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Page 4246, results 106126 - 106150

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Not all publications have extents, not all extents are completely accurate
Survival of cackling Canada geese, 1982-1988
Dennis G. Raveling, James D. Nichols, James E. Hines, David S. Zezulak, Joseph G. Silveira, James C. Johnson, Thomas W. Aldrich, John A. Weldon
1992, Journal of Wildlife Management (56) 63-73
We estimated seasonal and annual survival rates of cackling Canada geese (Branta canadensis minima) for the period 1982-1989 to identify periods of high mortality and assess effects of harvest management decisions. We tested hypotheses about age- and sex specific variation in survival, seasonal variation in survival rates, and variation in...
Causes of mortality in common loons
J. Christian Franson, David J. Cliplef
1992, Conference Paper, Proceedings from the 1992 Conference on the Loon and its Ecosystem: Status, management, and environmental concerns
Summarized are necropsy results from 222 carcasses of Common Loons (Gavia immer) submitted to the National Wildlife Health Research Center from 1976 through 1991.  The carcasses were from 18 states, and 10 or more birds each were from Minnesota, Florida, Virginia, Michigan, Wisconsin, Maine, and North Carolina.  Seventy-three (33%) carcasses...
Tensiometers: Theory, construction, and use
D.I. Stannard
1992, Geotechnical Testing Journal (15) 48-58
Standard tensiometers are used to measure matric potential as low as −870 cm of water in the unsaturated zone by creating a saturated hydraulic link between the soil water and a pressure sensor. The direction and, in some cases, quantity of water flux can be determined using multiple installations.A variety...
Alien plants at Channel Islands National Park
W. L. Halvorson
C.P. Stone, C. W. Smith, J.T. Tunison, editor(s)
1992, Book chapter, Alien plant invasions in native ecosystems of Hawai'i: Management and research.
No abstract available at this time...
Techniques for estimating 7-day, 10-year low-flow characteristics for ungaged sites on streams in Mississippi
Pamela A. Telis
1992, Water-Resources Investigations Report 91-4130
Mississippi State water laws require that the 7-day, 10-year low-flow characteristic (7Q10) of streams be used as a criterion for issuing wastedischarge permits to dischargers to streams and for limiting withdrawals of water from streams. This report presents techniques for estimating the 7Q10 for ungaged sites on streams in Mississippi...
Methanogenic biodegradation of creosote contaminants in natural and simulated ground-water ecosystems
E. Michael Godsy, Donald Goerlitz, Dunja Grbic-Galic
1992, Ground Water (30) 232-242
Wastes from a wood preserving plant in Pensacola, Florida have contaminated the near‐surface sand‐and‐gravel aquifer with creosote‐derived compounds and pentachlorophenol. Contamination resulted from the discharge of plant waste waters to and subsequent seepage from unlined surface impoundments that were in direct hydraulic contact with the ground water. Two distinct phases...
Nitrate is a preferred electron acceptor for growth of freshwater selenate-respiring bacteria
Nisan A. Steinberg, Jodi Switzer Blum, Lawrence Hochstein, Ronald S. Oremland
1992, Applied and Environmental Microbiology (58) 426-428
An anaerobic, freshwater enrichment grew with either nitrate or selenate as an electron acceptor. With both ions present, nitrate reduction preceded selenate reduction. An isolate from the enrichment grew on either ion, but the presence of nitrate precluded the reduction of selenate. Stock cultures of denitrifiers grew anaerobically on nitrate...
Sedimentary history of the Tethyan margins of eastern Gondwana during the Mesozoic
James G. Ogg, Felix Gradstein, Julie A. Dumoulin, Massimo Sarti, Paul Brown
1992, Book chapter, Geophysical Monograph Series, Volume 70: Synthesis of results from scientific drilling in the Indian Ocean
A composite Mesozoic geological history for the Gondwana margins to the Eastern Tethys Ocean can be assembled from stratigraphic successions on the Australian and Himalayan margins and from drill sites of Ocean Drilling Program Legs 122 and 123. During the Triassic, this region drifted northwards, entering tropical paleolatitudes during the...
Ruffe, Gymnocephalus cernuus: Newly introduced in North America
Dennis M. Pratt, William H. Blust, James H. Selgeby
1992, Canadian Journal of Fisheries and Aquatic Sciences (49) 1616-1618
The Eurasian ruffe, Gymnocephalus cernuus, was collected from the lower St. Louis River, Lake Superior's westernmost tributary, in late summer 1987. This is the first known occurrence of the ruffe in North America. The likely vector for this species was ballast water of a transoceanic vessel dumped into the international port...
Acoustics as a tool for the assessment of Great Lakes forage fishes
Ray L. Argyle
1992, Fisheries Research (14) 179-196
Sharp reductions in forage fish populations in Lake Michigan have raised concerns about the continued ability of the forage stocks to support large populations of lake trout and other salmonid predators. There was a need for a more comprehensive and accurate estimate of forage fish abundance and distribution to...