KOSMOS mesocosm experiment Gran Canaria 2019 on testing the effect of nutrient composition (Si:N) during artificial upwelling: microzooplankton, mesozooplankton and toxins ...

• Main Authors: Goldenberg, Silvan Urs, Fiesinger, Anna, Spisla, Carsten, Stuhr, Annegret, Fernández-Méndez, Mar, Krock, Bernd
• Format: Dataset
• Language: English
• Published: PANGAEA 2023
• Subjects: artificial upwelling; carbon dioxide removal; diatoms; Field experiment; GC2019; KOSMOS; mesocosm experiment; negative emission technology; ocean fertilization; plankton food web; trophic transfer; Type of study; Event label; DATE/TIME; Day of experiment; Treatment; Mesocosm label; Phase description; Depth, water, experiment, top/minimum; Depth, water, experiment, bottom/maximum; Ciliates, heterotrophic; Dinoflagellates; Protista, heterotrophic; Ciliates, heterotrophic, biomass as carbon; Dinoflagellates, biomass as carbon; Protista, heterotrophic, biomass as carbon; Mesozooplankton; Copepoda; Copepoda, nauplii; Mesozooplankton, biomass as carbon; Copepoda, biomass as carbon; Domoic acid; Domoic acid per unit mass particulate organic carbon; Mesocosm experiment; Size fraction 55-200 µm; Size fraction 200-500 µm; Size fraction > 500 µm; Size fraction > 55 µm; KOSMOS_2019; DAM CDRmare - Test-ArtUp Road testing ocean artificial upwelling Test-ArtUp; Network of Leading European AQUAtic MesoCOSM Facilities Connecting Mountains to Oceans from the Arctic to the Mediterranean AQUACOSM; Ocean Artificial Upwelling Ocean-artUp; Research Mission of the German Marine Research Alliance DAM Marine carbon sinks in decarbonisation pathways CDRmare; Arctic; Zooplankton; Copepods
• Online Access: https://dx.doi.org/10.1594/pangaea.963462; https://doi.pangaea.de/10.1594/PANGAEA.963462

Microzooplankton (microZP, protists) and mesozooplankton (mesoZP, metazoans) abundances and biomass as well as presence of domoic acid (DA, phycotoxin) during the mesocosm experiment in the Canary Islands in autumn 2019. Depth-integrated (0-2.5m) water samples were taken over the course of 33 days, in 2-day intervals for microZP and mesoZP and 4-day intervals for DA. MicroZP was assessed by Utermöhl light microscopy and its biomass estimated using biovolume to carbon conversion factors from the literature. MesoZP samples were split into three size fractions (55-200, 200-500 and >500 µm), preserved with 70% ethanol and assessed under a stereo microscope. For biomass, mesoZP were measured in an element analyser. MesoZP data is provided for copepods only (dominant group) and all metazoan zooplankton combined (mainly copepods and appendicularians). For DA, particulate matter was filtered (>0.7µm) and analysed via liquid chromatography and tandem mass spectrometry. The upwelling treatment started on day 6. ...