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Lischka, Silke; Ayón, Patricia; Pinedo Arteaga, Elda Luz; Schukat, Anna; Taucher, Jan; Kiko, Rainer; Hauss, Helena; Dorschner, Sabrina; Hagen, Wilhelm; Segura-Noguera, Mariona (2022): Response of zooplankton community succession and trophic links to simulated upwelling conditions during a mesocosm experiment in the coastal upwelling off Callao Bay (Peru) in austral summer 2017 (KOSMOS 2017 Peru mesocosm study) [dataset bundled publication]. PANGAEA, https://doi.org/10.1594/PANGAEA.947833

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Published: 2022-09-01 • DOI registered: 2022-11-03

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Abstract:
Increasing upwelling intensity and shoaling of the oxygen minimum zone (OMZ) is projected for Eastern Boundary Upwelling Systems (EBUSs) under ocean warming which may have severe consequences for mesopelagic food webs, trophic transfer, and fish production also in the Humboldt Current Upwelling System (HUS). To improve our mechanistic understanding, from February 23, 2017 until April 14, 2017 we performed a 50 days mesocosm experiment in the northern HUS (off Callao Bay, Peru) and monitored the zooplankton development prior to and following a simulated upwelling event through the addition of deeper water of two different OMZ-influenced subsurface waters to four of in total eight mesocosms. To elucidate plankton dynamics and trophic relationships, we followed the temporal development of the mesozooplankton community in relation to that of phytoplankton, analyzed the fatty acid composition and gut fluorescence of dominant copepods, and determined the stable isotope (SI) and elemental composition (C:N) of dominant zooplankton taxa. Zooplankton samples were collected from the mesocosms over the entire experiment duration using an Apstein net (17 cm diameter, 100 µm mesh) to determine abundance and taxonomic composition of the zooplankton community, and to analyze fatty acid composition, gut fluorescence and elemental composition of dominant zooplankton. Furthermore, abundance and biomass of zooplankton groups was estimated from scanned ZooScan images.
Keyword(s):
Abundance; Biomass; Gut fluorescence; Humboldt Current System; Lipid; mesocosm experiment; Oxygen Minimun zone; Stable isotopes; Zooplankton
Supplement to:
Ayón, Patricia; Pinedo Arteaga, Elda Luz; Schukat, Anna; Taucher, Jan; Kiko, Rainer; Hauss, Helena; Dorschner, Sabrina; Hagen, Wilhelm; Segura-Noguera, Mariona; Lischka, Silke (2023): Zooplankton community succession and trophic links during a mesocosm experiment in the coastal upwelling off Callao Bay (Peru). Biogeosciences, 20(5), 945-969, https://doi.org/10.5194/bg-20-945-2023
Project(s):
Climate - Biogeochemistry Interactions in the Tropical Ocean (SFB754)
Coastal Upwelling System in a Changing Ocean (CUSCO)
Funding:
Agence Nationale de la Recherche (ANR), grant/award no. ANR-19-MPGA-0012: Make Our Planet Great Again grant
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
German Research Foundation (DFG), grant/award no. 27542298: Climate - Biogeochemistry Interactions in the Tropical Ocean
German Research Foundation (DFG), grant/award no. RI-598/9-1: Leibniz Award 2012
Coverage:
Latitude: -12.055000 * Longitude: -77.235000
Date/Time Start: 2017-02-23T00:00:00 * Date/Time End: 2017-04-14T00:00:00
Event(s):
KOSMOS_2017_Peru * Latitude: -12.055000 * Longitude: -77.235000 * Date/Time Start: 2017-02-23T00:00:00 * Date/Time End: 2017-04-10T00:00:00 * Campaign: KOSMOS_2017 (KOSMOS Peru) * Method/Device: Mesocosm experiment (MESO)
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Size:
5 datasets

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Datasets listed in this bundled publication

  1. Lischka, S; Ayón, P; Pinedo Arteaga, EL et al. (2022): KOSMOS 2017 Peru mesocosm study: Abundance of zooplankton taxa determined by ZooScan. https://doi.org/10.1594/PANGAEA.947823
  2. Lischka, S; Ayón, P; Pinedo Arteaga, EL et al. (2023): KOSMOS 2017 Peru mesocosm study: Biomass of zooplankton taxa determined by ZooScan. https://doi.org/10.1594/PANGAEA.947826
  3. Lischka, S; Ayón, P; Pinedo Arteaga, EL et al. (2023): KOSMOS 2017 Peru mesocosm study: Zooplankton species/groups abundance. https://doi.org/10.1594/PANGAEA.947827
  4. Lischka, S; Ayón, P; Pinedo Arteaga, EL et al. (2023): KOSMOS 2017 Peru mesocosm study: Fatty acid composition for Paracalanus sp. and Hemicyclops sp. https://doi.org/10.1594/PANGAEA.947830
  5. Lischka, S; Ayón, P; Pinedo Arteaga, EL et al. (2023): KOSMOS 2017 Peru mesocosm study: Gut fluorescence and C/N ratio of Paracalanus sp. https://doi.org/10.1594/PANGAEA.947832