Influence of 2,4,6-trichlorophenol and pentachlorophenol on the biota of aquatic systems
Effects of the chemicals 2,4,6-trichlorophenol (TCP) and pentachlorophenol (PCP) on population dynamics of several species were studied in a short-term experiment in separated compartments of an experimental pond. TCP and PCP were applied at single doses of 5 mg/1 and 1 mg/1 respectively in duplicates into compartments of a natural experimental pond. The chemicals showed the following influences on population dynamics and on the physicochemistry of the compartments: 1. A rapid decline of Daphnia concentrations to zero after about three days for PCP and eight days for TCP. 2. A decrease of autotrophic phytoplankton (blue-algae and diatoms). 3. A continuous increase of contamination indicators like flagellates and microorganisms. 4. A significant decrease in oxygen concentration as secondary effect of the changed balance between autotrophic and heterotrophic populations.
- Research Organization:
- Gesellschaft fur Strahlen- und Umweltforschung, Neuherberg, West Germany
- OSTI ID:
- 5528148
- Journal Information:
- Chemosphere; (United States), Journal Name: Chemosphere; (United States) Vol. 11:1; ISSN CHESB
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ALGAE
ANIMALS
AQUATIC ORGANISMS
AROMATICS
ARTHROPODS
BIOLOGICAL EFFECTS
BRANCHIOPODS
CHEMISTRY
CHLORINATED AROMATIC HYDROCARBONS
CRUSTACEANS
DAPHNIA
DIATOMS
ELEMENTS
HALOGENATED AROMATIC HYDROCARBONS
INVERTEBRATES
MICROORGANISMS
NONMETALS
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
OXYGEN
PHYSICAL CHEMISTRY
PHYTOPLANKTON
PLANKTON
PLANTS
PONDS
POPULATION DYNAMICS
SURFACE WATERS
ZOOPLANKTON