Registration Dossier
Registration Dossier
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EC number: 910-853-9 | CAS number: 8011-63-0
Toxicity to terrestrial plants
Administrative data
- Endpoint:
- toxicity to terrestrial plants
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Already evaluated by the Competent Authorities for Biocides and Existing Substance Regulations.
Data source
Reference
- Reference Type:
- publication
- Title:
- Effect of a copper gradient on plant community structure
- Author:
- Strandberg B., J.A. Axelsen, M.B. Pedersen, J. Jensen and M.J. Attrill
- Year:
- 2 006
- Bibliographic source:
- Environ Toxicol Chem., Vol. 25, No. 3, pp. 743-753, 2006
Materials and methods
- Principles of method if other than guideline:
- This study was designed to determine the effect of a copper gradient on a natural plant community structure.
Test material
- Reference substance name:
- Copper sulfate
- IUPAC Name:
- Copper sulfate
Constituent 1
Test organisms
open allclose all
Study design
- Study type:
- field study
- Substrate type:
- natural soil
Results and discussion
Effect concentrations
- Dose descriptor:
- other: see summary
- Remarks on result:
- other: see summary
Applicant's summary and conclusion
- Conclusions:
- Plant community composition was significantly correlated with soil copper concentration and community composition at soil copper concentrations above 200 mg/kg differed significantly from community composition at lower copper levels
- Executive summary:
Vegetation data including plant cover, biomass, species richness and vegetation height was sampled on a copper-contaminated field with total copper contents varying from 50 to almost 3000 mg/kg soil. The field was covered by early succession grassland dominated by Agrostis stolonifera. Plant cover, biomass, species richness and vegetation height generally decreased with increasing copper content, although the highest biomass was reached at intermediate copper concentrations. Multivariate statistical analyses showed that plant community composition was significantly correlated with soil copper concentration and that community composition at soil copper concentrations above 200 mg/kg differed significantly from community composition at lower copper levels. Comparison of single-species (Black Bindweed, Fallopia convolvulus) performance at the field site and in laboratory tests involving field soil and spiked soil indicates that the laboratory tests conventionally applied for risk assessment purposes do not overestimate copper effects. Interaction between copper and other stressors operating only in the field probably balance the higher bioavailability in spiked soils.
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