Nano- and microplankton, chlorophyll a, b and c, and macronutrients from Ana Maria Gayoso cruise in the South western Atlantic during late spring 2021

DOI

The abundance of protistan plankton (cell size > 5 µm), along with the concentrations of photosynthetic pigments and dissolved inorganic nutrients, was assessed in the Southwestern Atlantic (SWA, 36-48ºS, 64-54ºW). This study covered three regions: the outer Patagonian shelf, the slope waters in the core of the Malvinas Current, and the adjacent open ocean in the Argentine Basin. Water samples from surface (5 m depth) and subsurface (10-30 m depth, in the subsurface chlorophyll maxima) layers were collected using Niskin bottles during late spring (November 2021) on the Ana Maria Gayoso oceanographic cruise aboard the vessel Bernardo Houssay, totaling 10 sampling stations. Plankton samples were analyzed under an optical microscope using the inverted microscope technique with sedimentation chambers. Cells were enumerated and identified to the species, genus, or family level and subsequently categorized into taxonomic groups: diatoms, phototrophic (including mixotrophic) and heterotrophic dinoflagellates, coccolithophores, nanoflagellates, and ciliates. Cell biovolume was determined using geometric shapes, and carbon content was calculated using established carbon-to-volume values. The concentrations of chlorophyll a, b, and c, along with nitrite, nitrate, ammonium, phosphate, and silicate, were determined using a spectrophotometer. The region under study supports numerous commercially valuable fish species, highlighting the importance of documenting the physico-chemical factors influencing plankton biodiversity. These records are vital for understanding potential changes in population and community dynamics, which could subsequently impact the productivity of marine ecosystems.

Identifier
DOI https://doi.org/10.1594/PANGAEA.971565
Related Identifier References https://doi.org/10.1046/j.1529-8817.1999.3520403.x
Related Identifier References https://doi.org/10.1016/S0015-3796(17)30778-3
Related Identifier References https://doi.org/10.4319/lo.2000.45.3.0569
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.971565
Provenance
Creator Ferronato, Carola ORCID logo; Guinder, Valeria A ORCID logo; Gilabert, Azul; Lopez-Abbate, Celeste; Nocera, Ariadna; Loizaga, Rocio; D'Agostino, Valeria
Publisher PANGAEA
Publication Year 2024
Funding Reference Horizon 2020 https://doi.org/10.13039/501100007601 Crossref Funder ID 872690 https://doi.org/10.3030/872690 Coastal ecosystem carbon balance in times of rapid glacier melt (CoastCarb); Ministerio de Ciencia, Tecnología e Innovación, Argentina https://doi.org/10.13039/501100003033 Crossref Funder ID PIDT_A6 BioMMAr from the national initiative Pampa Azul; National Scientific and Technical Research Council https://doi.org/10.13039/501100002923 Crossref Funder ID RESOL-2018-2686-APN-DIR#CONICET CONICET Doctoral Fellowship; National Scientific and Technical Research Council https://doi.org/10.13039/501100002923 Crossref Funder ID RESOL-2021-722-APN-DIR#CONICET CONICET-DAAD academic exchange project: FitoxNorPat (call-2020)
Rights Creative Commons Attribution 4.0 International; Data access is restricted (moratorium, sensitive data, license constraints); https://creativecommons.org/licenses/by/4.0/
OpenAccess false
Representation
Resource Type Dataset
Format text/tab-separated-values
Size 400 data points
Discipline Earth System Research
Spatial Coverage (-61.500W, -45.970S, -55.100E, -38.800N)
Temporal Coverage Begin 2021-11-16T11:46:00Z
Temporal Coverage End 2021-11-22T13:46:00Z