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- Author:
- Ishida, B.K.; Bartley, G.E.
- Source:
- Guide to nutritional supplements / editor, Benjamin Caballero pp. -
- Subject:
- vitamin metabolism; algae; photochemistry; structure-activity relationships; hydrophobicity; tomatoes; retinol-binding protein; electrochemistry; secondary metabolites; dietary nutrient sources; nutrient transport; eukaryotic cells; isomers; storage quality; oxidative stability; intestinal absorption; antioxidant activity; vitamin A; Solanum lycopersicum var. lycopersicum; isomerization; nutrient availability; biochemical pathways; free radical scavengers; mutants; plant-based foods; chemical constituents of plants; provitamins
- Handle:
- 10113/38184
- Author:
- Roy E. Cameron; Wallace H. Fuller
- Source:
- Soil Science Society of America journal 1960 v.24 no.5 pp. 353-356
- ISSN:
- 0361-5995
- Subject:
- Anabaena; Azotobacter; Nostoc; Scytonema; algae; carbon; cultivation area; lichen crusts; mixed culture; nitrogen; nitrogen fixation; soil sampling; subsurface soil layers; Arizona
- Abstract:
- ... Algal and lichen crusts and subsurface soil samples were collected from virgin and cultivated areas and analyzed for nitrogen and carbon. These crusts were incubated in the laboratory to determine if nitrogen could be fixed with time under the conditions stated. Algae isolated from the crusts also were tested for nitrogen-fixing ability and quantitative information was obtained for some species in ...
- DOI:
- 10.2136/sssaj1960.03615995002400050015x
- https://doi.org/10.2136/sssaj1960.03615995002400050015x
- Author:
- J. W. Rouatt; H. Katznelson; T. M. B. Payne
- Source:
- Soil Science Society of America journal 1960 v.24 no.4 pp. 271-273
- ISSN:
- 0361-5995
- Subject:
- Actinobacteria; Azotobacter; Protozoa; algae; amino acids; anaerobes; barley; cellulose; crops; denitrifying bacteria; rhizosphere; roots; soil; soybeans; spores; t-test; wheat; yeasts
- Abstract:
- ... The paired t-test was used to analyze the results of a microbiological study of soil on the surface of plant roots and soil apart from the roots. The increase in the numbers of bacteria, actinomycetes, fungi and protozoa in the rhizosphere soil of wheat was highly significant as was the increased incidence of ammonifying and denitrifying bacteria and “radiobacter” types. Anaerobes and aerobic cell ...
- DOI:
- 10.2136/sssaj1960.03615995002400040017x
- https://doi.org/10.2136/sssaj1960.03615995002400040017x
- Author:
- Hugh Popenoe; Charles F. Eno
- Source:
- Soil Science Society of America journal 1962 v.26 no.2 pp. 164-167
- ISSN:
- 0361-5995
- Subject:
- Nematoda; algae; bacteria; carbon dioxide; carbon dioxide production; fungi; gamma radiation; irradiation; nitrates; sand; soil; sulfates; sulfur
- Abstract:
- ... Arredondo fine sand was exposed to gamma radiation from a cobalt⁶⁰ source at doses of 1, 4, 16, 32, 64, 256, 512, 1024, and 2048 kiloroentgens (kr.). Percentage survival of fungi and bacteria decreased with each increase in radiation dose to < 4% at 1024 kr. Algae were not as drastically reduced as bacteria and fungi: some survived at 2048 kr. and greatest reduction occurred above 64 kr. A few nem ...
- DOI:
- 10.2136/sssaj1962.03615995002600020020x
- https://doi.org/10.2136/sssaj1962.03615995002600020020x
- Author:
- C. James Conner; A.S. Cooper; W.A. Reeves; B.A. Trask
- Source:
- Textile research journal 1964 v.34 no.4 pp. 347-357
- ISSN:
- 0040-5175
- Subject:
- acetates; algae; ammonium carbonate; anti-infective agents; aqueous solutions; borates; copper; cotton; cotton fabric; drying; durability; leaching; mildews; odors; organometallic compounds; soil; solubilization; temperature; textile fibers; water solubility; zirconium; zirconium oxide
- Abstract:
- ... New antimicrobial agents suitable for use on cotton fabrics have been made by reacting certain zirconium compounds with inorganic and organometallic compounds. Several zirconium compounds have been examined for this purpose, but most of the research has been done with zirconyl acetate and zirconyl ammonium carbonate. Both of these water-soluble zirconium compounds have been found to solubilize a n ...
- DOI:
- 10.1177/004051756403400411
- https://doi.org/10.1177/004051756403400411
- Author:
- Vernon W. Proctor; Charles R. Malone
- Source:
- Ecology 1965 v.46 no.5 pp. 728-729
- ISSN:
- 0012-9658
- Subject:
- Crustacea; algae; feces; freshwater; intestines; viability; waterfowl
- Abstract:
- ... Viable disseminules of freshwater algae and crustaceans were recovered from feces of representatives of three orders of birds in addition to waterfowl. This indicates that dispersal of small aquatic organisms via the avian intestinal tract can occur in diverse groups of birds. Because of difference in effects upon the viability of disseminules, some birds are probably better suited as agents of di ...
- DOI:
- 10.2307/1935013
- https://doi.org/10.2307/1935013
- Author:
- H. L. Mathews; G. W. Prescott; S. S. Obenshain
- Source:
- Soil Science Society of America journal 1965 v.29 no.6 pp. 729-732
- ISSN:
- 0361-5995
- Subject:
- algae; alluvial soils; calcareous soils; calcium; calcium carbonate; carbon dioxide; groundwater; limestone; magnesium; rain; rivers; springs (water); stream channels; valleys; Virginia
- Abstract:
- ... A study was made to determine the origin of the calcareous material found in certain floodplain soils of the limestone valleys of Virginia. The CaCO₃ in these soils was derived from the highly fractured and faulted limestone underlying the area. Groundwater, high in dissolved CO₂, percolated through the crushed limestone, dissolving an appreciable amount of Ca and Mg carbonate. This water issued a ...
- DOI:
- 10.2136/sssaj1965.03615995002900060036x
- https://doi.org/10.2136/sssaj1965.03615995002900060036x
8. Color Change and the Ecology of the Marine Isopod Idothea (Pentidothea) Montereyensis Maloney, 1933
- Author:
- Welton L. Lee
- Source:
- Ecology 1966 v.47 no.6 pp. 930-941
- ISSN:
- 0012-9658
- Subject:
- Rhodophyta; Zostera marina; adults; algae; animals; coasts; color; colored varieties; habitats; littoral zone; marine science; predators; summer; winter; North America
- Abstract:
- ... The isopod Idothea montereyensis lives on marine plants in the rocky intertidal zone on the west coast of North America. It occurs in red, green and brownish color varieties which usually match the color of the plant on which the isopod is found, and individuals are capable of undergoing color change when transferred to plants of another color. A population of Idothea montereyensis occurs on the e ...
- DOI:
- 10.2307/1935640
- https://doi.org/10.2307/1935640
- Author:
- H. F. Mayland; T. H. McIntosh
- Source:
- Soil Science Society of America journal 1966 v.30 no.5 pp. 606-609
- ISSN:
- 0361-5995
- Subject:
- algae; amino acids; ammonium; hexosamines; nitrogen; total nitrogen
- Abstract:
- ... Fixation of isotopically labeled N₂ by desert algal crust organisms was very rapid after initial wetting of crusts. After 8 days of incubation, a steady rate of fixation was reached which continued for 152 days. The initial distribution of N was 4% extracellular NH₄, 16% acid-hydrolyzable NH₄ (included extracellular NH₄), 41% α amino acid, 4% hexosamine, 29% acid-hydrolyzable but unidentified, and ...
- DOI:
- 10.2136/sssaj1966.03615995003000050021x
- https://doi.org/10.2136/sssaj1966.03615995003000050021x
- Author:
- H. F. Mayland; T. H. McIntosh; W. H. Fuller
- Source:
- Soil Science Society of America journal 1966 v.30 no.1 pp. 56-60
- ISSN:
- 0361-5995
- Subject:
- algae; ammonium nitrogen; excretion; grasses; isotopes; isotopic enrichment; livestock; nitrogen; nitrogen fixation; seedlings; semiarid soils; total nitrogen
- Abstract:
- ... Semiarid desert algal crust organisms were found to fix N₂ when exposed to an atomosphere which contained isotopically enriched N. Significant quantities of the N isotope were detected in the total crust N after 3 days of incubation under field-simulated conditions. Net N₂ fixation rates by the algal crust organisms were 0.16 and 0.10 lb of N/acre of crust surface per day under continuous wet and ...
- DOI:
- 10.2136/sssaj1966.03615995003000010022x
- https://doi.org/10.2136/sssaj1966.03615995003000010022x
11. Survival and Reproduction of Two Species of Earthworm and a Rotifer Following Herbicide Treatments
- Author:
- John C. Caseley; Charles F. Eno
- Source:
- Soil Science Society of America journal 1966 v.30 no.3 pp. 346-350
- ISSN:
- 0361-5995
- Subject:
- Eudrilus eugeniae; Lumbricus terrestris; Rotifera; algae; animal reproduction; dalapon; diet; earthworms; eggs; food chain; herbicide resistance; sand; soil; toxicity
- Abstract:
- ... The survival and reproduction of Lumbricus terrestris Linné (Red Wiggler) and Eudrilus eugeniae Grinsburg, 1866 (African Giant) earthworms were followed in Everglades muck and Arredondo loamy fine sand treated with 11 herbicides at five rates. Generally, E. eugeniae were more susceptible to the herbicides than L. terrestris and both suffered greater damage in Arredondo fine sand than in Everglades ...
- DOI:
- 10.2136/sssaj1966.03615995003000030015x
- https://doi.org/10.2136/sssaj1966.03615995003000030015x
- Author:
- Richard R. Wright; John E. Hobbie
- Source:
- Ecology 1966 v.47 no.3 pp. 447-464
- ISSN:
- 0012-9658
- Subject:
- acetates; algae; aquatic ecosystems; bacteria; bioassays; biomass; diffusivity; filtration; glucose; laboratory experimentation; lakes; solutes; Sweden
- Abstract:
- ... New methods employing C¹4—Labeled organic compounds measure the uptake of organic solutes by planktonic microorganisms. By testing uptake over a wide range of substrate concentrations, two separate mechanisms can be differentiated and their kinetics measured. Using filtration and evidence from experiments with laboratory cultures of planktonic bacteria and algae, specific transport systems effecti ...
- DOI:
- 10.2307/1932984
- https://doi.org/10.2307/1932984
- Author:
- Eville Gorham; Jon Sanger
- Source:
- Ecology 1967 v.48 no.3 pp. 492-494
- ISSN:
- 0012-9658
- Subject:
- aerial parts; algae; flora; lakes; macrophytes; organic matter; sediments; swamp soils; swamps; woodland soils; woodlands
- Abstract:
- ... Caloric values were determined on an ash—free dry—weight basis for organic matter in woodland, swamp, and lake soils and in certain plants. Mean values in kilocalories per gram are: 11 woodland soils, 5.04; 20 swamp soils, 4.87; 9 lake sediments, 5.24; 10 tree—leaf samples, 5.22; 9 samples of aboveground parts of the ground flora, 4.65; 4 aquatic algae, 5.23; and 4 aquatic macrophytes, 4.31. ...
- DOI:
- 10.2307/1932684
- https://doi.org/10.2307/1932684
- Author:
- Clyde L. Porter Jr.
- Source:
- Ecology 1967 v.48 no.6 pp. 937-942
- ISSN:
- 0012-9658
- Subject:
- Andropogon; Cyperus; Muhlenbergia capillaris; algae; dry season; flooded conditions; flora; hurricanes; marl; organic matter; organic production; soil; temperature; wet season; Florida
- Abstract:
- ... The vascular flora of a seasonally wet marl prairie in subtropical Florida was composed of 39 species, the most important of which were Muhlenbergia capillaris var. filipes, Mariscus jamaicensis, and Andropogon rhizomatus. These three species contributed greatly to the standing crop of live material which, except immediately following the September 1965 hurricane, was in excess of 107 g/m² through ...
- DOI:
- 10.2307/1934537
- https://doi.org/10.2307/1934537
- Author:
- Vernon W. Proctor; Charles R. Malone; Victor L. DeVlaming
- Source:
- Ecology 1967 v.48 no.4 pp. 672-676
- ISSN:
- 0012-9658
- Subject:
- Anas platyrhynchos; Artemia salina; Chara; Charadrius; adults; algae; ducks; eggs; feces; intestines; oospores; vegetative cells; viability
- Abstract:
- ... Earlier studies have shown that viable disseminules of a variety of aquatic, organisms my be recovered from the feces of birds. The present report is concerned primarily with the maximum length of time that vegetative cells and spores of algae, various crustacean eggs, and living adult ostracods can be retained within the divestive tracts of Killdeer (Charadrius vociferus) and, to a lesser extent, ...
- DOI:
- 10.2307/1936517
- https://doi.org/10.2307/1936517
- Author:
- Charles E. King
- Source:
- Ecology 1967 v.48 no.1 pp. 111-128
- ISSN:
- 0012-9658
- Subject:
- Chlamydomonas reinhardtii; Euglena gracilis; Rotifera; algae; animals; clones; death; eggs; females; food intake; foods; oviposition; parents; parthenogenesis; population density; population growth; survival rate
- Abstract:
- ... Two clones of the rotifer Euchlanis dilatata were derived from a single parent by parthenogenesis so that in succeeding generations the individuals of one clone (the young orthoclone) were always derived from young parents and those of the other (the old orthoclone) from old parents. These clones were fed four different food concentrations (1.6, 4.9, 16.4, and 49.2 mg/ml) of three different algal ...
- DOI:
- 10.2307/1933423
- https://doi.org/10.2307/1933423
- Author:
- Ted C. Frantz; Almo J. Cordone
- Source:
- Ecology 1967 v.48 no.5 pp. 709-714
- ISSN:
- 0012-9658
- Subject:
- Chara; algae; aquatic plants; lakes; mosses and liverworts; California; Nevada
- Abstract:
- ... Deepwater macroscopic hydrophytes in Lake Tahoe were found to a depth of 500 ft. They consist of algae, mosses and liverworts. Most were concentrated at depths from 200 to 350 ft. Only Chara occassionally invaded areas as shallow as 20 ft. Other deepwater hydrophytes were restricted to depths below 50 ft. ...
- DOI:
- 10.2307/1933727
- https://doi.org/10.2307/1933727
- Author:
- Donald L. Revill; Kenneth W. Stewart; Harold E. Schlichting Jr.
- Source:
- Ecology 1967 v.48 no.6 pp. 1023-1027
- ISSN:
- 0012-9658
- Subject:
- Alternaria; Anabaena; Chaoborus; Chlamydomonas; Chlorella; Chlorococcum; Chroococcus; Culicidae; Phormidium; Protococcus; Protozoa; Tipula; algae; crane flies; midges; mosses and liverworts; protonemata; soil water
- Abstract:
- ... Four species of aquatic Diptera, Tipula triplex Walker (Tipulidae), Bittacomorpha clavipes (F.) (Ptychopteridae), Chaoborus punctipennis (Say) (Culicidae), and Tendipes sp. (Tendipedidae), were collected aseptically and used to inoculate sterile soil—water extract. Twenty—one genera of algae, five Protozoa, a moss protonema and Alternaria were identified in the 51 cultured washings.Comparisons by ...
- DOI:
- 10.2307/1934558
- https://doi.org/10.2307/1934558
- Author:
- Ernest C. Neal; Bernard C. Patten; Charles E. DePoe
- Source:
- Ecology 1967 v.48 no.6 pp. 918-924
- ISSN:
- 0012-9658
- Subject:
- Bacillariophyceae; Cyanobacteria; algae; animals; bacterial colonization; biomass; green leafy vegetables; isotopes; lakes; microorganisms; periphyton; polyethylene; radionuclides; vitamin B12
- Abstract:
- ... Periphyton colonization, biomass development and radionuclide accumulation were studied by suspending polyethylene tape vertically for up to 9 weeks in a radioactively contaminated lake. After 2 weeks biomass growth was nearly complete on the upper tape sections, but full development on the deeper sections took longer. Maximum biomass occurred at 25.4—50.8 cm (6—20 in.) depth. Bacterial colonizati ...
- DOI:
- 10.2307/1934534
- https://doi.org/10.2307/1934534
- Author:
- John Caperon
- Source:
- Ecology 1967 v.48 no.5 pp. 715-722
- ISSN:
- 0012-9658
- Subject:
- Isochrysis galbana; adsorption; algae; chlorophyll; equations; food availability; growth models; light intensity; microorganisms; nitrates; phytoplankton; population density; population growth
- Abstract:
- ... It is suggested that an hyperbolic equation of the form (1/n) (dn/dt) = rb/(b + A) where n is the population density, b the concentration of limiting food supply and A and r are constants, is widely applicable as a density—dependent growth model. An attempt is madse to state explicitly the conditions under which it would apply. A consideration of the kinetics of food uptake leads to the interpreta ...
- DOI:
- 10.2307/1933728
- https://doi.org/10.2307/1933728