Stream Biofilm Responses to Flow Intermittency: From Cells to Ecosystems
dc.contributor.author
dc.date.accessioned
2019-09-10T10:15:40Z
dc.date.available
2019-09-10T10:15:40Z
dc.date.issued
2016-03-04
dc.identifier.uri
dc.description.abstract
Temporary streams are characterized by the alternation of dry and wet hydrological phases, creating both a harsh environment for the biota as well as a high diversity of opportunities for adaptation. These systems are mainly microbial-based during several of these hydrological phases, and those growing on all solid substrata (biofilms) accordingly change their physical structure and community composition. Biofilms experience large decreases in cell densities and biomass, both of bacteria and algae, during dryness. Algal and bacterial communities show remarkable decreases in their diversity, at least locally (at the habitat scale). Biofilms also respond with significant physiological plasticity to each of the hydrological changes. The decreasing humidity of the substrata through the drying process, and the changing quantity and quality of organic matter and nutrients available in the stream during that process, causes unequal responses on the biofilm bacteria and algae. Biofilm algae are affected faster than bacteria by the hydric stress, and as a result the ecosystem respiration resists longer than gross primary production to the increasing duration of flow intermittency. This response implies enhancing ecosystem heterotrophy, a pattern that can be exacerbated in temporary streams suffering of longer dry periods under global change
dc.description.sponsorship
This work has received a grant from the European Community 7th Framework Programme undergrant agreement No.
603629-ENV-2013-6.2.1-Globaqua.The authors acknowledge the support from the Economy and Knowledge Department
of the Catalan Government as being part of the Consolidated Research Group of the Catalan Institute for Water Research
(2014SGR291)
dc.format.mimetype
application/pdf
dc.language.iso
eng
dc.publisher
Frontiers Media
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Reproducció digital del document publicat a: https://doi.org/10.3389/fenvs.2016.00014
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Frontiers in Microbiology, 2016, vol.4, p. 14.
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Articles publicats (D-B)
dc.rights
Attribution 4.0 International
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dc.subject
dc.title
Stream Biofilm Responses to Flow Intermittency: From Cells to Ecosystems
dc.type
info:eu-repo/semantics/article
dc.rights.accessRights
info:eu-repo/semantics/openAccess
dc.relation.projectID
info:eu-repo/grantAgreement/EC/FP7/603629/EU/MANAGING THE EFFECTS OF MULTIPLE STRESSORS ON AQUATIC ECOSYSTEMS UNDER WATER SCARCITY/GLOBAQUA
dc.type.version
info:eu-repo/semantics/publishedVersion
dc.identifier.doi
dc.identifier.idgrec
026070
dc.type.peerreviewed
peer-reviewed
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dc.relation.ProjectAcronym
dc.identifier.eissn
1664-302X