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The effects of copper, zinc and cadmium on Selenastrum capricornutum Item Info

The algicidal and algistatic effects of copper, zinc and cadmium on Selenastrum capricornutum, a unicellular green alga were analyzed by using a modification of the Algal Assay Procedures Bottle Test. Algicidal concentrations of copper, zinc and cadmium were 0.30, 0.70s and 0.65 mg/1. Treatment of Selenastrum with various concentrations of the metals resulted in similar growth rates characterized by extended lag growth phases. Combinations of copper, zinc and cadmium were similar in toxicity to equal concentrations of zinc. Combinations of copper and cadmium resulted in a greater growth rate than equal concentrations of copper suggesting that cadmium may inhibit copper toxicity. Fork and North Fork of the Coeur d'Alene River where zinc and other metals were in low concentration. However, Selenastrun was not able to grow in water from other parts of the drainage where zinc concentrations were greater than O.O1 mg/1. These observations were consistent with laboratory findings where 0.7 mg/1 zinc was algicidal and 0.12 mg/1 inhibited the growth of Selenastrun.

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Title:
The effects of copper, zinc and cadmium on Selenastrum capricornutum
Authors:
Bartlett, Larry Dennis
Date Created (ISO Standard):
1974-04
Description:
The algicidal and algistatic effects of copper, zinc and cadmium on Selenastrum capricornutum, a unicellular green alga were analyzed by using a modification of the Algal Assay Procedures Bottle Test. Algicidal concentrations of copper, zinc and cadmium were 0.30, 0.70s and 0.65 mg/1. Treatment of Selenastrum with various concentrations of the metals resulted in similar growth rates characterized by extended lag growth phases. Combinations of copper, zinc and cadmium were similar in toxicity to equal concentrations of zinc. Combinations of copper and cadmium resulted in a greater growth rate than equal concentrations of copper suggesting that cadmium may inhibit copper toxicity. Fork and North Fork of the Coeur d'Alene River where zinc and other metals were in low concentration. However, Selenastrun was not able to grow in water from other parts of the drainage where zinc concentrations were greater than O.O1 mg/1. These observations were consistent with laboratory findings where 0.7 mg/1 zinc was algicidal and 0.12 mg/1 inhibited the growth of Selenastrun.
Subjects:
Benthos heavy metals bioassay Algae Selenastrum
Collection:
IWRRI
IWRRI number:
197301
Rights:
Rights to the digital resource are held by the University of Idaho. http://www.uidaho.edu/
Publisher:
University of Idaho
Contributing Institution:
University of Idaho
Type:
Text
Format:
application/pdf
Cataloger:
wbv
Date Digitized:
2012

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Source
Preferred Citation:
"The effects of copper, zinc and cadmium on Selenastrum capricornutum", Idaho Waters Digital Library, University of Idaho Library Digital Collections, https://www.lib.uidaho.edu/digital/iwdl/items/iwdl-bartlett_1974.html
Rights
Rights:
Rights to the digital resource are held by the University of Idaho. http://www.uidaho.edu/
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