de.pangaea.dataset967722 und dataset PANGAEA
info@pangaea.de
https://www.pangaea.de/ information pointOfContact 2026-02-27T08:56:02Z https://doi.pangaea.de/10.1594/PANGAEA.967722 <gco:CharacterString>The effect of light, iron and manganese supply on phytoplankton community composition in the Weddell Sea</gco:CharacterString> 2024-08-13T00:01:19 publication https://doi.org/10.1594/PANGAEA.967722 Balaguer, Jenna
jbalaguer@geomar.de
https://orcid.org/0000-0001-9330-2275 information author Koch, Florian
florian.koch@awi.de
https://orcid.org/0000-0001-7107-4160 information author Trimborn, Scarlett
scarlett.trimborn@awi.de
https://orcid.org/0000-0003-1434-9927 information author PANGAEA
info@pangaea.de
https://www.pangaea.de/ information publisher tableDigital 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 primary production in the Weddell Sea. Two Fe-Mn-light bottle amendment 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 25m depth to fill polycarbonate bottles. The Control treatment consisted 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 2,5L PC bottles under 2 light regimes (30 and 100 µmol photon m-2 s-1). After on average 7 days, samples for chlorophyll a content, particulate organic carbon, primary production flow cytometry and light microscopy were taken to detect FeMn co-limitation effect on species composition and primary production. While results showed with high confidence that both communities were Fe-limited, no evidence was found that low light provoked a stronger response to Fe supply. Nevertheless, under low light, microscopic analysis at both locations revealed Fe-Mn co-limitation of a key phytoplankton group: Fragilariopsis sp., which numerically dominated the diatom communities. Our findings highlight that in response to light limitation, some key species may suffer from Fe-Mn co-limitation with subsequent implications for the biological carbon pump. completed Balaguer, Jenna
jbalaguer@geomar.de
https://orcid.org/0000-0001-9330-2275 information principalInvestigator Diatom assemblage Primary production Trace metal Weddell Sea theme <gco:CharacterString>PANGAEA Keyword List</gco:CharacterString> 1995-01-01 creation PANGAEA
info@pangaea.de
https://www.pangaea.de/ information pointOfContact SPP1158 Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas theme <gco:CharacterString>PANGAEA Project List</gco:CharacterString> 1995-01-01 creation PANGAEA
info@pangaea.de
https://www.pangaea.de/ information pointOfContact copyright copyright CC-BY-4.0: Creative Commons Attribution 4.0 International textTable und geoscientificInformation -30.38305 -30.00196 -76.09976 -70.41772 2021-02-08T21:18:57 2021-02-28T21:39:53 Event label thematicClassification Type of study thematicClassification Treatment: nutrients thematicClassification Treatment: light intensity physicalMeasurement µmol/m**2/s µmol/m**2/s Incubation duration physicalMeasurement days days Size fraction thematicClassification Chlorophyll a physicalMeasurement Measured µg/l µg/l Carbon, organic, particulate, population yield physicalMeasurement Measured µg/ml µg/ml text/tab-separated-values unknown https://doi.pangaea.de/10.1594/PANGAEA.967722?format=textfile download dataset The data set was checked for completeness, correctness, and consistency of metainformation. Validity of used methods was checked and - if applicable - precision and range of data. EVENT LABEL: PS124_5-5 * LATITUDE START: -70.419610 * LONGITUDE START: -30.001960 * LATITUDE END: -70.417720 * LONGITUDE END: -30.011350 * DATE/TIME START: 2021-02-08T21:18:57 * DATE/TIME END: 2021-02-09T02:55:56 * ELEVATION START: -4488.8 m * ELEVATION END: -4487.3 m * O2A Registry URI: https://registry.o2a-data.de/items/3202 * LOCATION: Weddell Sea * CAMPAIGN: PS124 * BASIS: Polarstern * METHOD/DEVICE: In situ pump Responsible: C. Voelkner 2021-02-08T21:18:57 EVENT LABEL: PS124_68-1 * LATITUDE START: -76.099760 * LONGITUDE START: -30.302650 * LATITUDE END: -76.095310 * LONGITUDE END: -30.383050 * DATE/TIME START: 2021-02-28T17:55:04 * DATE/TIME END: 2021-02-28T21:39:53 * ELEVATION START: -467.1 m * ELEVATION END: -470.9 m * O2A Registry URI: https://registry.o2a-data.de/items/3202 * LOCATION: Weddell Sea * CAMPAIGN: PS124 * BASIS: Polarstern * METHOD/DEVICE: In situ pump Responsible: Ch. Voelkner; SL=36m 2021-02-28T17:55:04 Related to <gco:CharacterString>Effect of iron and manganese supply on a natural phytoplankton community of the Weddell Sea and further consequence for carbon export</gco:CharacterString> 2023-01-01 publication https://doi.org/10.1594/PANGAEA.957278 Balaguer, Jenna
jbalaguer@geomar.de
https://orcid.org/0000-0001-9330-2275 information author Koch, Florian
florian.koch@awi.de
https://orcid.org/0000-0001-7107-4160 information author Flintrop, Clara https://orcid.org/0000-0002-5711-0521 information author Völkner, Christian
christian.voelkner@awi.de
author Iversen, Morten Hvitfeldt
Morten.Iversen@awi.de
https://orcid.org/0000-0002-5287-1110 information author Trimborn, Scarlett
scarlett.trimborn@awi.de
https://orcid.org/0000-0003-1434-9927 information author documentDigital