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Ecotoxicological information

Long-term toxicity to aquatic invertebrates

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Link to relevant study record(s)

Description of key information

freshwater:
Data on 13 species available. Species NOECs range between 0.014 and 0.400 mg Zn/l (dissolved concentrations)
Marine:
Data on 26 species available. Species NOECs range between 0.0056 and 0.9 mg Zn/l (dissolved concentrations)
Species NOECs have been put into their respective species sensitivity distributions.

Key value for chemical safety assessment

Additional information

Extensive high quality chronic data were available on 13 different freshwater invertebrate species and 26 marine invertebrate species. These data were all screened for relevancy to the environment under study.

The freshwater species are part of several different taxonomic groups: poriferans (4 species), molluscs (2 species), crustaceans (4 species), rotifers (2 species) and insects (1 species). The sensitivity of these species is equally distributed over the species sensitivity distribution.

The marine species are part of several different taxonomic groups: annelids (4 species), cniderians (1 species), crustaceans (6 species), echinoderms (5 species), molluscs (9 species) and nematods (1 species) .The sensitivity of these species is equally distributed over the species sensitivity distribution.

The invertebrate species NOECs are combined with the other freshwater and marine chronic data in the SSD to give the HC5 from which the respective PNECs are derived.