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Page 5282, results 132026 - 132050

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Biology of larval and metamorphosing sea lampreys, Petromyzon marinus, of the 1960 year class in the Big Garlic River, Michigan, Part II, 1966-72
Patrick J. Manion, Bernard R. Smith
1978, Technical Report 30
The 1960 year class of sea lampreys, Petromyzon marinus, isolated in a tributary of southern Lake Superior continued to yield information on the early life history of the sea lamprey. The larval population persisted and newly metamorphosed individuals were captured from 1966 until the study was terminated in 1972. The...
Movements of walleyes tagged in eastern Lake Erie
David R. Wolfert, Harry D. Van Meter
1978, New York Fish and Game Journal (25) 16-22
In May, October and November of 1968, 2,456 walleyes of various ages were captured, tagged and released in eastern Lake Erie to determine seasonal movement of walleyes in that basin and the degree to which they intermingled with fish of the central and western basins. From 1968 to 1971, 275...
Geomagnetic paleointensities from radiocarbon‐dated lava flows on Hawaii and the question of the Pacific nondipole low
Robert S. Coe, Sherman Gromme, Edward A. Mankinen
1978, Journal of Geophysical Research B: Solid Earth (83) 1740-1756
Radiocarbon ages have been published for nine basaltic lava flows on the island of Hawaii; the ages range from 2600 to somewhat older than 17,900 years B.P. By using the Thelliers' method in vacuum, geomagnetic paleointensity values were obtained from eight of the lavas; the ninth proved unsuitable. The paleointensities...
Fecundity of the bloater (Coregonus hoyi) in Lake Michigan
Lee Emery, Edward H. Brown Jr.
1978, Transactions of the American Fisheries Society (107) 785-789
Using ovaries sampled seasonally from Lake Michigan bloaters in 1968-1969, we determined that one complement or modal group of eggs is produced each year and spawned mainly during January, February, and March. Fecundities estimated for 65 fish taken in October ranged from 3,230 eggs in one medium-size bloater (241 mm...
Habitat use by prairie raccoons during the waterfowl breeding season
E.K. Fritzell
1978, Journal of Wildlife Management (42) 118-127
Mobility and habitat use of raccoons (Procyon lotor) in an intensively farmed area of the prairie pothole region were studied during the waterfowl breeding seasons (April-July) of 1973-75. Over 5700 locations of 30 raccoons were analyzed. Movement patterns varied with sex, age, and reproductive status. Adult males moved regularly throughout...
Evaluating call-count procedures for measuring local mourning dove populations
M.J. Armbruster, T.S. Baskett, W.R. Goforth, K.C. Sadler
1978, Transactions of the Missouri Academy of Science (12) 75-90
Seventy-nine mourning dove call-count runs were made on a 32-km route in Osage County, Missouri, May 1-August 31, 1971 and 1972. Circular study areas, each 61 ha, surrounding stop numbers 4 and 5, were delineated for intensive nest searches and population estimates. Tallies of cooing male doves along the entire...
Changes in submerged aquatic macrophyte populations at the head of Chesapeake Bay, 1958-1975
S. Bayley, Vernon D. Stotts, P. F. Springer, J. Steenis
1978, Estuaries (1) 171-182
Submerged aquatic plant populations in the Susquehanna Flats of the Chesapeake Bay were followed for 18 years. An exotic species, eurasian water milfoil, Myriophyllum spicatum, increased dramatically from 1958 to 1962; at the same time the dominant native species declined. After 1962, milfoil populations declined and the native rooted aquatics...
Aspects of raccoon (Procyon lotor) social organization
E.K. Fritzell
1978, Canadian Journal of Zoology (56) 260-271
Spatial and temporal relationships among members of a raccoon (Procyon lotor) population were studied during spring and summer in east-central North Dakota during 1973–1975. Radio telemetry was used to locate 48 raccoons 6443 times. Livetrapping results and other observations suggested that most raccoons in the area were radio equipped; densities...
The potential source of lead in the Permian Kupferschiefer bed of Europe and some selected Paleozoic mineral deposits in the Federal Republic of Germany
K.H. Wedepohl, M.H. Delevaux, B. R. Doe
1978, Contributions to Mineralogy and Petrology (65) 273-281
New lead isotopic compositions have been measured for Paleozoic bedded and vein ore deposits of Europe by the high precision thermal emission (triple filament) technique. Eleven samples have been analyzed from the Upper Permian Kupferschiefer bed with representatives from Poland to England, three samples from the Middle Devonian Rammelsberg deposit...
Strontium isotopes in basalts from the Pacific Ocean basin
C. E. Hedge
1978, Earth and Planetary Science Letters (38) 88-94
Basalts being erupted in the Pacific Ocean Basin vary in Sr isotopic composition in a simple geographic pattern. 87Sr/86Sr increases away from the East Pacific Rise to very high values for islands in the south-central Pacific. The 87Sr/86Sr variations are almost certainly related...
Mars, highlands-lowlands: Viking contributions to mariner relative age studies
D. H. Scott
1978, Icarus (34) 479-485
Stratigraphic relations between lowland plains and highlands, two major types of Martian geologic-terrain units, were not directly distinguishable on Mariner-9 images. Morphologic characteristics and crater densities suggested that the lava plains beneath their eolian cover were younger than adjacent highland rocks, which form a plateau bounded in many places by...
Induction of auroral zone electric currents within the Alaska pipeline
W.H. Campbell
1978, Pure and Applied Geophysics PAGEOPH (116) 1143-1173
The Alaskar pipeline is a highly conducting anomaly extending 800 miles (1300 km) from about 62?? to 69?? geomagnetic latitude beneath the most active regions of the ionospheric electrojet current. The spectral behavior of the magnetic field from this current was analyzed using data from standard geomagnetic observatories to establish...