Nutrient release from dry and wet Saharan dust deposition ...

Dry and wet Saharan dust deposition incubation experiments were conducted in the tropical North Atlantic Ocean at 12°N to study the nutrient release of Saharan dust under oligotrophic seawater conditions with possible fertilization effects on the phytoplankton. Low and high amounts of Saharan dust d...

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Bibliographic Details
Main Author: Korte, Laura F
Format: Dataset
Language:English
Published: PANGAEA 2019
Subjects:
Event label
DEPTH, water
Day of experiment
Comment
Experimental treatment
Phosphate
Phosphate, standard deviation
Silicate
Silicate, standard deviation
Nitrate
Nitrate, standard deviation
Iron, dissolved
Iron, dissolved, standard deviation
Carbon, organic, particulate
Carbon, organic, particulate, standard deviation
Synechococcus spp.
Synechococcus spp., standard deviation
Carbon, organic, dissolved
Carbon, organic, dissolved, standard deviation
Phytoplankton, pico eukaryotic
Phytoplankton, pico eukaryotic, standard deviation
Incubation
TRAACS Gas Segmented Continuous Flow Analyser
Flow injection analysis
Thermo-Interscience Flash EA112 Series NC analyzer
Flow cytometry Accuri C6
Continuous flow analysis, after Stoll et al. 2001
JC134
James Cook
North Atlantic
Online Access:https://dx.doi.org/10.1594/pangaea.898138
https://doi.pangaea.de/10.1594/PANGAEA.898138
Description
Summary:Dry and wet Saharan dust deposition incubation experiments were conducted in the tropical North Atlantic Ocean at 12°N to study the nutrient release of Saharan dust under oligotrophic seawater conditions with possible fertilization effects on the phytoplankton. Low and high amounts of Saharan dust deposition from two different dust sources (paleo-lake and sand dune) were used from which the dust's particle sizes were adjusted to resemble dust that is naturally deposited over the ocean at the experiment sites. For wet dust deposition, the dust was pre-leached in acidified 'artificial rainwater' (H2SO4) for 16 to 24 hours, mimicking acid cloud processing at different pH values. Experiments were run up to eight days. Daily nutrient measurements of phosphate (PO43-), silicate (SiO44-), nitrate (NO3-) and cell abundances were performed in addition to measurements of concentrations of total dissolved iron (DFe) and particulate organic carbon (POC) at the start and at the end of the experiments. A significant ...

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