Efficient algal bioassay based on short-term photosynthetic response
Conference
·
OSTI ID:5948558
A procedure is described for measuring effects of toxicants on algal photosynthesis (H/sup 14/CO/sub 3/ uptake) in 4-h experiments. Results for individual aromatic compounds and the waste-soluble fraction (WSF) of a synthetic oil are presented as examples of applications of the bioassay. The toxicity of the WSF varied among the seven algal species tested, and responses of some species were pH-dependent. Data presented here indicate that algal photosynthesis is inhibited at toxicant concentrations similar to those that cause acute effects in aquatic animals. A model of a pelagic ecosystem is used to demonstrate that even temporary (7-d) inhibition of algal photosynthesis can have a measurable impact on other trophic levels, particularly if the other trophic levels are also experiencing toxic effects.
- Research Organization:
- Oak Ridge National Lab., TN (USA)
- DOE Contract Number:
- W-7405-ENG-26
- OSTI ID:
- 5948558
- Report Number(s):
- CONF-8110103-1; ON: DE82002915
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
560303* -- Chemicals Metabolism & Toxicology-- Plants-- (-1987)
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ALGAE
AROMATICS
BIOASSAY
CHEMICAL REACTIONS
DATA
EXPERIMENTAL DATA
FUELS
HYDROCARBONS
INFORMATION
INHIBITION
MATERIALS
NUMERICAL DATA
ORGANIC COMPOUNDS
PHOTOCHEMICAL REACTIONS
PHOTOSYNTHESIS
PLANTS
POLYCYCLIC AROMATIC HYDROCARBONS
SYNTHESIS
SYNTHETIC FUELS
TOXIC MATERIALS
TOXICITY
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ALGAE
AROMATICS
BIOASSAY
CHEMICAL REACTIONS
DATA
EXPERIMENTAL DATA
FUELS
HYDROCARBONS
INFORMATION
INHIBITION
MATERIALS
NUMERICAL DATA
ORGANIC COMPOUNDS
PHOTOCHEMICAL REACTIONS
PHOTOSYNTHESIS
PLANTS
POLYCYCLIC AROMATIC HYDROCARBONS
SYNTHESIS
SYNTHETIC FUELS
TOXIC MATERIALS
TOXICITY