Goldenberg, Silvan Urs; Sswat, Michael; Aguirre-Velarde, Arturo; Ofelio, Claudia: KOSMOS 2020 Peru mesocosm study on ecosystem responses to different light and upwelling intensities: fish larvae growth and survival [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.967054 (dataset in review)
Abstract:
Fish larvae performance 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, 24 days-post-hatch) and chita (Anisotremus scapularis, 44 days-post-hatch) reared in the laboratory were introduced shortly after (day 19). Fish mortality was monitored continuously via carcasses sinking to the sediment trap. This 'Sediment' category of samples is only reliable for counts, while many length and weight measures will be inaccurate due to degradation. While live fish were subsampled during the experiment, not enough individuals could be caught for a proper analysis. Instead, the main sampling of live fish was at the end of the experiment (day 36). Most fish had reached the late larvae or early juvenile stage by that time. Fish length and wet mass were assessed for all these individuals. A subsample of both species was used to establish wet to dry to C to N mass relationships. These were applied to convert wet mass into dry, C and N mass for all other fish. 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: 2020-03-17T00:00:00 * Date/Time End: 2020-04-04T00:00:00
Event(s):
KOSMOS_2020_Laboratory-Baseline * Date/Time Start: 2020-02-28T00:00:00 * Date/Time End: 2020-04-02T00:00:00 * Campaign: KOSMOS_2020 (KOSMOS Peru) * Method/Device: Laboratory measurement
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)
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 | Sample origin: time and place of sample collection (base: laboratory baseline of fish introduction; InBetween: after fish introduction and before end of experiment; FinalNet: final fishing at end of experiment; Sediment: carcasses sediment trap) | ||
| 9 | Taxa | Taxa | Goldenberg, Silvan Urs | fish species, 'other' refers to various species other than chita and anchovy accidentally enclosed at start of experiment | ||
| 10 | Species, unique identification | Species UID | Goldenberg, Silvan Urs | |||
| 11 | Species, unique identification (URI) | Species UID (URI) | Goldenberg, Silvan Urs | |||
| 12 | Age | Age | days | Goldenberg, Silvan Urs | in days-post-hatch, based on hatching time of fish in laboratory | |
| 13 | Fish, standard length | Fish SL | mm | Goldenberg, Silvan Urs | most reliable length measure | |
| 14 | Fish, total length | Fish TL | mm | Goldenberg, Silvan Urs | less reliable length measure as caudal fins could be damaged | |
| 15 | Wet mass | Wet m | mg | Goldenberg, Silvan Urs | reliable mass measure for all live fish | |
| 16 | Dry mass | Dry m | mg | Goldenberg, Silvan Urs | Calculated | calculated via dry-wet mass relationship |
| 17 | Carbon mass | C | mg | Goldenberg, Silvan Urs | Calculated | calculated via dry-C mass relationship |
| 18 | Nitrogen mass | N | mg | Goldenberg, Silvan Urs | Calculated | calculated via C-N relationship |
| 19 | Carbon/Nitrogen ratio | C/N | mol/mol | Goldenberg, Silvan Urs | Calculated | calculated elemental ratio (for whole fish body) |
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:
26364 data points
Download Data (login required)
View dataset as HTML (shows only first 2000 rows)