Related Experiment Video
Updated: May 21, 2026

Quantifying Fish Swimming Behavior in Response to Acute Exposure of Aqueous Copper Using Computer Assisted Video and Digital Image Analysis
Published on: February 26, 2016
Interactive effects of phosphorus and copper on Hyalella azteca via periphyton in aquatic ecosystems
Miling Li1, David M Costello, G Allen Burton
1School of Natural Resources and Environment, University of Michigan, Ann Arbor, MI 48105, USA. milingli@hsph.harvard.edu
Abstract:
This research examined the interaction between dissolved copper and phosphorus, with respect to their effects on the freshwater amphipod Hyalella azteca feeding on periphyton. Field-collected periphyton communities were exposed to different nutrient and metal conditions in indoor recirculating streams. H. azteca were then exposed to water and periphyton from these streams. There was rapid Cu accumulation by periphyton but the total Cu concentration of periphyton was not directly related to dissolved P. In terms of H. azteca growth, an interactive effect was found between Cu and P as growth was reduced more than expected in the low Cu-high P treatment. Our data suggest that eutrophic conditions result in greater Cu toxicity to benthic macroinvertebrates at lower metal concentrations, likely due to higher assimilation efficiency of dietary Cu from periphyton incubated under eutrophic conditions. These results imply that non-additive interactions between multiple stressors may cause ecosystem effects as detected in standard laboratory bioassays conducted under controlled conditions.
Related Concept Videos
The Phosphorus Cycle
Acid Mine Drainage
Introduction to Electrolytes
Role of Sodium
One...
Phosphoinositides and PIPs
Different phosphoinositides are synthesized and recruited on the cytosolic face of the plasma membrane. The localization of specific phosphoinositides concentrated in separate membrane...
Freshwater Microbial Ecology
Marine Microbial Ecology

