KOSMOS 2020 Peru mesocosm study on ecosystem responses to different light and upwelling intensities: CTD data


This data is part of the BMBF project CUSCO (Coastal Upwelling Systems in a Changing Ocean). Here we report the environmental conditions during a 35-day experiment, where we enclosed natural plankton communities in in-situ mesocosms off Peru. The experiment investigated the interactive effects of light and upwelling on the Humboldt upwelling ecosystem by mimicking a gradient of upwelling intensities (0%, 15%, 30%, 45% and 60%) under summer-time high light and winter-time low light. CTD casts were taken between 0 and 12.5m with a CTD167M sensor system (Sea&Sun Technology, Trappenkamp, Germany) to generate depth profiles of conductivity, salinity, density, pH, temperature and photosynthetically active radiation (PAR) as well as oxygen, hydrogen sulphide and Chla concentrations (sensors described in (Schulz and Riebesell, 2013; Bach et al., 2016; doi:10.1007/s00227-012-1965-y, doi:10.1002/2016GB005372). The water sampling and CTD casts of the Pacific took place in the mesocosm field.

Mesocosm 10 describes the control sample from the PacificCTD data was subset to only include values between 0.3 and 12m to remove disturbances at the surface and near the sediment trap.

DOI https://doi.org/10.1594/PANGAEA.961213
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.961213
Creator Thielecke, Antonia ORCID logo; Ludwig, Andrea; Riebesell, Ulf (ORCID: 0000-0002-9442-452X)
Publisher PANGAEA
Publication Year 2023
Funding Reference Federal Ministry of Education and Research https://doi.org/10.13039/501100002347 Crossref Funder ID 03F0813A https://foerderportal.bund.de/foekat/jsp/SucheAction.do?actionMode=view&fkz=03F0813A Küstennahe Auftriebsgebiete CUSCO: Auswirkungen geänderter Auftriebsintensitäten auf Struktur, Funktion und Produktivität pelagischer Nahrungsnetze im peruanischen Humboldt-Auftriebsgebiet
Rights Data access is restricted (moratorium, sensitive data, license constraints)
OpenAccess false
Resource Type Dataset
Format text/tab-separated-values
Size 2505891 data points
Discipline Earth System Research
Spatial Coverage (-77.236W, -12.056S, -77.235E, -12.055N)
Temporal Coverage Begin 2020-02-25T07:08:42Z
Temporal Coverage End 2020-04-02T10:38:02Z