
No abstract available at this time
Authors
C. E. Starliper
Antimicrobial resistance in Aeromonas salmonicida Antimicrobial resistance in Aeromonas salmonicida
No abstract available at this time
Authors
C. E. Starliper, R.K. Cooper
Susceptibility of salmonid fishes to Renibacterinium salmoninarum Susceptibility of salmonid fishes to Renibacterinium salmoninarum
No abstract available at this time
Authors
C. E. Starliper
Sampling the bacterial flora of freshwater mussels Sampling the bacterial flora of freshwater mussels
No abstract available at this time
Authors
C. E. Starliper
Acid Rain Acid Rain
Acid deposition, or acid rain as it is more commonly referred to, has become a widely publicized environmental issue in the U.S. over the past decade. The term usually conjures up images of fish kills, dying forests, "dead" lakes, and damage to monuments and other historic artifacts. The primary cause of acid deposition is emission of S02 and NOx to the atmosphere during the combustion...
Authors
Owen P. Bricker, Karen C. Rice