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Page 5517, results 137901 - 137925

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Effects of diet on survival and growth of the Atlantic silverside
A.D. Beck, Hugh A. Poston
1980, Progressive Fish-Culturist (42) 138-143
Effects of two live and seven prepared diets on the survival and growth of postlarval and juvenile Atlantic silversides (Menidia menidia) were determined. Two experiments were conducted, one with 23-day-old postlarvae and one with 57-day-old juveniles. In both experiments, growth rate and survival were greatest on the live diet of brine shrimp (Artemia salina) nauplii. Survival was lowest...
Handling as a factor in mortality of trout with or without furunculosis
M.J. Hosmer
1980, Progressive Fish-Culturist (42) 157-159
Mortalities of brook trout (Salvelinus fontinalis), brown trout (Salmo trutta), and rainbow trout (Salmo gairdneri) in 1978 and 1979 were significantly higher in clinically diseased than in subclinically diseased or healthy fish in both years. Mortalities in diseased fish within 24 h after sampling were not statistically different from those in specific-pathogen-free controls; however,...
Oxygen isotopic determinations of sequentially erupted plagioclases in the 1974 magma of Fuego Volcano, Guatemala
W.I. Rose Jr., I. Friedman, L. G. Woodruff
1980, Bulletin Volcanologique (43) 191-194
Plagioclases in the 1974 high-Al basalt from Fuego Volcano have ??O18 values of +6.0 to +8.5 per mil. Meteoric water cannot have played a significant role in Fuego's magma. Large, weakly zone clear phenocrysts had ??O18 values in the accepted mantle range, while patchyzoned and oscillatory-zoned plagioclases inferred to have...
The asiatic clam, Corbicula fluminea (Müller), in the tidal Potomac River, Maryland
Paul V. Dresler, Robert L. Cory
1980, Estuaries (3) 150-151
The Asiatic clam,Corbicula fluminea (Müller), has extended its range to include the tidal fresh-water portion of the Potomac River, Maryland. Though patchily distributed, the clams have attained densities of 665 m−2. Size-class distributions indicate that the clams first appeared in 1975. About 90% of the population belong to year-class I...
Storm runoff as related to urbanization in the Portland, Oregon-Vancouver, Washington Area
Antonius Laenen
1980, Water-Resources Investigations Report 80-689
A series of equations was developed to provide a better method of determining flood frequencies in the Portland-Vancouver urban area than is now available. The resulting regression equations can be used to compute peak discharge and storm runoff with a standard error of estimate of approximately 30 percent. Basins used...
[Book review] Endangered Birds: Management techniques for preserving threatened species
R.C. Erickson
1980, The Auk (97) 209-209
This volume contains the proceedings of a symposium held at the University of Wisconsin-Madison, during 17-20 August 1977. In the words of the book's editor, Stanley Temple, the symposium "offered a unique opportunity for leading scientists from around the world to meet and share their experiences with endangered birds." That...
Estimating the size and trend of the California condor population, 1965-1978
S.R. Wilbur
1980, California Fish and Game (66) 40-48
During 1965-1978, three principal methods were used to measure the size and trend of the California Condor (Gymnogyps californianus) population. An October survey conducted by as many as 136 observers had limited value because daily activity patterns of condors were unpredictable and because analysis of results could not be...
Decline and disappearance of the Dusky Seaside Sparrow from Merritt Island, Florida
P.W. Sykes Jr.
1980, American Birds (34) 728-737
The Dusky Seaside Sparrow, Ammospiza maritima nigrescens, was first discovered by Charles J. Maynard near Salt Lake on the St. Johns River west of Titusville, Brevard County, Florida, on March 17, 1872. Later that spring, Maynard found the sparrow to be quite common in the salt marsh on the Canaveral...