TemBi 2014 mesocosm study: Summer storm impact on sedimentation rates of particulate matter 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. Water physical variables and water chemistry was monitored for 42 days after the experimental disturbance event. Mixing disrupted the thermal stratification, increased concentrations of dissolved nutrients and CO2 and changed light conditions in the epilimnion. Mixing stimulated phytoplankton growth, thus, resulting in a bloom of Dolichospermum sp. and thereafter increased biomass of Bacillariophyceae. Subsequent, break down of both phytoplankton groups resulted in higher particulate matter sinking fluxes of particulate organic carbon (POC), total particulate nitrogen (TPN) and total particulate phosphorous (TPP) 4-5 weeks after the disturbance event. Mixing resulted in average increases in elemental downward fluxes of 9% POC, 14% total particulate Nitrogen (TPN) and 19% TPP by the end of the experiment (42 days) (n.control=4, n.mixed=4).

Further Project information:Core Facility grant; Award: GE 1775/2-1

Identifier
DOI https://doi.org/10.1594/PANGAEA.930931
Related Identifier IsPartOf 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.930931
Provenance
Creator Hornick, Thomas ORCID logo; Santaolalla, Gonzalo Idoate; Berger, Stella A (ORCID: 0000-0002-8835-545X); 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 527 data points
Discipline Earth System Research
Spatial Coverage (13.028 LON, 53.143 LAT); Germany
Temporal Coverage Begin 2014-08-13T00:00:00Z
Temporal Coverage End 2014-09-17T00:00:00Z