Varmanen, Pia; Thielecke, Antonia; Meyer, Jana; Ludwig, Andrea; Spilling, Kristian (2023): KOSMOS 2020 Peru mesocosm study on ecosystem responses to different light and upwelling intensities: inorganic nutrient concentrations of water samples [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.961217
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Abstract:
This data is part of the BMBF project CUSCO (Coastal Upwelling Systems in a Changing Ocean). Here we report the inorganic nutrient concentrations 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). Water samples for inorganic nutrients were filtered (0.45 µm PTFE syringe filter, Merck Millex) and analysed in triplicates. Dissolved inorganic nutrients (nitrate, nitrite, phosphate, and dissolved silica were determined using a spectrophotometer (ShimadzuV-1800) and standard colorimetric methods (Grasshoff et al., 2009; DOI: 10.1002/iroh.19850700232). Ammonium was determined fluorometrically. Due to the COVID-19 lockdown, we were not able to determine inorganic nutrients after day 17, and instead samples were frozen at -20°C after filtration and analysed with an autosampler (XY2 autosampler, SEAL Analytical) and a continuous flow analyzer (QuAAtro AutoAnalyzer, SEAL Analytical) connected to a fluorescence detector (FP-2020, JASCO).
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: 2020-02-26T00:00:00 * Date/Time End: 2020-04-02T00:00:00
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
values marked with ? are questionable
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Type of study | Study type | Spilling, Kristian | |||
| 2 | Event label | Event | Spilling, Kristian | |||
| 3 | Mesocosm label | Meso label | Spilling, Kristian | |||
| 4 | DATE/TIME | Date/Time | Spilling, Kristian | Geocode | ||
| 5 | Day of experiment | DOE | day | Spilling, Kristian | ||
| 6 | Depth, water, experiment, top/minimum | Depth water exp top | m | Spilling, Kristian | ||
| 7 | Depth, water, experiment, bottom/maximum | Depth water exp max | m | Spilling, Kristian | ||
| 8 | Treatment: light condition | T:light | Spilling, Kristian | summer-time high light (HL) and winter-time low light (LL) | ||
| 9 | Treatment | Treat | Spilling, Kristian | upwelling intensity in % | ||
| 10 | Treatment | Treat | Spilling, Kristian | |||
| 11 | Nitrate | [NO3]- | µmol/l | Spilling, Kristian | ||
| 12 | Nitrite | [NO2]- | µmol/l | Spilling, Kristian | ||
| 13 | Nitrate and Nitrite | [NO3]- + [NO2]- | µmol/l | Spilling, Kristian | ||
| 14 | Phosphate | [PO4]3- | µmol/l | Spilling, Kristian | ||
| 15 | Silicate | Si(OH)4 | µmol/l | Spilling, Kristian | ||
| 16 | Ammonium | [NH4]+ | µmol/l | Spilling, Kristian | ||
| 17 | Comment | Comment | Spilling, Kristian |
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
2687 data points
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