Repeated disturbances affect functional but not compositional resistance and resilience in an aquatic bacterioplankton community

Sjöstedt, Johanna (author): Uppsala universitet,Uppsala University,Lund University,Lunds universitet,Enhet akvatisk ekologi,Biologiska institutionen,Naturvetenskapliga fakulteten,Division aquatic ecology,Department of Biology,Faculty of Science,Uppsala University, Uppsala, Sweden; Lund University, Lund, Sweden,Limnologi,Department of Biology/Aquatic Ecology, Lund University, Lund, Sölvegatan 37, SE 22362, Sweden

Langenheder, Silke (author): Uppsala universitet,Uppsala University,Uppsala University, Sweden,Limnologi

Kritzberg, Emma (author): Lund University,Lunds universitet,Enhet akvatisk ekologi,Biologiska institutionen,Naturvetenskapliga fakulteten,Division aquatic ecology,Department of Biology,Faculty of Science,Department of Biology/Aquatic Ecology, Lund University, Lund, Sölvegatan 37, SE 22362, Sweden

Karlsson, Christofer M. G. (author): Linnéuniversitetet,Institutionen för biologi och miljö (BOM),Ctr Ecol & Evolut Microbial Model Syst EEMiS,Centre for Ecology and Evolution in Microbial model Systems ‐ EEMiS, Linnaeus University, Kalmar, SE 39231, Sweden

Lindström, Eva S. (author): Uppsala universitet,Uppsala University,Uppsala University, Sweden,Limnologi

(creator_code:org_t)

2018-07-24
2018
English 8 s.
In: Environmental microbiology reports. - : Wiley. - 1758-2229. ; 10:4, s. 493-500

Related links:: http://dx.doi.org/10...; show more...; https://lup.lub.lu.s...; https://doi.org/10.1...; https://urn.kb.se/re...; https://urn.kb.se/re...; https://urn.kb.se/re...; show less...

Abstract Subject headings

Disturbances are believed to be one of the main factors influencing variations in community diversity and functioning. Here we investigated if exposure to a pH press disturbance affected the composition and functional performance of a bacterial community and its resistance, recovery and resilience to a second press disturbance (salt addition). Lake bacterial assemblages were initially exposed to reduced pH in six mesocosms whereas another six mesocosms were kept as reference. Seven days after the pH disturbance, three tanks from each treatment were exposed to a salt disturbance. Both bacterial production and enzyme activity were negatively affected by the salt treatment, regardless if the communities had been subject to a previous disturbance or not. However, cell-specific enzyme activity had a higher resistance in communities pre-exposed to the pH disturbance compared to the reference treatment. In contrast, for cell-specific bacterial production resistance was not affected, but recovery was faster in the communities that had previously been exposed to the pH disturbance. Over time, bacterial community composition diverged among treatments, in response to both pH and salinity. The difference in functional recovery, resilience and resistance may depend on differences in community composition caused by the pH disturbance, niche breadth or acquired stress resistance.

By the author/editor: Sjöstedt, Johann ...; Langenheder, Sil ...; Kritzberg, Emma; Karlsson, Christ ...; Lindström, Eva S ...

About the subject

NATURAL SCIENCES: NATURAL SCIENCES; and Biological Scien ...; and Microbiology

By the university: Lund University; Linnaeus University; Halmstad University; Uppsala University

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