Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.15302 |
Stream microbial communities and ecosystem functioning show complex responses to multiple stressors in wastewater | |
Francis J. Burdon; Yaohui Bai; Marta Reyes; Manu Tamminen; Philipp Staudacher; Simon Mangold; Heinz Singer; Katja Rä; sä; nen; Adriano Joss; Scott D. Tiegs; Jukka Jokela; Rik I. L. Eggen; Christian Stamm | |
2020-09-03 | |
发表期刊 | Global Change Biology |
出版年 | 2020 |
英文摘要 | Multiple anthropogenic drivers are changing ecosystems globally, with a disproportionate and intensifying impact on freshwater habitats. A major impact of urbanization are inputs from wastewater treatment plants (WWTPs). Initially designed to reduce eutrophication and improve water quality, WWTPs increasingly release a multitude of micropollutants (MPs; i.e., synthetic chemicals) and microbes (including antibiotic‐resistant bacteria) to receiving environments. This pollution may have pervasive impacts on biodiversity and ecosystem services. Viewed through multiple lenses of macroecological and ecotoxicological theory, we combined field, flume, and laboratory experiments to determine the effects of wastewater (WW) on microbial communities and organic‐matter processing using a standardized decomposition assay. First, we conducted a mensurative experiment sampling 60 locations above and below WWTP discharges in 20 Swiss streams. Microbial respiration and decomposition rates were positively influenced by WW inputs via warming and nutrient enrichment, but with a notable exception: WW decreased the activation energy of decomposition, indicating a “slowing” of this fundamental ecosystem process in response to temperature. Second, next‐generation sequencing indicated that microbial community structure below WWTPs was altered, with significant compositional turnover, reduced richness, and evidence of negative MP influences. Third, a series of flume experiments confirmed that although diluted WW generally has positive influences on microbial‐mediated processes, the negative effects of MPs are “masked” by nutrient enrichment. Finally, transplant experiments suggested that WW‐borne microbes enhance decomposition rates. Taken together, our results affirm the multiple stressor paradigm by showing that different aspects of WW (warming, nutrients, microbes, and MPs) jointly influence ecosystem functioning in complex ways. Increased respiration rates below WWTPs potentially generate ecosystem “disservices” via greater carbon evasion from streams and rivers. However, toxic MP effects may fundamentally alter ecological scaling relationships, indicating the need for a rapprochement between ecotoxicological and macroecological perspectives. |
领域 | 气候变化 ; 资源环境 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/293032 |
专题 | 气候变化 资源环境科学 |
推荐引用方式 GB/T 7714 | Francis J. Burdon,Yaohui Bai,Marta Reyes,et al. Stream microbial communities and ecosystem functioning show complex responses to multiple stressors in wastewater[J]. Global Change Biology,2020. |
APA | Francis J. Burdon.,Yaohui Bai.,Marta Reyes.,Manu Tamminen.,Philipp Staudacher.,...&Christian Stamm.(2020).Stream microbial communities and ecosystem functioning show complex responses to multiple stressors in wastewater.Global Change Biology. |
MLA | Francis J. Burdon,et al."Stream microbial communities and ecosystem functioning show complex responses to multiple stressors in wastewater".Global Change Biology (2020). |
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