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- Title
Classifying probabilities of acute toxicity in marine sediments withempirically derived sediment quality guidelines
- Authors
Severn, Corinne G.; Long, Edward R.; Hong, Carolyn B.; MacDonald, Donald D.
- Abstract
Matching, marine sediment chemistry, and toxicity data (n = 1,513), compiled from three studies conducted in the United States, were analyzed to determine both the frequency of acute toxicity to amphipods and average percentage survival in laboratory bioassays within ranges in toxicant concentrations. We determined that the probability of observing acute toxicity was relatively low (< 10%) and that average control-adjusted survival equaled or exceeded 92% in samples in which sediment quality guidelines were not exceeded. Both the incidence of toxicity increased and average survival decreased as chemical concentrations increased relative to the guidelines. In sediments with highestcontaminant concentrations, 73 to 83% of the samples were highly toxic, and average control-adjusted amphipod survival was 37 to 46%, Results of this study confirm that the relationships between sediment chemical concentrations and toxicity reported in a previous study were robust. Further, they indicate that numerical guidelines for saltwater sediments can be used to estimate the probability of observing toxic effects in acute amphipod tests.
- Subjects
CLASSIFICATION; SOIL chemistry; TOXICOLOGY
- Publication
Environmental Toxicology & Chemistry, 2000, Vol 19, Issue 10, p2598
- ISSN
0730-7268
- Publication type
Article