Dausmann, Veit; Theileis, Anton; Goldenberg, Silvan Urs; Taucher, Jan (2025): KOSMOS 2020 Peru mesocosm on ecosystem responses to different light and upwelling intensities: zooplankton dynamics via Plankton Imaging with Scanning Optics (PIScO) [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.982350 (DOI registration in progress)
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Published: 2025-05-08
Abstract:
Zooplankton dynamics during the mesocosm experiment in the Peruvian upwelling system near Lima from February-April 2020. Light (ambient = high vs. reduced = low) was manipulated from the beginning (day 0) and upwelling (0 to 60% deep water addition) two weeks into the experiment (day 13). Copepods >200 µm were sampled every two days using Plankton Imaging with Scanning Optics (PIScO) (Taucher et al. 2022). This camera system was lowered from the surface to the sediment trap, scanning at three frames per second. Each image sampled 0.577 L of seawater, summing to 99 L per camera cast. Images were analyzed for copepods with an object detection algorithm trained by a human observer on 11,269 images (73% for both precision and recall). For each image, abundance and individual size (equivalent spherical diameter, ESD) was calculated. The data shown here represent averages across the entire water column, ranging from 1.15 to 10.5 m depth. Methodological details in Goldenberg et al. and Thielecke et al. (manuscripts in progress).
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
Coverage:
Median Latitude: -12.055400 * Median Longitude: -77.235168 * 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: 2020-04-02T00:00:00
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:
Taucher J, Dausmann V and Theileis A (2022) Method for improved optical resolution in large measuring volumes in telecentric shadowgraphy and device for carrying out the method. German patent No. DE102021109153B4. Deutsches Patent- und Markenamt. https://patents.google.com/patent/DE102021109153B4/en
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Dausmann, Veit | |||
| 2 | Type of study | Study type | Dausmann, Veit | |||
| 3 | DATE/TIME | Date/Time | Dausmann, Veit | Geocode | ||
| 4 | Day of experiment | DOE | day | Dausmann, Veit | ||
| 5 | Treatment: light condition | T:light | Dausmann, Veit | light intensity manipulation that started on day 0 | ||
| 6 | Treatment | Treat | Dausmann, Veit | upwelling intensity manipulation started on day 13, as % of mesocosm exchanged by nutrient-rich deep water | ||
| 7 | Mesocosm label | Meso label | Dausmann, Veit | |||
| 8 | Number | n | # | Dausmann, Veit | number of images included in the respective camera cast | |
| 9 | Sample amount | N | # | Dausmann, Veit | number of individuals identified and measured per cast | |
| 10 | Copepoda | Copepoda | #/l | Dausmann, Veit | average abundance across all images | |
| 11 | Equivalent spherical diameter | ESD | µm | Dausmann, Veit | average size of individuals based on equivalent spherical diam |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
1353 data points