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Updated: May 10, 2026
16:21
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
Effects of copper on invertebrate-sediment interactions
E R Hunting1, C Mulder, M H S Kraak
1Aquatic Ecology and Ecotoxicology, Institute for Biodiversity and Ecosystem Dynamics (IBED-AEE), University of Amsterdam, Science Park 904, NL-1098 XH Amsterdam, The Netherlands. E.R.Hunting@uva.nl
Environmental Pollution (Barking, Essex : 1987)
|June 11, 2013
Summary
Toxicants like copper can disrupt the link between biodiversity and ecosystem functions. This study shows that copper affects invertebrate bioturbation and decomposition, potentially decoupling these vital ecological processes.
Area of Science:
- Ecotoxicology
- Environmental Science
- Aquatic Ecology
Background:
- Toxicants can disrupt the relationship between biodiversity and ecosystem functions.
- Understanding how specific toxicants impact ecological processes is crucial for environmental risk assessment.
Purpose of the Study:
- To evaluate the effects of copper on invertebrate bioturbation and decomposition.
- To determine the impact of copper on bacterial community metabolism and organic matter breakdown.
Main Methods:
- Microcosm experiments (5-day) using distinct macrofaunal species (Asellus aquaticus, Tubifex spp.).
- Assessed decomposition via dissolved organic carbon (DOC) release.
- Measured bacterial Average Metabolic Response (AMR) and Community Metabolic Diversity (CMD).
- Evaluated bioturbation using sediment redox potential (Eh) profiles.
Main Results:
- Copper's impact on DOC, AMR, and CMD was linked to Tubifex spp. survival.
- Functional parameters were more sensitive to copper than A. aquaticus survival.
- Sub-lethal copper concentrations reduced sediment reworking by A. aquaticus, leading to decreased decomposition.
Conclusions:
- Copper exposure can decouple invertebrate community structure from ecosystem functioning.
- A. aquaticus showed higher sensitivity in functional parameters compared to survival.
- Reduced bioturbation by invertebrates at sub-lethal toxicant levels can impair ecosystem processes like decomposition.
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