KOSMOS 2020 Peru mesocosm study on ecosystem responses to different light and upwelling intensities: HPLC pigment concentrations and phytoplankton community composition based on CHEMTAX analysis of water samples ...

• Main Authors: Behncke, Jaqueline, Thielecke, Antonia, Kittu, Leila, Georgieva, Silvia, Nachtigall, Kerstin, Hansen, Levka, Fernández-Méndez, Mar
• Format: Dataset
• Language: English
• Published: PANGAEA 2023
• Subjects: Chemtax; Field experiment; HPLC pigments; light limitation; mesocosm experiment; Phytoplankton composition; 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; Chlorophyll a, Diatoms; Chlorophyll a, Dinoflagellata; Chlorophyll a, Cryptophyta; Chlorophyll a, Pelagophytes; Chlorophyll a, Coccolithophores; Chlorophyll a, Phaeocystis; Chlorophyll a, Prasinophyta; Chlorophyll a, Chlorophyta; Chlorophyll a, Synechococcus spp.; Chlorophyll a, Fibrocapsa japonica; Chlorophyll b; Chlorophyll c3; Peridinin; 19-Butanoyloxyfucoxanthin; Fucoxanthin; Neoxanthin; Prasinoxanthin; Violaxanthin; 19-Hexanoyloxyfucoxanthin; Alloxanthin; Zeaxanthin; Lutein; Chlorophyll a; Mesocosm experiment; HPLC/CHEMTAX Mackey et al. 1996; 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.961210; https://doi.pangaea.de/10.1594/PANGAEA.961210

This data is part of the BMBF project CUSCO (Coastal Upwelling Systems in a Changing Ocean). Here we report pigment concentrations and the phytoplankton community composition based on CHEMTAX analysis 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). To obtain pigment concentrations 0.15 – 1L of water sampled from the water column were filtered onto glass-fiber filters (precombusted at 450°C for 6h, GFF, 0.7 µm nominal pore size, Whatman) using a low vacuum of 200 mbar. Afterwards the filters were stored in cryovials at -80°C until analysis of photosynthetic pigments using ... : Mesocosm 10 describes the control sample from the PacificHPLC data for day3 - mesocosm3 was measured as triplicate and day 7 - mesocosm 9 as duplicate. The values provided are the averages of the measured replicates. ...