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Publication type: Article in scientific journal
Type of review: Peer review (publication)
Title: Microbial communities in floodplain ecosystems in relation to altered flow regimes and experimental flooding
Authors: Doering, Michael
Freimann, Remo
Antenen, Nadine
Roschi, Alexia
Robinson, Christopher T.
Rezzonico, Fabio
Smits, Theo
Tonolla, Diego
et. al: No
DOI: 10.1016/j.scitotenv.2021.147497
Published in: Science of the Total Environment
Volume(Issue): 788
Issue: 147497
Issue Date: 2021
Publisher / Ed. Institution: Elsevier
ISSN: 0048-9697
Language: English
Subjects: Microbial diversity; Hydrologic disturbance; Mass effect; Hydrologic connectivity; Ecohydrology
Subject (DDC): 333: Economics of land and resources
551: Geology and hydrology
Abstract: River floodplains are spatially diverse ecosystems that respond quickly to flow variations and disturbance. However, it remains unclear how flow alteration and hydrological disturbance impacts the structure and biodiversity of complex microbial communities in these ecosystems. Here, we examined the spatial and seasonal dynamics of microbial communities in aquatic (benthic) and terrestrial habitats of three hydrologically contrasting (natural flow, residual flow, hydropeaking flow) floodplain systems. Microbial communities (alpha and beta diversity) differed more among floodplain habitats than between riverine floodplains. Microbial communities in all systems displayed congruent seasonal effects. In the residual and hydropeaking systems, an experimental flood was released from a reservoir to mimic a natural high flow event causing hydromorphological disturbance. The experimental flood caused a temporary shift in microbial communities by releasing microbes from the reservoir as well as redistributing communities among floodplain habitats. The flood-mediated shift in community structures had only a transient impact as pelagic bacteria did not persist within floodplain habitats over time after the flood. More frequent pulse disturbances might lead to an alternate structure of bacterial communities in floodplains over time.
Fulltext version: Published version
License (according to publishing contract): CC BY 4.0: Attribution 4.0 International
Departement: Life Sciences and Facility Management
Organisational Unit: Institute of Natural Resource Sciences (IUNR)
Published as part of the ZHAW project: Nachhaltiges Auenmanagement und Wasserkraft - HyApp NRP70
Appears in collections:Publikationen Life Sciences und Facility Management

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