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Showing 1 to 13 of 13 for “"Selenastrum capricornutum"”.
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Effects of Methanol, Atrazine, and Copper on the Ultrastructure of Pseudokirchneriella Subcapitata (Selenastrum Capricornutum).
… (Korshikov) Hindák historically referred to as Selenastrum capricornutum Printz were determined following 96 hrs growth in a modified Goram's growth media. Methanol and atrazine inhibited fluorescence readings in the cultures by 50% (IC50) at concentrations of 2% and 82 µg/l respectively. These …
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The use of lipid profiles from immobilised selenastrum capricornutum in the biological surveillance of freshwaters
… use of lipid profiles from the immobilised alga Selenastrum capricornuizim was investigated as a potential indicator of heavy metal pollution in freshwater environments. The toxicity of Cu", Zn 2 and Cd2t on algal growth was determined and the effective concentration inhibiting specific growth …
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Theoretical copper sulfate dosing;the effect of alkalinity and humic acid on ionic copper toxicity to algae
… kill was investigated in laboratory studies with Selenastrum capricornutum and Microcystis aeruginosa. The goal was to give practical information for water treatment plants operators who often must apply copper sulfate for algae control in impoundments. Research focused on the theoretical …
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Algal growth potential and nutrient limitation in the Las Vegas Bay, Lake Mead, Nevada
… of Lake Mead using the standard test organism Selenastrum capricornutum and the Lake phytoplankton. Results for the current nutrient levels in the LV Bay revealed that the AGP of the LV Bay waters, measured by the maximum specific growth rates is limited by phosphorus (P). Both the growth rates …
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The Effects of Diazinon on the Growth Rates and Population Dynamics of Planktonic Algae and the Possible Uptake By Two Algal Species
… was significantly inhibited at 20 and 40 ppm. Selenastrum capricornutum and the blue-green alga, Synechococcus leopoliensis, were also greatly inhibited at 20 ppm. Growth of Selenastrum was completely suppressed at 40 ppm, whereas growth of Synechococcus showed a significant increase in lag …
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Action of Allelochemicals on Algal Growth and Photosystem Ii Efficiency
… efficiency. Chlorella pyrenoidosa Chick and Selenastrum capricornutum Printz were the bioassay species. Fourteen of the 15 allelochemicals investigated resulted in a significant decrease in C. pyrenoidosa growth; 7 caused more than 10% reduction of PSII efficiency. All compounds suppressed …
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A productivity study of the Roanoke River above Niagra Dam
… above the Roanoke wastewater treatment plant for Selenastrum capricornutum and Anabaena flos-aquae, the two algal species used in this study. Maximum specific growth rates tended to increase with increasing phosphorus concentration. The concentration of phosphorus was affected more by point …
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The Eutrophic Status of Ten Central Iowa Lakes
… water sample was innoculated with a test algae, Selenastrum capricornutum, and incubated under set conditions. Cell counts and algal dry weights were determined. The algal dry weights and seasonal changes in lake alkalinity were correlated to the eutrophic status of each lake. Findings. After …
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The Use of Algal Assays to Evaluate Algal Biomass in Regulated Streams
… Rock Reservoirs. Procedure. The test organism, "Selenastrum capricornutum" Printz, was grown in an algal assay which used various additions of nutrient spikes to waters collected above and below each reservoir. Seasonal river samples were collected from December 1978 to October 1979. Growth …
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Chemical limnology, algal growth potential, and nutrient limitation factors of the Upper New River, Virginia, and predictions concerning trophic status for the proposed Blue Ridge reservoirs
… plankton, and a selected, cultured organism (Selenastrum capricornutum). Uptake of ¹⁴C by indigenous periphyton and phytoplankton was greatest in river water cultures enriched with phosphorus. Regardless of whether or not in situ primary productivity is nutrient limited in the upper New River, …
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Development of an Algal Diet for Rearing Juvenile Freshwater Mussels (Unionidae)
… μm), Nannochloropsis oculata (2.8 – 8.1 μm), and Selenastrum capricornutum (3.6 – 8.5 μm) in equal cell densities. The change in relative abundance of each algal species within feeding chambers over a 5 hr feeding trial was used to discern selectivity. At the conclusion of the feeding trials, the …
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The application of algal growth potential techniques to surfactant and zinc toxicity studies
… The algal test organism selected was <i>Selenastrum capricornutum</i> Printz. The surfactants tested included two anionic mixtures (linear tridecyl benzene sulfonate and linear dodecyl benzene sulfonate) and a nonionic surfactant (primary alcohol ethoxylate). The surfactant toxicity …