The effect of light intensity and shear stress on microbial biostabilization and the community composition of natural biofilms

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dc.identifier.uri http://dx.doi.org/10.15488/4904
dc.identifier.uri https://www.repo.uni-hannover.de/handle/123456789/4947
dc.contributor.author Schmidt, Holger
dc.contributor.author Thom, Moritz
dc.contributor.author Wieprecht, Silke
dc.contributor.author Manz, Werner
dc.contributor.author Gerbersdorf, Sabine Ulrike
dc.date.accessioned 2019-05-29T10:48:51Z
dc.date.available 2019-05-29T10:48:51Z
dc.date.issued 2018
dc.identifier.citation Schmidt, H.; Thom, M.; Wieprecht, S.; Manz, W.; Gerbersdorf, S.U.: The effect of light intensity and shear stress on microbial biostabilization and the community composition of natural biofilms. In: Research and Reports in Biology 9 (2018), S. 1-16. DOI: https://doi.org/10.2147/RRB.S145282
dc.description.abstract Biofilms constitute an important issue in microbial ecology, due to their high ecological and economic relevance, but the impact of abiotic conditions and microbial key players on the development and functionality of a natural biofilm is still little understood. This study investigated the effects of light intensity (LI) and bed shear stress (BSS) and the role of dominant microbes during the formation of natural biofilms and particularly the process microbial biostabilization. A comprehensive analysis of microbial biomass, extracellular polymeric substances produced, and the identification of dominant bacterial and algal species was correlated with assessment of biofilm adhesiveness/stability. LI and BSS impacted the biofilms in very different ways: biofilm adhesiveness significantly increased with LI and decreased with BSS. Moreover, microbial biomass and the functional organization of the bacterial community increased with LI, while the dynamics in the bacterial community increased with BSS. Most stable biofilms were dominated by sessile diatoms like Achnanthidium minutissimum or Fragilaria pararumpens and bacteria with either filamentous morphology, such as Pseudanabaena biceps, or a potential high capacity for extracellular polymeric-substance production, such as Rubrivivax gelatinosus. In contrast, microbes with high motility, such as Nitzschia fonticola, Pseudomonas fluorescens, and Caulobacter vibrioides, dominated the least adhesive biofilms. Their movement and potential antibiotic production could have had a disruptive impact on the biofilm matrix, which decreased its stability. This is the first study to unveil the link between abiotic conditions and resulting shifts in key microbial players to impact the ecosystem-service microbial biostabilization. eng
dc.language.iso eng
dc.publisher Auckland : Dove Medical Press
dc.relation.ispartofseries Research and Reports in Biology 9 (2018)
dc.rights CC BY-NC 3.0 Unported
dc.rights.uri https://creativecommons.org/licenses/by-nc/3.0/
dc.subject microbial biostabilization eng
dc.subject natural biofilms eng
dc.subject abiotic factors eng
dc.subject microbial community eng
dc.subject mesocosm eng
dc.subject.ddc 570 | Biowissenschaften, Biologie ger
dc.title The effect of light intensity and shear stress on microbial biostabilization and the community composition of natural biofilms
dc.type article
dc.type Text
dc.relation.essn 1179-7274
dc.relation.doi https://doi.org/10.2147/RRB.S145282
dc.bibliographicCitation.volume 9
dc.bibliographicCitation.firstPage 1
dc.bibliographicCitation.lastPage 16
dc.description.version publishedVersion
tib.accessRights frei zug�nglich


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