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Ecological Changes During The Transitional Years Of Final Filling And Full Impoundment 1966 70 Of Lake Oahe An Upper Missouri River Storage Reservoir
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Book Synopsis Ecological Changes During the Transitional Years of Final Filling and Full Impoundment (1966-70) of Lake Oahe, an Upper Missouri River Storage Reservoir by : Fred C. June
Download or read book Ecological Changes During the Transitional Years of Final Filling and Full Impoundment (1966-70) of Lake Oahe, an Upper Missouri River Storage Reservoir written by Fred C. June and published by . This book was released on 1974 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt: Information on ecological changes during the last years of filling (1966-67) and early years of full impoundment (1968-70) of Lake Oahe, a large storage reservoir on the Missouri River, is needed to determine both short- and long-term effects of the water regimen and to interpret changes in fish production. This paper gives synoptic data and trends on water discharge, water level, sedimentation, turbidity, transmissivity, temperature, specific conductance, dissolved oxygen, and plankton. Correlations indicate the nature of some apparent interactions between the plankton and certain of these environmental variables.
Book Synopsis Technical Papers of the U.S. Fish and Wildlife Service by :
Download or read book Technical Papers of the U.S. Fish and Wildlife Service written by and published by . This book was released on 1980 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Abundance, Composition, and Distribution of Crustacean Zooplankton in Relation to Hypolimnetic Oxygen Depletion in West-central Lake Erie by : Roy F. Heberger
Download or read book Abundance, Composition, and Distribution of Crustacean Zooplankton in Relation to Hypolimnetic Oxygen Depletion in West-central Lake Erie written by Roy F. Heberger and published by . This book was released on 1977 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: Samples of crustacean zooplankton were collected monthly in west-central Lake Erie in April and June to October 1968, and in July and August 1970, before and during periods of hypolimnetic dissolved oxygen (DO) depletion. The water column at offshore stations was thermally stratified from June through September 1968, and the hypolimnion contained no DO in mid-August of 1968 or 1970. Composition, abundance, and vertical distribution of crustacean zooplankton changed coincidently with oxygen depletion. Zooplankton composition shifted from mainly cyclopoid copepods in July to mainly cladocerans and copepod nauplii in middle to late August. We believe that mortality of adults and dormancy of copepodites in response to anoxia was the probable reason for the late summer decline of planktonic C. b. thomasi.
Book Synopsis Verification of a Model for Predicting the Effect of Inconstant Temperature on Embryonic Development of Lake Whitefish (Coregonus Clupeaformis) by : William H. Berlin
Download or read book Verification of a Model for Predicting the Effect of Inconstant Temperature on Embryonic Development of Lake Whitefish (Coregonus Clupeaformis) written by William H. Berlin and published by . This book was released on 1977 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: Eggs stripped from lake whitefish spawning in Lake Michigan were incubated in the laboratory at temperatures similar to those on whitefish spawning grounds in Lake Michigan during December-April. Observed times from fertilization to attachment of each of 21 developmental stages were used to test a model that predicts the rate of development at daily fluctuating temperatures; the model relates rate of development for any given stage j, expressed as the reciprocal of time (Rj), to temperature (T). The generalized equation for a developmental stage is Rj = abt ct[squared]. The model was used to predict the effects of small temperature increases (caused by a hypothetical waste-heat discharge) on the rate of development and time of hatching of lake whitefish eggs.
Book Synopsis Clinical Methods for the Assessment of the Effects of Environmental Stress on Fish Health by : Gary A. Wedemeyer
Download or read book Clinical Methods for the Assessment of the Effects of Environmental Stress on Fish Health written by Gary A. Wedemeyer and published by . This book was released on 1977 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: Clinical methods are presented for biological monitoring of hatchery and native fish populations to assess the effects of environmental stress on fish health. The choice of methods is based on the experience of the authors and the judgment of colleagues at fishery laboratories of the U.S. Fish and Wildlife Service. Detailed analysis methods, together with guidelines for sample collection and for the intrepretation of results, are given for tests on blood (cell counts, chloride, cholesterol, clotting time, cortisol, glucose, hematocrit, hemoglobin, lactic acid, methemoglobin, osmolality, and total protein); water (ammonia and nitrate content); and liver and muscle (glycogen content).
Book Synopsis Missouri River Natural Resources Bibliography by : Vincent J. Burke
Download or read book Missouri River Natural Resources Bibliography written by Vincent J. Burke and published by . This book was released on 1997 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Sport Fishery Abstracts written by and published by . This book was released on 1975 with total page 614 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Chemical Forest Fire Retardants by : W. Waynon Johnson
Download or read book Chemical Forest Fire Retardants written by W. Waynon Johnson and published by . This book was released on 1977 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: Toxicities of four chemical forest fire retardants, Fire-Trol 100 and 931 (ammonium sulfate, or polyphosphate with an attapulgit clay thickner) and Phos-Chek 202A and 259 (diammonium phosphate with guar gum derivative thickner) were determined by static and flow-through toxicity tests for fry and fingerling coho salmon and rainbow trout; fingerling fathead minnows, bluegills, and largemouth bass; and mature scuds. In static tests, Phos-Chek formulations were more toxic than either of the Fire-Trol formulations to scuds and all life stages of fish. In salmon and trout, fry were generally more susceptible than fingerlings to all formulations; yolk-sac fry were more susceptible than swim-up friy. Toxicities of all formulations to salmon and trout were similar at 6 to 11 degress centigrade. Un-ionized ammonia is believed to be the most toxic component of thes fire retardants.
Book Synopsis Biology of the Redtail Surfperch (Amphistichus Rhodoterus) from the Central Oregon Coast by : Donald E. Bennett
Download or read book Biology of the Redtail Surfperch (Amphistichus Rhodoterus) from the Central Oregon Coast written by Donald E. Bennett and published by . This book was released on 1977 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: Data on certain aspects of the life history of the redtail surfperch were collected along the central coast of Oregon, from April 1967 through April 1969. Annulus formation occured during February through June, usually earlier in young than in older fish. Mating occurred from late December to early January, and the young were born from July through September. The number of embryos per female ranged from 1 to 39 (mean 13.3) and increased linearly with the length and weight of the females. Food of the fish from the surf zone included crustaceans (by far the most important group in both frequency of occurrence and total volume) and (in order of decreasing importance) fishes, mollusks, and polychaetes. Parasites of the redtail surfperch were immature nematodes (Anisakinae) ; the digenetic trematode Genitocotyle acirra; the monogenetic trematode, Diclidophora sp.; and the copepods, Caligus sp., Clavella sp., and Argulus catostomi.
Book Synopsis Acrolein, Dalapon, Dichlobenil, Diquat, and Endothal by : Leroy C. Folmar
Download or read book Acrolein, Dalapon, Dichlobenil, Diquat, and Endothal written by Leroy C. Folmar and published by . This book was released on 1977 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: Toxicity tables for the herbicides acrolein, dalapon, dichlobenil, diquat, and endothal list the test organisms, types of tests, experimental conditions, and test results. Each table is followed by a list of references. The materials provide a useful source of toxicity data on these herbicides to researchers, regulatory agencies, and manufacturers.
Download or read book FWS/OBS. written by and published by . This book was released on 1977 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Rainbow Trout Growth in Circular Tanks by : James L. Brauhn
Download or read book Rainbow Trout Growth in Circular Tanks written by James L. Brauhn and published by . This book was released on 1976 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: Prediction equations correlating density of fingerling rainbow trout with growth, yield, and food use efficiency indicated that ammonia nitrogen resulting from high fish densities wes responsible for reductions in all three factors. These predictable density-dependent responses present fish-culturists with alternatives of density selection for evaluation and attainment of specific goals. In examples, fish-culturists, by manipulating density, could achieve rapid growth, produce the maximum weight possible, balance yield with cost, optimize fish quality, or combine two or more of these goals.
Book Synopsis Immune Response and Antibody Characterization of the Channel Catfish (Ictalurus Punctatus) to a Naturally Pathogenic Bacterium and Virus by : Charles M. Heartwell
Download or read book Immune Response and Antibody Characterization of the Channel Catfish (Ictalurus Punctatus) to a Naturally Pathogenic Bacterium and Virus written by Charles M. Heartwell and published by . This book was released on 1975 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: Partial antibody characterization indicates that specific channel catfish immunoglobulins are macroglobulins with characteristics like those of most fish immunoglobulins and similar to those of human immunoglobulin-M.
Book Synopsis Ecology of Larval Fishes in Lake Oahe, South Dakota by : William Roland Nelson
Download or read book Ecology of Larval Fishes in Lake Oahe, South Dakota written by William Roland Nelson and published by . This book was released on 1980 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: The time and location of spawning, food and larvae, and habitats used as nursery areas by young-of-the-year fishes were studied from 1972 to 1975 in South Dakota waters of Lake Oahe, a main stem Missouri River reservoir. Sampling locations were in the tributary rivres -- the Grand Moreau, and Cheyenne -- and their embayments. Year-class strength of river-spawning species was strongly correlated with river flow rates during the spawning season. Success of reservoir-spawning species was primarily dependent on above-average water levels, which inundated terrestrial vegetation to provide a substrate for egg deposition and cover for larvae. Preserving adequate streamflow and enhancing reservoir shoreline areas by managing water levels, seeding vegetation, and eliminating grazing alongshore would probably ensure adequate reproduction of most areas.
Book Synopsis Technical Papers of the U.S. Fish and Wildlife Service by :
Download or read book Technical Papers of the U.S. Fish and Wildlife Service written by and published by . This book was released on 1974 with total page 494 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Atlantic Salmon (Salmo Salar) by : Florence T. Wright
Download or read book Atlantic Salmon (Salmo Salar) written by Florence T. Wright and published by . This book was released on 1975 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: North American stocks of Atlantic salmon (Salmo salar) have been declining. One measure being employed to reverse that trend is increased hatchery production. As with husbandry of other animals, intensive rearing is usually associated with higher than normal health risks. Research on diseases of Atlantic salmon can help prevent, reduce, or otherwise control mortality due to problem parasites, infections, and other diseases. For planning of research as well as for diagnostic work, health management, and husbandry, published information on diseases of the Atlantic salmon must be readily available. Inasmuch as the literature is widely scattered, the purpose of this work is to compile a bibliography from international sources on the diseases (detection, diagnosis, identification, and control) of Atlantic salmon. Most of the references are arranged alphabetically by author, either have been annotated by the staff of the Eastern Fish Disease Laboratory, or are abstracts by the author.
Download or read book Research Report written by and published by . This book was released on 1961 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt:
