Goldenberg, Silvan Urs; Sswat, Michael; Kittu, Leila; Spisla, Carsten (2024): KOSMOS 2020 Peru mesocosm study on ecosystem responses to different light and upwelling intensities: d15N and trophic level for fish, meso-zooplankton and particulate organic matter [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.971267
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Abstract:
Trophic structure of plankton communities 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). Larvae Peruvian anchovy (Engraulis ringens, 22 days-post-hatch) and chita (Anisotremus scapularis, 44 days-post-hatch) reared in the laboratory were introduced shortly after (day 19). Meso-zooplankton were sampled with small nets at several points in time and the fish once with a large net at the end of the experiment (day 36). Groups of whole meso-zooplankton individuals and muscle tissue of single fish individuals were analysed for C, N and δ15N. Most fish had reached the late larval or early juvenile stage by that time. Particulate organic matter was monitored throughout the entire experiment in 2-day intervals. Trophic level of fish and zooplankton was approximated using particulate organic matter corrected for its heterotrophic component as autotroph baseline and a discrimination factor of 3.4. Methodological details in Goldenberg et al. and Thielecke et al. (manuscripts in progress).
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: -12.055400 * 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: 2020-04-03T00:00:00
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)
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Type of study | Study type | Goldenberg, Silvan Urs | |||
| 2 | Event label | Event | Goldenberg, Silvan Urs | |||
| 3 | DATE/TIME | Date/Time | Goldenberg, Silvan Urs | Geocode | ||
| 4 | Day of experiment | DOE | day | Goldenberg, Silvan Urs | time passed since mesocosm closure | |
| 5 | Treatment: light condition | T:light | Goldenberg, Silvan Urs | light intensity manipulation that started on day 0 | ||
| 6 | Treatment | Treat | Goldenberg, Silvan Urs | upwelling intensity manipulation started on day 13, as % of mesocosm exchanged by nutrient-rich deep water | ||
| 7 | Mesocosm label | Meso label | Goldenberg, Silvan Urs | label for the 9 independent experimental units | ||
| 8 | Sample type | Samp type | Goldenberg, Silvan Urs | broader functional grouping (fish, larger zooplankton, smaller zooplankton or particulate organic matter) | ||
| 9 | Organisms | Org | Goldenberg, Silvan Urs | detailed taxonomic and functional grouping | ||
| 10 | Taxon/taxa, unique identification | Taxa UID | Goldenberg, Silvan Urs | |||
| 11 | Taxon/taxa, unique identification (Semantic URI) | Taxa UID (Semantic URI) | Goldenberg, Silvan Urs | |||
| 12 | Taxon/taxa, unique identification (URI) | Taxa UID (URI) | Goldenberg, Silvan Urs | |||
| 13 | Size group description | Size group desc | Goldenberg, Silvan Urs | Size class [µm]: mesh size that retained the organisms | ||
| 14 | Number of individuals | Ind No | # | Goldenberg, Silvan Urs | pooled per sample to measure C, N, δ15N | |
| 15 | Fish, standard length | Fish SL | mm | Goldenberg, Silvan Urs | Measured | |
| 16 | Wet mass | Wet m | mg | Goldenberg, Silvan Urs | Measured | for fish only |
| 17 | Dry mass | Dry m | mg | Goldenberg, Silvan Urs | Calculated | calculated with dry-wet mass relationship, for fish only |
| 18 | Carbon content per individual | C/ind | µg/# | Goldenberg, Silvan Urs | µg/id: calculated for fish (dry-C mass relationship) and measured for zooplankton | |
| 19 | Nitrogen content per individual | N/ind | µg/# | Goldenberg, Silvan Urs | µg/id: calculated for fish (C-N ratio relationship) and measured for zooplankton | |
| 20 | Carbon/Nitrogen ratio | C/N | mol/mol | Goldenberg, Silvan Urs | elemental ratio carbon to nitrogen (whole body for zooplankton and muscle tissue for fish) | |
| 21 | Carbon | C | µg | Goldenberg, Silvan Urs | µg/sample: measured carbon mass in tin cup sample | |
| 22 | Nitrogen | N | µg | Goldenberg, Silvan Urs | µg/sample: measured nitrogen mass in tin cup sample | |
| 23 | δ15N | δ15N | ‰ | Goldenberg, Silvan Urs | N isotope signal of fish, zooplankton or PON sample | |
| 24 | δ15N | δ15N | ‰ | Goldenberg, Silvan Urs | approximate N isotope signal of autotroph baseline (trophic level 1) | |
| 25 | Trophic level | Trophic level | Goldenberg, Silvan Urs | estimated trophic level of fish or zooplankton |
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:
14215 data points
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