Results 171 to 180 of about 3,700 (202)
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Phosphorus-zinc interactive effects on growth by Selenastrum capricornutum (Chlorophyta)
Environmental Science & Technology, 1985Culturing experiments in chemically defined growth media were conducted to observe possible Zn and P interactions on Selenastrum capricornutum Printz growth indexes. Elevated Zn concentrations (7.5 x 10/sup -8/ and 1.5 x 10/sup -7/ M (Zn/sup 2 +/)) were highly detrimental to algal growth, affecting lag, exponential, and stationary growth phases.
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Use of new microbiotests with Daphnia magna and Selenastrum capricornutum immobilized forms
Chemosphere, 1998A preliminary assessment of toxicity to aquatic life of water from rice fields treated with pesticides, and particularly with the herbicides molinate and quinclorac, was performed from June to August 1996 in a rice paddy area integrated in a Natural Reserve.
M J, Cerejeira +2 more
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Sensitivity ofselenastrum capricornutum, Daphnia magnaand submttochondrial particles to tributyltin
Environmental Technology, 1993Abstract The purpose of this study was to evaluate the sensitivity to tributyltin (TBT) of two aquatic organisms belonging to two different levels of the feeding chain: Selenastrum capricornutum alga and Daphnia magna crustacean. The EC50 value at 96 h for Selenastrum capricornutum and the ones at 24 h and 45 h for Daphnia magna with relative ...
MIANA P. +3 more
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Comparative Sensitivity of Selenastrum capricornutum and Lemna minor to Sixteen Herbicides
Archives of Environmental Contamination and Toxicology, 1997Aquatic plant toxicity tests are frequently conducted in environmental risk assessments to determine the potential impacts of contaminants on primary producers. An examination of published plant toxicity data demonstrates that wide differences in sensitivity can occur across phylogenetic groups of plants.
J F, Fairchild +3 more
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Environmental Toxicology and Chemistry, 2006
AbstractUptake of methylmercury (MeHg) by the alga Selenastrum capricornutum was measured in fresh water batch culture bioassays. The concentration of MeHg in the alga increased rapidly (within 15 min), reached a maximum by 6 h, and then declined because of growth dilution.
Patrick R, Gorski +3 more
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AbstractUptake of methylmercury (MeHg) by the alga Selenastrum capricornutum was measured in fresh water batch culture bioassays. The concentration of MeHg in the alga increased rapidly (within 15 min), reached a maximum by 6 h, and then declined because of growth dilution.
Patrick R, Gorski +3 more
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Uptake of lead and its influence in the alga Selenastrum capricornutum printz
Talanta, 1991The influence of nutrient level, hours of fight and the flux of air by volume of solution on uptake of lead has been examined from batch growth experiments carried out with the alga Selenastrum capricornutum Printz. The organic matter released by the alga has been characterized in terms of absorbance at 285 nm, dissolved organic carbon and maximum ...
M L, Gonçalves +4 more
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The phototoxicity of benzo[a]pyrene in the green alga Selenastrum capricornutum
Environmental Research, 1984The effects of selected polycyclic aromatic hydrocarbons (PAHs) on the growth of the green alga Selenastrum capricornutum in three light regimens were examined. In gold fluorescent light, benzo[a]pyrene (BaP) at 12 mg/liter (48 mumole/liter), benz[a]anthracene (BaA) at 40 mg/liter (175 mumole/liter), anthracene (A) at 40 mg/liter (224 mumole/liter ...
T E, Cody, M J, Radike, D, Warshawsky
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Availability of Soil Phosphorus to The Green Algae Selenastrum Capricornutum
1999In freshwater environments, phosphorus (P) is usually the limiting nutrient for algal growth. Erosion of agricultural land forms a major source of P loading in many lakes. The contribution of soil P to the eutrophication of recipient waters depends on the rate at which it is transformed into dissolved orthophosphate, the only P compound that can be ...
Kirsti Krogerus, Petri Ekholm
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Herbicide susceptibility in two green algae, Chlorella vulgaris and Selenastrum capricornutum
Chemosphere, 1993Abstract Responses of four strains belonging to two green algae, Chlorella vulgaris and Selenastrum capricornutum to three herbicides, simetryn, pretilachlor and thiobencarb, were compared, using single species toxicity tests for population growth. There was obvious difference in the susceptibility beween the two species.
F. Kasai, S. Hatakeyama
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Acute toxicity of fatty acids to the freshwater green alga Selenastrum capricornutum
Environmental Toxicology, 2003AbstractThe acute toxicity of fatty acids (C14 to C18) commonly found in wood was determined by the standard algal growth inhibition test using the freshwater green alga Selenastrum capricornutum. Toxicity, quantified as IC50 values, varied depending on the number of total carbons and double bonds.
Yasushi, Kamaya +2 more
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