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 ...

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...

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Bibliographic Details
Main Authors: Goldenberg, Silvan Urs, Sswat, Michael, Kittu, Leila, Spisla, Carsten
Format: Dataset
Language:unknown
Published: PANGAEA 2024
Subjects:
chita
Eastern Boundary Upwelling systems
fish larvae
Humboldt Current System
KOSMOS
mesocosm experiment
Peruvian anchovy
plankton food web
trophic level
δ15N
Type of study
Event label
DATE/TIME
Day of experiment
Treatment: light condition
Treatment
Mesocosm label
Sample type
Organisms
Taxon/taxa, unique identification
Taxon/taxa, unique identification Semantic URI
Taxon/taxa, unique identification URI
Size group description
Number of individuals
Fish, standard length
Wet mass
Dry mass
Carbon content per individual
Nitrogen content per individual
Carbon/Nitrogen ratio
Carbon
Nitrogen
Trophic level
Mesocosm experiment
Measured
Calculated
KOSMOS_2020
Coastal Upwelling System in a Changing Ocean CUSCO
Network of Leading European AQUAtic MesoCOSM Facilities Connecting Mountains to Oceans from the Arctic to the Mediterranean AQUACOSM
Zooplankton
Online Access:https://dx.doi.org/10.1594/pangaea.971267
https://doi.pangaea.de/10.1594/PANGAEA.971267
Description
Summary: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 ...

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