Publications
These publications showcase the significant science conducted in our Science Centers.
Filter Total Items: 16733
Point count length and detection of forest neotropical migrant birds Point count length and detection of forest neotropical migrant birds
No abstract available at this time
Authors
D.K. Dawson, D. R. Smith, C.S. Robbins
A landscape-level analysis of marbled murrelet habitat in western Washington A landscape-level analysis of marbled murrelet habitat in western Washington
No abstract available at this time
Authors
M.G. Raphael, J.A. Young, B.M. Galleher
Glacial removal of late Cenozoic subglacially emplaced volcanic edifices by the West Antarctic ice sheet Glacial removal of late Cenozoic subglacially emplaced volcanic edifices by the West Antarctic ice sheet
Local maxima of the horizontal gradient of pseudogravity from closely spaced aeromagnetic surveys over the Ross Sea, northwestern Ross Ice Shelf, and the West Antarctic ice sheet, reveal a linear magnetic rift fabric and numerous subcircular, high-amplitude anomalies. Geophysical data indicate two or three youthful volcanic edifices at widely separated areas beneath the sea and ice cover...
Authors
John C. Behrendt, D. D. Blankenship, D. Damaske, A. K. Cooper
Influence of tank design and hydraulic loading on the behavior, growth, and metabolism of rainbow trout (Oncorhynchus mykiss) Influence of tank design and hydraulic loading on the behavior, growth, and metabolism of rainbow trout (Oncorhynchus mykiss)
Subadult rainbow trout (Oncorhynchus mykiss) stocked at 48 kg/m3 (3 lb/ft3) were subjected to treatments of tank design (rectangular plug flow, circular, and cylindrical cross flow) and water exchange rate (1·5 and 2·5 exchanges/h) to determine their effects on fish behavior, growth, and metabolism. Ambient light levels and current velocities were also measured in each of three tank...
Authors
Robert M. Ross, Barnaby J. Watten, W. F. Krise, M. N. DiLauro, R. W. Soderberg
U-Pb ages of metarhyolites of the Catoctin and Mount Rogers formations, central and southern Appalachians: Evidence for two pulses of Iapetan rifting U-Pb ages of metarhyolites of the Catoctin and Mount Rogers formations, central and southern Appalachians: Evidence for two pulses of Iapetan rifting
No abstract available.
Authors
John N. Aleinikoff, Robert E. Zartman, Marianne Walter, Douglas W. Rankin, Peter T. Lyttle, William C. Burton
Can otolith microchemistry chart patterns of migration and habitat utilization in anadromous fishes? Can otolith microchemistry chart patterns of migration and habitat utilization in anadromous fishes?
Seasonal and ontogenetic patterns in estuarine and coastal migrations of anadromous fish species have important consequences to their survival, growth, recruitment, and reproduction. We tested the hypothesis that otolith (sagitta) microchemistry can document the environmental history of individual fish across an estuarine salinity gradient. Juvenile striped bass, Morone saxatilis...
Authors
D.H. Secor, A. Henderson-Arzapalo, P.M. Piccoli
Silurian tectonic history of Penobscot Bay region, Maine Silurian tectonic history of Penobscot Bay region, Maine
Early Paleozoic amalgamation of composite terranes was contemporaneous at widely separated regions that were later accreted to either ancestral North America or to Gondwana as those two continents approached each other. Peri-Gondwanan terranes formed from Late Cambrian and Early Ordovician rocks were amalgamated in the Late Ordovician and Early Silurian to form the Salinic orogenic belt...
Authors
D. B. Stewart, J. D. Unger, D. R. Hutchinson
Growth and mortaility rates of larval American shad, Alosa sapidissima, at different salinities Growth and mortaility rates of larval American shad, Alosa sapidissima, at different salinities
The tolerance of post yolk-sac American shad Alosa sapidissima larvae to salinities typically seen in estuaries was assessed experimentally. Sixteen-day-old Hudson River (experiment I) and 35-d-old Delaware River (experiment II) larvae were held for 8 d and 9 d respectively in low (0–1‰), medium (9–11‰), and highly (19–20‰) brackish water, and mortality and growth rates were measured...
Authors
K.E. Limburg, R. M. Ross
Increased daylength stimulates plasma growth hormone and gill Na+, K+ and -ATPase Atlantic salmon (Salmo salar ) Increased daylength stimulates plasma growth hormone and gill Na+, K+ and -ATPase Atlantic salmon (Salmo salar )
Atlantic salmon juveniles reared at constant temperature (9–10°C) were exposed to four photoperiod treatment and sampled every 2 weeks from January through May. Fish reared under normal photoperiod exhibited eight-and three fold increases in plasma growth hormone and gill Na+, K+-ATPase activity, respectively, between January and April. Fish exposed to abrupt increases in daylength (LD...
Authors
S. D. McCormick, Bjorn Thrandur Bjornsson, M. Sheridan, C. Eilertson, J. B. Carey, M. O'Dea
Immunotoxicology in fish Immunotoxicology in fish
No abstract available at this time
Authors
D. P. Anderson, M.G. Zeeman
Beach erosion and coastal development at Rincón, Puerto Rico Beach erosion and coastal development at Rincón, Puerto Rico
No abstract available.
Authors
E. Robert Thieler, Rafael W. Rodriguez, Milton Carlo
Seasonal cycles of dissolved constituents in streamwater in two forested catchments in the mid-Atlantic region of the eastern U.S.A. Seasonal cycles of dissolved constituents in streamwater in two forested catchments in the mid-Atlantic region of the eastern U.S.A.
Streamwater discharge and chemistry of two small catchments on Catoctin Mountain in north-central Maryland have been monitored since 1982. Repetitive seasonal cycles in stream-water chemistry have been observed each year, along with seasonal cycles in the volume of stream discharge and in groundwater levels. The hypothesis that the observed streamwater chemical cycles are related to...
Authors
Karen C. Rice, Owen P. Bricker