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Response of sediment bacterial community to triclosan in subtropical freshwater benthic microcosms
2019
Peng, Feng Jiao | Diepens, Noël J. | Pan, Chang Gui | Ying, Guang Guo | Salvito, Daniel | Selck, Henriette | Van den Brink, Paul J.
The response of sediment bacterial communities in subtropical freshwater benthic microcosms to sediment-associated triclosan (TCS; 28 d exposure) was analysed using Illumina high-throughput sequencing. This study highlights the interactive effects of TCS and the presence of benthic macroinvertebrates (Limnodrilus hoffmeisteri and Viviparidae bellamya) on sediment bacterial communities. Our results show that TCS alone significantly altered the taxonomic composition and decreased alpha diversity of sediment bacterial communities at concentrations ≥80 μg TCS/g dry weight (dw) sediment (sed). Regarding dominant phyla, TCS significantly reduced the relative abundance of Bacteroidetes and Firmicutes at these concentrations, whereas the relative abundance of Chloroflexi and Cyanobacteria increased. In the presence of benthic macroinvertebrates, the sediment bacterial community was affected by 8 μg TCS/g dw sed as well. However, the presence of benthic macroinvertebrates did not cause measurable changes to bacterial community in unspiked (i.e., control) sediment. These results indicate that TCS alone would not alter the sediment bacterial community at environmentally relevant concentrations (up till 8 μg/g dw sed), but may have an effect in combination with the presence of benthic macroinvertebrates. Therefore, we recommend to include benthic macroinvertebrates when assessing the response of sediment bacterial communities during exposure to environmental stress such as organic contaminants.
اظهر المزيد [+] اقل [-]Response of sediment bacterial community to triclosan in subtropical freshwater benthic microcosms
2019
Peng, Feng Jiao | Diepens, Noël J. | Pan, Chang Gui | Ying, Guang Guo | Salvito, Daniel | Selck, Henriette | Van den Brink, Paul J.
The response of sediment bacterial communities in subtropical freshwater benthic microcosms to sediment-associated triclosan (TCS; 28 d exposure) was analysed using Illumina high-throughput sequencing. This study highlights the interactive effects of TCS and the presence of benthic macroinvertebrates (Limnodrilus hoffmeisteri and Viviparidae bellamya) on sediment bacterial communities. Our results show that TCS alone significantly altered the taxonomic composition and decreased alpha diversity of sediment bacterial communities at concentrations ≥80 μg TCS/g dry weight (dw) sediment (sed). Regarding dominant phyla, TCS significantly reduced the relative abundance of Bacteroidetes and Firmicutes at these concentrations, whereas the relative abundance of Chloroflexi and Cyanobacteria increased. In the presence of benthic macroinvertebrates, the sediment bacterial community was affected by 8 μg TCS/g dw sed as well. However, the presence of benthic macroinvertebrates did not cause measurable changes to bacterial community in unspiked (i.e., control) sediment. These results indicate that TCS alone would not alter the sediment bacterial community at environmentally relevant concentrations (up till 8 μg/g dw sed), but may have an effect in combination with the presence of benthic macroinvertebrates. Therefore, we recommend to include benthic macroinvertebrates when assessing the response of sediment bacterial communities during exposure to environmental stress such as organic contaminants.
اظهر المزيد [+] اقل [-]Life-cycle phases of a zinc- and cadmium-resistant ecotype of Silene vulgaris in risk assessment of polymetallic mine soils
2000
Ernst, W.H.O. | Nelissen, H.J.M.
Relationship between sugar maple decline and corresponding chemical changes in the stem tissue
1997
Mohamed, H.K. (Toronto Univ., Toronto, Ont. (Canada). Faculty of Forestry) | Pathak, S. | Roy, D.N. | Hutchinson, T.C. | McLaughlin, D.L. | Kinch, J.C.
Uptake of selenium by freshwater phytoplankton
1991
Riedel, G.F. (Academy of Natural Sciences, Benedict, MD (USA). Benedict Estuarine Research Lab.) | Ferrier, D.P. | Sanders, J.G.
Copper toxicity and chemistry in the environment: a review
1989
Flemming, C.A. (Guelph Univ. (Canada). Dept. of Environmental Biology) | Trevors, J.T.
Lake liming in different types of acid lakes using various types of calcite powders and methods
1988
Sverdrup, H. | Warfvinge, P.
In vitro effect of malathion and endosulfan on the LH-induced oocyte maturation in the common carp, Cyprinus carpio (L.)
1988
Haider, S. (Banaras Hindu Univ., Varanasi (India). Dept. of Zoology) | Inbaraj, R.M.
Influence of pH on the toxicity of aluminium and other inorganic contaminants to east coast striped bass
1987
Buckler, D.R. (National Fisheries Research Lab., Columbia, MO (USA)) | Mehrle, P.M. | Cleveland, L. | Dwyer, F.J.
The effect of pH on fungitoxic interactions between a solvent and pesticide
1986
Stratton, G.W. (Nova Scotia Agricultural College, Truro (Canada). Dept. of Biology)