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dc.contributor.author
Burdon, Francis J.
dc.contributor.author
Bai, Yaohui
dc.contributor.author
Reyes, Marta
dc.contributor.author
Tamminen, Manu
dc.contributor.author
Staudacher, Philipp
dc.contributor.author
Mangold, Simon
dc.contributor.author
Singer, Heinz
dc.contributor.author
Räsänen, Katja
dc.contributor.author
Joss, Adriano
dc.contributor.author
Tiegs, Scott D.
dc.contributor.author
Jokela, Jukka
dc.contributor.author
Eggen, Rik I.L.
dc.contributor.author
Stamm, Christian
dc.date.accessioned
2020-11-11T16:02:57Z
dc.date.available
2020-09-16T03:01:52Z
dc.date.available
2020-09-16T11:35:10Z
dc.date.available
2020-11-11T16:02:57Z
dc.date.issued
2020-11
dc.identifier.issn
1354-1013
dc.identifier.issn
1365-2486
dc.identifier.other
10.1111/gcb.15302
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/440725
dc.identifier.doi
10.3929/ethz-b-000440725
dc.description.abstract
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.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
Wiley
en_US
dc.rights.uri
http://creativecommons.org/licenses/by/4.0/
dc.subject
biodiversity
en_US
dc.subject
carbon processing
en_US
dc.subject
cotton‐strip assay
en_US
dc.subject
micropollutants
en_US
dc.subject
next‐generation sequencing
en_US
dc.subject
nutrients
en_US
dc.subject
temperature
en_US
dc.subject
warming
en_US
dc.title
Stream microbial communities and ecosystem functioning show complex responses to multiple stressors in wastewater
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution 4.0 International
dc.date.published
2020-09-03
ethz.journal.title
Global Change Biology
ethz.journal.volume
26
en_US
ethz.journal.issue
11
en_US
ethz.journal.abbreviated
Glob. chang. biol.
ethz.pages.start
6363
en_US
ethz.pages.end
6382
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.identifier.wos
ethz.identifier.scopus
ethz.publication.place
Oxford
en_US
ethz.publication.status
published
en_US
ethz.date.deposited
2020-09-16T03:01:57Z
ethz.source
WOS
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2020-11-11T16:03:08Z
ethz.rosetta.lastUpdated
2021-02-15T20:42:06Z
ethz.rosetta.versionExported
true
ethz.COinS
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