Bioaccumulation of heavy metals by benthic invertebrates at the Arkansas River, Colorado
Journal Article
·
· Environmental Toxicology and Chemistry; (United States)
- Colorado State Univ., Fort Collins, CO (United States). Dept. of Fisheries and Wildlife Biology
A one-year biomonitoring study was conducted to determine the extent of metal contamination (Cd, Cu, and Zn) in a benthic community from the Arkansas River (CO), a subalpine stream impacted by discharges from historic mining operations. Elevated concentrations of metals in water were paralleled by higher concentrations in benthic organisms. Significant differences (p < 0.05) in metal concentrations in aufwuchs and benthic macroinvertebrates among upstream (reference) and downstream stations were observed. Metal concentration in aufwuchs and benthic invertebrates remained elevated at some downstream stations, despite decreases in water concentrations. Time of year and functional group contributed to the variation in metal bioaccumulation in benthic macroinvertebrates. Monitoring metal concentrations in aquatic macroinvertebrates was a better indicator of metal bioavailability in the Arkansas River than ambient (water) metal concentrations.
- OSTI ID:
- 7273383
- Journal Information:
- Environmental Toxicology and Chemistry; (United States), Journal Name: Environmental Toxicology and Chemistry; (United States) Vol. 12:8; ISSN ETOCDK; ISSN 0730-7268
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
54 ENVIRONMENTAL SCIENCES
540320* -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (1990-)
560300 -- Chemicals Metabolism & Toxicology
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ANIMALS
AQUATIC ORGANISMS
ARKANSAS RIVER
AUFWUCHS
BIOLOGICAL ACCUMULATION
BIOLOGICAL INDICATORS
CADMIUM
COLORADO
COPPER
DEVELOPED COUNTRIES
ELEMENTS
INVERTEBRATES
METALS
NORTH AMERICA
POLLUTION
RIVERS
SENSITIVITY
STREAMS
SURFACE WATERS
TRANSITION ELEMENTS
USA
WATER POLLUTION
ZINC
540320* -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (1990-)
560300 -- Chemicals Metabolism & Toxicology
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ANIMALS
AQUATIC ORGANISMS
ARKANSAS RIVER
AUFWUCHS
BIOLOGICAL ACCUMULATION
BIOLOGICAL INDICATORS
CADMIUM
COLORADO
COPPER
DEVELOPED COUNTRIES
ELEMENTS
INVERTEBRATES
METALS
NORTH AMERICA
POLLUTION
RIVERS
SENSITIVITY
STREAMS
SURFACE WATERS
TRANSITION ELEMENTS
USA
WATER POLLUTION
ZINC