TemBi 2014 mesocosm study: Summer storm effect on phytoplankton community composition and functional groups in Lake Stechlin

DOI

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. Phytoplankton community composition and biomass of phytoplankton functional groups were monitored for 42 days after the experimental disturbance event in addition to water physical variables and water chemistry. Mixing disrupted the thermal stratification, increased concentrations of dissolved nutrients and CO2 and changed light conditions in the epilimnion. Mixing stimulated phytoplankton growth and changes phytoplankton community composition, resulting in higher biomass of Cryptophyceae (within one week after mixing), Nostocales (mainly Dolichospermum sp.; 2-3 weeks after mixing) and thereafter Bacillariophyceae (mainly Asterionella sp.).

Empty cells = NAUtermöhl counting on an inverted microscope at 100-1000x magnification, biomass was volumetrically estimated by geometrical approximations (Hillebrand et al. 1999; Utermöhl, 1958; Lund et al., 1958; Hepperle & Schmidt-Halewicz, 2000).Further Project information:Core Facility grant; Award: GE 1775/2-1

Identifier
DOI https://doi.org/10.1594/PANGAEA.930980
Related Identifier https://doi.pangaea.de/10.1594/PANGAEA.931002
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.930980
Provenance
Creator Selmeczy, Géza B; Padisák, Judit; Grossart, Hans-Peter ORCID logo
Publisher PANGAEA
Publication Year 2021
Funding Reference Federal Ministry of Education and Research https://doi.org/10.13039/501100002347 Crossref Funder ID 01LC1501G Bridging in Biodiversity Science; Federal Ministry of Education and Research https://doi.org/10.13039/501100002347 Crossref Funder ID 033L041B Stickstofflimitation in Binnengewässern; Leibniz Association https://doi.org/10.13039/501100001664 Crossref Funder ID SAW-2011-IGB-2 Climate driven Changes in Biodiversity of Microbiota
Rights Creative Commons Attribution 4.0 International; https://creativecommons.org/licenses/by/4.0/
OpenAccess true
Representation
Resource Type Dataset
Format text/tab-separated-values
Size 17848 data points
Discipline Earth System Research
Spatial Coverage (13.028 LON, 53.143 LAT); Germany
Temporal Coverage Begin 2014-08-04T00:00:00Z
Temporal Coverage End 2014-09-16T00:00:00Z