Fernández-Carrera, Ana; Steinkopf, Markus; Liskow, Iris; Wodarg, Dirk; Voss, Maren; Loick-Wilde, Natalie: Stable isotopes and mol% of amino acids in 3-200 µm seston at surface during METEOR cruise M174 [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.971279 (dataset in review)
Abstract:
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).
Keyword(s):
Supplement to:
Fernández-Carrera, Ana; et al. (submitted): Mixotrophy emerges as the optimal strategy in mature waters of the Amazon River plume.
Related to:
Fernández-Carrera, Ana; Steinkopf, Markus; Liskow, Iris; Wodarg, Dirk; Voss, Maren; Loick-Wilde, Natalie: Stable isotopes and mol% of amino acids in 0.2-3 µm seston at surface during METEOR cruise M174 [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.971293
Voss, Maren (2021): Master tracks in different resolutions of METEOR cruise M174, Las Palmas - Emden, 2021-04-12 - 2021-05-29 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.935041
References:
Bricaud, Annick; Claustre, Hervé; Ras, Joséphine; Oubelkheir, Kadija (2004): Natural variability of phytoplanktonic absorption in oceanic waters: Influence of the size structure of algal populations. Journal of Geophysical Research: Oceans, 109(C11), 2004JC002419, https://doi.org/10.1029/2004JC002419
Grasshoff, Klaus; Kremling, Klaus; Ehrhardt, M (1999): Methods of Seawater Analysis. Wiley, https://doi.org/10.1002/9783527613984
Pham, Anh H; Choisnard, Noémie; Fernández-Carrera, Ana; Subramaniam, Ajit; Strope, Erica K; Carpenter, Edward J; Voss, Maren; Montoya, Joseph P (2024): Planktonic habitats in the Amazon Plume region of the Western Tropical North Atlantic. Frontiers in Marine Science, 11, 1287497, https://doi.org/10.3389/fmars.2024.1287497
Weber, Sarah C; Subramaniam, Ajit; Montoya, Joseph P; Doan-Nhu, Hai; Nguyen-Ngoc, Lam; Dippner, Joachim W; Voss, Maren (2019): Habitat Delineation in Highly Variable Marine Environments. Frontiers in Marine Science, 6, 112, https://doi.org/10.3389/fmars.2019.00112
Wright, Simon (2008): Chemtax version 1.95 for calculating the taxonomic composition of phytoplankton populations [dataset]. Australian Antarctic Data Centre, https://doi.org/10.4225/15/59FFF1C5EA8FC
Funding:
Deutsche Forschungsgemeinschaft, Bonn (DFG), grant/award no. 439440452: Metabolismus des Stickstoffs in der Amazonasfahne und dem westlichen, tropischen Nordatlantik (MeNARP)
Coverage:
Median Latitude: 5.278214 * Median Longitude: -50.524344 * South-bound Latitude: -0.597550 * West-bound Longitude: -56.639300 * North-bound Latitude: 15.080400 * East-bound Longitude: -44.811720
Date/Time Start: 2021-04-21T07:21:11 * Date/Time End: 2021-05-13T21:57:46
Minimum Elevation: -5506.0 m * Maximum Elevation: -15.0 m
Event(s):
M174_7-4 * Latitude: 2.554400 * Longitude: -44.811720 * Date/Time: 2021-04-21T07:21:11 * Elevation: -4029.0 m * Location: North Atlantic Ocean * Campaign: M174 * Basis: Meteor (1986) * Method/Device: Water pump (PUMP)
M174_8-7 * Latitude: 1.647180 * Longitude: -45.854580 * Date/Time: 2021-04-21T18:53:15 * Elevation: -3020.0 m * Location: North Atlantic Ocean * Campaign: M174 * Basis: Meteor (1986) * Method/Device: Water pump (PUMP)
M174_9-7 * Latitude: -0.121700 * Longitude: -47.731100 * Date/Time: 2021-04-23T08:16:24 * Elevation: -36.0 m * Location: South Atlantic Ocean * Campaign: M174 * Basis: Meteor (1986) * Method/Device: Water pump (PUMP)
Parameter(s):
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
1172 data points