Screening toxicity evaluation of Wheeler Reservoir sediments using juvenile freshwater mussels (Anodonta imbecillis say) exposed to sediment interstitial water
Reservoir sediments (porewater) near several wastewater outfalls at Decatur, Alabama, were screened for acute (9-day) toxicity to 8-day old freshwater mussels. Sampling locations corresponded to four of five sites previously surveyed by the Alabama Wildlife Federation and Alabama mussel divers. A site located on the opposite (north) overbank where mussels are abundant was chosen as the study control. Reference sediments from an outdoor channel at TVA's Aquatic Research Laboratory (ARL) with flow-through Wheeler Reservoir water and from a downstream (Kentucky) reservoir were included in the study for comparative purposes. Toxicity was observed at two of the Decatur sites, and in the ARL channel. Sediments from the other two Decatur sites, the north overbank (control), and Kentucky Reservoir were not toxic to the test animals. Toxicity at station Alpha and from the ARL channel was correlated with un-ionized ammonia present in porewater during the test. Toxicity at station Delta was above the level explained by the regression model examined for ammonia. The site at Decatur having the greatest toxicity and ammonia concentration (Alpha) was located in the Dry Branch Embayment. Elevated ammonia in sediment collected from ARL was attributed to natural events. 13 refs., 4 figs., 6 tabs.
- Research Organization:
- Tennessee Valley Authority, Knoxville, TN (United States)
- Sponsoring Organization:
- TVA; Tennessee Valley Authority, Knoxville, TN (United States)
- OSTI ID:
- 5478633
- Report Number(s):
- TVA/WR/AB-90/13; ON: DE91015960
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
AMMONIA
TOXICITY
MUSSELS
BIOASSAY
WASTE WATER
ENVIRONMENTAL IMPACTS
WATER POLLUTION
MONITORING
ALABAMA
AQUATIC ECOSYSTEMS
ECOLOGICAL CONCENTRATION
HABITAT
SEDIMENTATION
SEDIMENTS
TENNESSEE VALLEY AUTHORITY
WATER RESERVOIRS
ANIMALS
AQUATIC ORGANISMS
DEVELOPED COUNTRIES
ECOSYSTEMS
FEDERAL REGION IV
HYDRIDES
HYDROGEN COMPOUNDS
INVERTEBRATES
LIQUID WASTES
MOLLUSCS
NATIONAL ORGANIZATIONS
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
NORTH AMERICA
OXYGEN COMPOUNDS
POLLUTION
SURFACE WATERS
US ORGANIZATIONS
USA
WASTES
WATER
540310* - Environment
Aquatic- Basic Studies- (1990-)
540320 - Environment
Aquatic- Chemicals Monitoring & Transport- (1990-)