KOSMOS 2020 Peru mesocosm study on ecosystem responses to different light and upwelling intensities: carbon and nitrogen uptake rates from water samples ...

This data is part of the BMBF project CUSCO (Coastal Upwelling Systems in a Changing Ocean). Here we report carbon and nitrogen uptake rates by phytoplankton collected during a 35-day experiment where we enclosed natural plankton communities in in-situ mesocosms off Peru. The experiment investigated...

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Bibliographic Details
Main Authors: Thielecke, Antonia, Kittu, Leila, Fernández-Méndez, Mar, Georgieva, Silvia, Behncke, Jaqueline, Nachtigall, Kerstin, Hansen, Levka
Format: Dataset
Language:English
Published: PANGAEA 2023
Subjects:
carbon uptake
Field experiment
Humboldt Current System
light limitation
mesocosm study
nutrient uptake
Peru
Upwelling
Type of study
Event label
Mesocosm label
DATE/TIME
Day of experiment
Depth, water, experiment, top/minimum
Depth, water, experiment, bottom/maximum
Treatment light condition
Treatment
Carbon, organic, particulate
Nitrogen, organic, particulate
Atom percent, 13C
Atom percent, 15N
Carbon uptake rate
Nitrogen uptake rate
Carbon/Nitrogen uptake ratio
Mesocosm experiment
Delta V Advantage Isotope Ratio Mass spectrometer with ConFlo IV interface ThermoFisher
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
Arctic
Phytoplankton
Online Access:https://dx.doi.org/10.1594/pangaea.961202
https://doi.pangaea.de/10.1594/PANGAEA.961202
Description
Summary:This data is part of the BMBF project CUSCO (Coastal Upwelling Systems in a Changing Ocean). Here we report carbon and nitrogen uptake rates by phytoplankton collected 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). Samples were spiked with 13C labelled sodium bicarbonate and 15N labelled potassium nitrate. Samples were incubated for 24 hours at light intensities that resemble the light conditions in the mesocosms. After incubation a subsample (150-1000 ml) was filtered onto a 0.7 µm pre-combusted glass-fiber filters (GFF, Whatmann). The filters were acidified, then dried in the ... : Mesocosm 10 describes the control sample from the Pacificvalues marked with / are invalid ...

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