Sensitive community responses of microbiota to copper in sediment toxicity test

Yang, J, Xie, Y, Jeppe, K, Long, S, Pettigrove, V and Zhang, X 2018, 'Sensitive community responses of microbiota to copper in sediment toxicity test', Environmental Toxicology and Chemistry, vol. 37, no. 2, pp. 599-608.

Document type: Journal Article
Collection: Journal Articles

Title Sensitive community responses of microbiota to copper in sediment toxicity test
Author(s) Yang, J
Xie, Y
Jeppe, K
Long, S
Pettigrove, V
Zhang, X
Year 2018
Journal name Environmental Toxicology and Chemistry
Volume number 37
Issue number 2
Start page 599
End page 608
Total pages 10
Publisher John Wiley & Sons
Abstract Sediment contamination is widespread and can be toxic to aquatic ecosystems and impair human health. Despite their significant ecological function, meio- and microbiota in aquatic ecosystems have been poorly studied in conventional sediment ecotoxicity tests because of the difficulty in sample collecting and identification. In the present study, a novel DNA metabarcoding method was used to assess the effects of spiked copper (Cu) on benthic eukaryotic and prokaryotic communities in laboratory sediment toxicity tests with macroinvertebrates, the chironomid Chironomus tepperi and the amphipod Austrochiltonia subtenuis. In addition to the obvious toxic effects to experimental animals, microbiota (bacteria, protists, algae, and fungi) were significantly altered by spiked Cu in the sediments. The phylogenetic diversity of eukaryotic communities was decreased after spiked-Cu exposure. Even a low-spiked Cu treatment (125 mg/kg) altered structures of eukaryotic and prokaryotic communities in the amphipod experiment. The present study demonstrates that measuring microbiota communities will expand our understanding of the influences of contaminants on aquatic ecosystems. Particularly, the alterations of phylogenetic biodiversity of eukaryotic communities and the structure of sedimentary communities are sensitive indicators for sediment contamination, which can be incorporated in the monitoring and assessment of sediment quality.
Subject Community Ecology
Keyword(s) Sediment toxicity test
Eukaryotic community
Prokaryotic community
DOI - identifier 10.1002/etc.3980
Copyright notice © 2017 SETAC
ISSN 0730-7268
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