Determination of growth rate depression of some green algae by atrazine

Journal Article · Tue Dec 01 04:00:00 EST 1987 · Bull. Environ. Contam. Toxicol.; (United States)

DOI:https://doi.org/10.1007/BF01689596· OSTI ID:5295343

Hersh, C M; Crumpton, W G

A common contaminant of surface waters of agricultural regions is the triazine herbicide, atrazine (2-chloro-4-ethylamino-6-isoproplyamino-s-triazine). Atrazine effectively inhibits growth and photosynthesis of most plants, including freshwater algae. Both depression of growth rate and reduced yield have been used as parameters in studies of the effects of atrazine on algal growth. Considerable variation exists among algal toxicity methods despite attempts at standardization. Experimental endpoints range from percent inhibitions to EC50s. Algae from two different Iowa springs were the subjects of a study of naturally occurring atrazine tolerance. The authors report here the results of two aspects of that study: development of a quick method of assessing toxin effects on algal growth, and investigation of a ecologically meaningful endpoint for toxin-growth experiments.

• Research Organization: Iowa State Univ., Ames
• OSTI ID: 5295343
• Journal Information: Bull. Environ. Contam. Toxicol.; (United States), Journal Name: Bull. Environ. Contam. Toxicol.; (United States) Vol. 39:6; ISSN BECTA
• Country of Publication: United States
• Language: English

Related Subjects

560300* -- Chemicals Metabolism & Toxicology
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ALGAE
AZINES
BIOASSAY
CHEMICAL ANALYSIS
CHLAMYDOMONAS
FEDERAL REGION VII
GROWTH
HERBICIDES
HETEROCYCLIC COMPOUNDS
HYDROGEN COMPOUNDS
IOWA
MICROORGANISMS
NORTH AMERICA
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OXYGEN COMPOUNDS
PESTICIDES
PLANT GROWTH
PLANTS
QUANTITATIVE CHEMICAL ANALYSIS
SEDIMENTS
TOXICITY
TRIAZINES
UNICELLULAR ALGAE
USA
WATER