Critical tissue residue approach linking accumulated metals in aquatic insects to population and community-level effects
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Abstract
Whole body Zn concentrations in individuals (n = 825) from three aquatic insect taxa (mayflies Rhithrogena spp. and Drunella spp. and the caddisfly Arctopsyche grandis) were used to predict effects on populations and communities (n = 149 samples). Both mayflies accumulated significantly more Zn than the caddisfly. The presence/absence of Drunella spp. most reliably distinguished sites with low and high Zn concentrations; however, population densities of mayflies were more sensitive to increases in accumulated Zn. Critical tissue residues (634 μg/g Zn for Drunella spp. and 267 μg/g Zn for Rhithrogena spp.) caused a 20% reduction in maximum (90th quantile) mayfly densities. These critical tissue residues were associated with exposure to 7.0 and 3.9 μg/L dissolved Zn for Drunella spp. and Rhithrogena spp., respectively. A threshold in a measure of taxonomic completeness (observed/expected) was observed at 5.4 μg/L dissolved Zn. Dissolved Zn concentrations associated with critical tissue residues in mayflies were also associated with adverse effects in the aquatic community as a whole. These effects on populations and communities occurred at Zn concentrations below the U.S. EPA hardness-adjusted continuous chronic criterion.
Suggested Citation
Schmidt, T., Clements, W.H., Zuellig, R.E., Mitchell, K.A., Church, S.E., Wanty, R.B., San Juan, C.A., Adams, M., and Lamothe, P.J., 2011, Critical tissue residue approach linking accumulated metals in aquatic insects to population and community-level effects: Environmental Science & Technology, v. 45, no. 16, p. 7004-7010, https://doi.org/10.1021/es200215s.
ISSN: 1520-5851 (online)
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Critical tissue residue approach linking accumulated metals in aquatic insects to population and community-level effects |
| Series title | Environmental Science & Technology |
| DOI | 10.1021/es200215s |
| Volume | 45 |
| Issue | 16 |
| Publication Date | July 27, 2011 |
| Year Published | 2011 |
| Language | English |
| Publisher | American Chemical Society |
| Publisher location | Washington, D.C. |
| Contributing office(s) | Central Mineral and Environmental Resources Science Center |
| Description | 7 p. |
| First page | 7004 |
| Last page | 7010 |