Amino acid and carbohydrate patterns across Fram Strait during POLARSTERN cruise PS107

Amino acids (AA) and carbohydrates (CHO) are produced by phytoplankton as part of the particulate organic carbon (POC) fraction, and can subsequently be released into the dissolved organic carbon (DOC) pool serving as food for heterotrophs. We investigated changes in quantity and quality of POC and...

Full description

Bibliographic Details
Main Authors: Grosse, Julia, Nöthig, Eva-Maria, Torres-Valdés, Sinhue, Engel, Anja
Format: Dataset
Language:English
Published: PANGAEA - Data Publisher for Earth & Environmental Science 2021
Subjects:
Arctic Ocean
degradation
Event label
Sample code/label
DATE/TIME
LATITUDE
LONGITUDE
DEPTH, water
Temperature, water
Salinity
Density, sigma-theta 0
Carbon, organic, dissolved
Nitrogen, organic, dissolved
Carbon, organic, particulate
Nitrate
Phosphate
Nitrite
Silicate
Ammonium
Aspartic acid and Asparagine
Glutamine and Glutamic acid
Serine
Glycine
Tyrosine
Arginine
Alanine
gamma-Aminobutyric acid
Valine
Isoleucine
Phenylalanine
Leucine
Amino acids, dissolved, Carbon
Amino acids
Fucose
Rhamnose
Galactosamine
Arabinose
Glucosamine
Galactose
Glucose
Mannose/Xylose
Gluconic acid
Muramic acid
Galacturonic acid
Glucuronic acid
Carbohydrates, dissolved
Carbohydrates, particulate
CTD/Rosette
High Performance Liquid Chromatography HPLC ortho-phthaldialdehyde derivatization, Agilent 1260
High performance anion exchange chromatography with pulsed amperometric detection HPAEC-PAD, Dionex 3000
PS107
Polarstern
FRontiers in Arctic marine Monitoring FRAM
Understanding the links between pelagic microbial ecosystems and organic matter cycling in the changing Arctic μARC Micro-ARC
Arctic
Fram Strait
Phytoplankton
Online Access:https://dx.doi.org/10.1594/pangaea.932068
https://doi.pangaea.de/10.1594/PANGAEA.932068
Description
Summary:Amino acids (AA) and carbohydrates (CHO) are produced by phytoplankton as part of the particulate organic carbon (POC) fraction, and can subsequently be released into the dissolved organic carbon (DOC) pool serving as food for heterotrophs. We investigated changes in quantity and quality of POC and DOC, individual AA and individual CHO across Fram Strait in summer 2017. We evaluate the organic matter processing and show that AA and CHO composition substantially differs between the particulate and dissolved fractions. The particulate fraction was enriched in essential AA and the CHO galactose, xylose/mannose, and muramic acid. In the dissolved fraction non-essential AA, several neutral CHO, and acidic and amino CHO were enriched. Our results are important for the future when changing conditions in the Central Arctic Ocean (Atlantification, warming, decreasing ice concentrations) may increase primary production and consequently degradation. The AA and CHO signatures left behind could be used as tracers after the fact to infer changes in microbial loop processes and food web interactions. : #0 means below detection limit

Similar Items