Ortiz Cortes, Joaquin; González, Acorayda; Thielecke, Antonia; Arístegui, Javier (2023): KOSMOS 2020 Peru mesocosm study on ecosystem responses to different light and upwelling intensities: oxygen primary production rates of water samples [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.961218
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Abstract:
This data is part of the BMBF project CUSCO (Coastal Upwelling Systems in a Changing Ocean). Here we report oxygen primary production rates 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. Integrated seawater samples from a depth between 0 and 10m were collected using a 5L Integrating Water sampler (IWS; Hydro-Bios, Kiel). Oxygen production as well as respiration rates were measured as described in Ortiz et al. (2022; doi:10.3389/fmars.2021.743105) using the Winkler method. For each mesocosm and sampling day samples for initial oxygen values fixed immediately after subsampling ("Initial"), dark incubations ("Dark") and light incubations ("Light") were measured. All samples were incubated with constant light dark/cycles and temperature was adjusted regularly to mesocosm values. After incubation samples were fixed and titrated by means of an automated, precise titration system with colorimetric end-point detection along with the initials (Dissolved Oxygen Analyzer, SIS Schwentinental, Germany). Community respiration (CR) was calculated as the oxygen consumption during dark incubation per hour. Net community production (NCP) was the oxygen production per hour in the light samples and gross production (GP) the sum of CR and NCP.
Keyword(s):
Project(s):
Funding:
Federal Ministry of Education and Research (BMBF), grant/award no. 03F0813A: Küstennahe Auftriebsgebiete CUSCO: Auswirkungen geänderter Auftriebsintensitäten auf Struktur, Funktion und Produktivität pelagischer Nahrungsnetze im peruanischen Humboldt-Auftriebsgebiet
Horizon 2020 (H2020), grant/award no. 731065: Network of Leading European AQUAtic MesoCOSM Facilities Connecting Mountains to Oceans from the Arctic to the Mediterranean
Coverage:
Median Latitude: -12.055329 * Median Longitude: -77.235145 * South-bound Latitude: -12.056130 * West-bound Longitude: -77.235644 * North-bound Latitude: -12.054690 * East-bound Longitude: -77.234677
Date/Time Start: 2020-02-28T00:00:00 * Date/Time End: 2020-03-15T00:00:00
Event(s):
KOSMOS_2020_Mesocosm-M1 * Latitude: -12.054828 * Longitude: -77.235211 * Date/Time Start: 2020-02-28T00:00:00 * Date/Time End: 2020-04-02T00:00:00 * Campaign: KOSMOS_2020 (KOSMOS Peru) * Method/Device: Mesocosm experiment (MESO)
KOSMOS_2020_Mesocosm-M2 * Latitude: -12.054690 * Longitude: -77.234944 * Date/Time Start: 2020-02-28T00:00:00 * Date/Time End: 2020-04-02T00:00:00 * Campaign: KOSMOS_2020 (KOSMOS Peru) * Method/Device: Mesocosm experiment (MESO)
KOSMOS_2020_Mesocosm-M3 * Latitude: -12.054725 * Longitude: -77.234677 * Date/Time Start: 2020-02-28T00:00:00 * Date/Time End: 2020-04-02T00:00:00 * Campaign: KOSMOS_2020 (KOSMOS Peru) * Method/Device: Mesocosm experiment (MESO)
Comment:
Mesocosm 10 describes the control sample from the Pacific
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Type of study | Study type | Ortiz Cortes, Joaquin | |||
| 2 | Event label | Event | Ortiz Cortes, Joaquin | |||
| 3 | Mesocosm label | Meso label | Ortiz Cortes, Joaquin | |||
| 4 | DATE/TIME | Date/Time | Ortiz Cortes, Joaquin | Geocode | ||
| 5 | Day of experiment | DOE | day | Ortiz Cortes, Joaquin | ||
| 6 | Depth, water, experiment, top/minimum | Depth water exp top | m | Ortiz Cortes, Joaquin | ||
| 7 | Depth, water, experiment, bottom/maximum | Depth water exp max | m | Ortiz Cortes, Joaquin | ||
| 8 | Treatment: light condition | T:light | Ortiz Cortes, Joaquin | summer-time high light (HL) and winter-time low light (LL) | ||
| 9 | Treatment | Treat | Ortiz Cortes, Joaquin | upwelling intensity in % | ||
| 10 | Treatment | Treat | Ortiz Cortes, Joaquin | |||
| 11 | Respiration rate, oxygen, community | Comm resp O2 | µmol/l/h | Ortiz Cortes, Joaquin | Titration, Winkler | |
| 12 | Net community production of oxygen | NCP O2 | µmol/l/h | Ortiz Cortes, Joaquin | Titration, Winkler | |
| 13 | Gross community production of oxygen | GCP O2 | µmol/l/h | Ortiz Cortes, Joaquin | Titration, Winkler |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
972 data points