Effect of iron and manganese supply on a natural phytoplankton community of the Weddell Sea and further consequence for carbon export ...

This study highlights the importance of manganese (Mn) next to iron (Fe) for the growth of specific Southern Ocean phytoplankton groups with important implications for carbon export in the Weddell Sea. A Fe-Mn bottle amendment experiment and an aggregation experiment were performed with a natural ph...

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Bibliographic Details
Main Authors: Balaguer, Jenna, Koch, Florian, Flintrop, Clara, Völkner, Christian, Iversen, Morten Hvitfeldt, Trimborn, Scarlett
Format: Dataset
Language:English
Published: PANGAEA 2023
Subjects:
Aggregation
carbon export
iron
Laboratory experiment
manganese
Phytoplankton
RV Polarstern
Weddel Sea
Event label
Type of study
Treatment nutrients
Incubation duration
Size fraction
Chlorophyll a
Carbon, organic, particulate, population yield
Primary production of carbon
In situ pump
Laboratory fluorometer, Turner, Trilogy
Carbon and hydrogen and nitrogen and sulfur and oxygen CHNSO elemental analyzer, EuroVector, EA3000
Liquid scintillation analyzer LSA, Perkin Elmer, Tri-Carb 2900TR
PS124
Polarstern
Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas SPP1158
The Ocean Floor – Earth's Uncharted Interface OceanFloor_EUI
Antarc*
Antarctic
Arctic
Sea ice
Southern Ocean
Weddell Sea
Online Access:https://dx.doi.org/10.1594/pangaea.957278
https://doi.pangaea.de/10.1594/PANGAEA.957278
Description
Summary:This study highlights the importance of manganese (Mn) next to iron (Fe) for the growth of specific Southern Ocean phytoplankton groups with important implications for carbon export in the Weddell Sea. A Fe-Mn bottle amendment experiment and an aggregation experiment were performed with a natural phytoplankton community during Polarstern expedition PS124 in 2021 in the Weddell Sea. At this location, seawater was pumped (using trace metals clean techniques) from 25 m depth to fill polycarbonate bottles. The Control treatment consist of the sampled seawater without any trace metals addition, while the other three treatments were enriched with either FeCl₃ alone (0.5 nM; +Fe treatment) or MnCl₂ alone (1 nM; +Mn treatment) or both trace metals together (+FeMn treatment). All treatments were done in triplicate 2.5 L PC bottles. After on average 7 days, samples for chlorophyll a content, particulate organic carbon and primary production were taken to detect FeMn co-limitation effect on species composition, primary ...

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