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Effects of a synthetic crude oil on pond benthic insects
AbstractWe describe the effects on pond benthic insects of a synthetic (coal-derived) crude oil at doses equivalent to 375, 75 and 15 ml oil m−3 pond water. Total insect abundance and abundance by taxon, total biomass and biomass by taxon, number of taxa, and species diversity based on abundance and biomass were all used as measures of community-level stress. The highest dose caused immediate and drastic effects, evident in all indices of stress. These effects were observed at concentrations of total phenols and oil:water ratios lower than those found to be toxic in laboratory acute bioassays. Populations of the midge Chironomus decorus in one of the medium dose ponds were stimulated, apparently an indirect effect of toxicity of the oil to the macrophyte Elodea canadensis Three months after the dosing, there was some recovery of the pond insects, even at the highest doses examined. In comparison with indices based solely on numerical abundance, indices of stress incorporating data on biomass of individual organisms did not add appreciably to the understanding of effects.
Effects of a synthetic crude oil on pond benthic insects
AbstractWe describe the effects on pond benthic insects of a synthetic (coal-derived) crude oil at doses equivalent to 375, 75 and 15 ml oil m−3 pond water. Total insect abundance and abundance by taxon, total biomass and biomass by taxon, number of taxa, and species diversity based on abundance and biomass were all used as measures of community-level stress. The highest dose caused immediate and drastic effects, evident in all indices of stress. These effects were observed at concentrations of total phenols and oil:water ratios lower than those found to be toxic in laboratory acute bioassays. Populations of the midge Chironomus decorus in one of the medium dose ponds were stimulated, apparently an indirect effect of toxicity of the oil to the macrophyte Elodea canadensis Three months after the dosing, there was some recovery of the pond insects, even at the highest doses examined. In comparison with indices based solely on numerical abundance, indices of stress incorporating data on biomass of individual organisms did not add appreciably to the understanding of effects.
Effects of a synthetic crude oil on pond benthic insects
Cushman, Robert M. (author) / Goyert, Jonathan C. (author)
Environmental Pollution Series A: Ecological and Biological ; 33 ; 163-186
1984-01-01
24 pages
Article (Journal)
Electronic Resource
English
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