TemBi 2014 mesocosm study: Summer storm impact on size-fractionated bacterial protein production and abundance of heterotrophic prokaryotes and picocyanobacteria
TemBi 2014 mesocosm study: Summer storm impact on size-fractionated bacterial protein production and abundance of heterotrophic prokaryotes and picocyanobacteria
We simulated an experimental summer storm in large-volume (~1200 m3, ~16m depth) enclosures in Lake Stechlin (https://www.lake-lab.de) by mixing deeper water masses from the meta- and hypolimnion into the mixed layer (epilimnion). The mixing included the disturbance of a deep chlorophyll maximum (DCM) which was present at the same time of the experiment in Lake Stechlin and situated in the metalimnion of each enclosure during filling. Size-fractionated Bacterial Protein Production (BPP) of particle associated (PA, >3.0 µm) and free-living bacteria (FL, 0.2-3.0 µm) (14C-Leu incorporation) as well as abundances of PA (microscopy of DAPI stained cells on 3.0 µm polycarbonate filters) and FL heterotrophic prokaryotes and picocyanobacteria (flow cytometry of SYBR green I stained cells) were monitored for 42 days after the experimental disturbance event. Mixing increased bacterial abundance and production about 3 weeks after mixing, which was associated to a mixing-induced stimulation of phytoplankton growth in the mixed enclosures compared to the controls. Simultaneously, decreased abundances of picocyanobacteria could be observed in mixed enclosures.
Empty cells = NAFurther Project information: Core Facility grant; Award: GE 1775/2-1
Day of experiment, free living bacteria, Bridging in Biodiversity Science (BIBS), 14C leucine incorporation, bacterial production, cyanobacteria, summer storm, Climate driven Changes in Biodiversity of Microbiota (TemBi), Particle associated bacterial abundance, Climate change, chlorophyll, Flow cytometry, Mesocosm label, Protein production, free-living bacteria, Climate driven Changes in Biodiversity of Microbiota TemBi, disturbance, DCM, Particle-associated bacterial abundance, Description, Free-living bacterial abundance, derived, particle associated bacteria, Picocyanobacteria abundance, mesocosm experiment, Nostocales cell abundance, climate change, Stickstofflimitation in Binnengewässern NITROLIMIT, Earth System Research, 14C-leucine incorporation, Nostocales biovolume, Bacterial abundance of LDNA-Bacteria, water, Protein production, particle associated bacteria, Bacterial abundance of HDNA Bacteria, Epifluorescence microscopy after DAPI staining, Oxygen/Nitrogen ratio, Stickstofflimitation in Binnengewässern (NITROLIMIT), Bridging in Biodiversity Science BIBS, DATE TIME, Oxygen Nitrogen ratio, Protein production, lake, Free living bacterial abundance, DEPTH, water, enclosure experiment, Treatment, Bacterial abundance of LDNA Bacteria, DATE/TIME, Enclosure experiment, DEPTH, Bacterial abundance of HDNA-Bacteria
Day of experiment, free living bacteria, Bridging in Biodiversity Science (BIBS), 14C leucine incorporation, bacterial production, cyanobacteria, summer storm, Climate driven Changes in Biodiversity of Microbiota (TemBi), Particle associated bacterial abundance, Climate change, chlorophyll, Flow cytometry, Mesocosm label, Protein production, free-living bacteria, Climate driven Changes in Biodiversity of Microbiota TemBi, disturbance, DCM, Particle-associated bacterial abundance, Description, Free-living bacterial abundance, derived, particle associated bacteria, Picocyanobacteria abundance, mesocosm experiment, Nostocales cell abundance, climate change, Stickstofflimitation in Binnengewässern NITROLIMIT, Earth System Research, 14C-leucine incorporation, Nostocales biovolume, Bacterial abundance of LDNA-Bacteria, water, Protein production, particle associated bacteria, Bacterial abundance of HDNA Bacteria, Epifluorescence microscopy after DAPI staining, Oxygen/Nitrogen ratio, Stickstofflimitation in Binnengewässern (NITROLIMIT), Bridging in Biodiversity Science BIBS, DATE TIME, Oxygen Nitrogen ratio, Protein production, lake, Free living bacterial abundance, DEPTH, water, enclosure experiment, Treatment, Bacterial abundance of LDNA Bacteria, DATE/TIME, Enclosure experiment, DEPTH, Bacterial abundance of HDNA-Bacteria
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