Stable isotopes and mol% of amino acids in 3-200 µm seston at surface during METEOR cruise M174

DOI

The Amazon river accounts annually for 20% of riverine discharge into the global ocean with strong seasonal variations. This lens of freshwater spreads at surface as a plume, and can reach as far as the Caribbean. During this journey, the changing physicochemical characteristics of the aging plume define contrasting plankton habitats. These habitats select for communities with varying degrees of complexity of the plankton food web. During RV METEOR cruise M174 (Voss, 2021) we studied the dominant trophic function at the base of the food web (autotrophs vs mixotrophs) using stable isotopes of nitrogen in specific amino acids as well as bulk isotopes of carbon and nitrogen. This dataset contains the nitrogen signatures of 12 amino acids in δ notation (δ15N, ‰ vs N2 in air), the mol% of 12 amino acids and the carbon (δ13C, ‰ vs VPDB) and nitrogen isotopes in bulk samples at surface as well as environmental data and phytoplankton community structure. Seston was separated into two size fractions, the picoseston comprised of particles below ca. 3µm (https://doi.pangaea.de/10.1594/PANGAEA.971293), and a mixture of nano- and microseston with particles above ca. 3µm (this dataset).

Identifier
DOI https://doi.pangaea.de/10.1594/PANGAEA.971279
Related Identifier References https://doi.pangaea.de/10.1594/PANGAEA.971293
Related Identifier References https://doi.org/10.1594/PANGAEA.935041
Related Identifier References https://doi.org/10.1029/2004JC002419
Related Identifier References https://doi.org/10.1002/9783527613984
Related Identifier References https://doi.org/10.3389/fmars.2024.1287497
Related Identifier References https://doi.org/10.3389/fmars.2019.00112
Related Identifier References https://doi.org/10.4225/15/59FFF1C5EA8FC
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.971279
Provenance
Creator Fernández-Carrera, Ana ORCID logo; Steinkopf, Markus; Liskow, Iris; Wodarg, Dirk; Voss, Maren ORCID logo; Loick-Wilde, Natalie
Publisher PANGAEA
Publication Year 2024
Funding Reference Deutsche Forschungsgemeinschaft, Bonn https://doi.org/10.13039/501100001659 Crossref Funder ID 439440452 https://gepris.dfg.de/gepris/projekt/439440452 Metabolismus des Stickstoffs in der Amazonasfahne und dem westlichen, tropischen Nordatlantik (MeNARP); Deutsche Forschungsgemeinschaft, Bonn https://doi.org/10.13039/501100001659 Crossref Funder ID GPF19-1-13 N-Amazon
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 1172 data points
Discipline Earth System Research
Spatial Coverage (-56.639W, -0.598S, -44.812E, 15.080N); North Atlantic Ocean; South Atlantic Ocean
Temporal Coverage Begin 2021-04-21T07:21:11Z
Temporal Coverage End 2021-05-13T21:57:46Z