Nano- and microplankton in the northern Patagonian shelf (SW South Atlantic) during austral spring and summer


The species composition and structure (e.g. abundance and biomass) of protistan plankton (cell size > 5 µm) and in situ chorophyll a were assessed in a shallow (<50 m depth) inner shelf area of the Argentine Shelf called El Rincón (38º-41°S). Surface water samples (5 m depth) for plankton quantification were taken with Niskin bottles during four oceanographic cruises (two in early austral spring and two in late austral summer- early fall), onboard the vessel B. Houssay accounting for a total of 36 sampling stations. These samples were analyzed under optical microscopy following the inverted microscope technique with sedimentation chambers. Cells enumeration and identification was made up to species, genus or family level, which were afterward categorized in taxonomical groups: diatoms, dinoflagellates, coccolithophores and nanoflagellates. Carbon content was calculated following the method of Menden-Deuer et al. (2000) in which biovolume was estimated assigning a geometrical shape to each species (Hillebrand et al., 1999). The biomass is the result of multiplying the carbon content of a species by its abundance in the sample. The studied area supports important fishes of commercial interest, therefore plankton biodiversity records are neccesary to understand possible shifts at the population and community levels that might have cascading effects on marine ecosystems' productivity.

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Metadata Access
Creator Ferronato, Carola; Guinder, Valeria A; Chidichimo, Maria Paz; López-Abbate, Celeste; Amodeo, Martín
Publisher PANGAEA
Publication Year 2022
Funding Reference Agencia Nacional de Promoción Científica y Tecnológica, PICT 2013 1681; Agencia Nacional de Promoción Científica y Tecnológica, PICT 2016 0830; Agencia Nacional de Promoción Científica y Tecnológica, PICT 2017 2386; German Academic Exchange Service, DA 13 04; National Scientific and Technical Research Council, PUE 2016 22920160100057CO
Rights Creative Commons Attribution 4.0 International;
OpenAccess true
Language English
Resource Type Dataset
Format text/tab-separated-values
Size 16722 data points
Discipline Earth System Research
Spatial Coverage (-62.387W, -41.497S, -60.529E, -39.079N); Argentine Continental Shelf; Patagonian shelf, Argentina
Temporal Coverage Begin 2013-03-11T00:00:00Z
Temporal Coverage End 2016-10-07T00:00:00Z