<?xml version="1.0" encoding="UTF-8"?><!--*** Generated from internal PANGAEA metadata schema by dif.xslt ***--><DIF xsi:schemaLocation="http://gcmd.gsfc.nasa.gov/Aboutus/xml/dif/ http://gcmd.gsfc.nasa.gov/Aboutus/xml/dif/dif_v9.4.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://gcmd.gsfc.nasa.gov/Aboutus/xml/dif/">
<Entry_ID>PANGAEA_997313</Entry_ID>
<Entry_Title>Biogeochemistry of dissolved organic matter and phytoplankton communities along the West Antarctic Peninsula in summer 2023</Entry_Title>
<Data_Set_Citation>
<Dataset_Creator>Fisher, Ben J; Seidel, Michael; Waite, Nicole; Manning, Miah Lynne; Cappola, Michael; Dittmar, Thorsten; Schofield, Oscar; Poulton, Alex J; Henley, Sian Frances</Dataset_Creator>
<Dataset_Title>Biogeochemistry of dissolved organic matter and phytoplankton communities along the West Antarctic Peninsula in summer 2023</Dataset_Title>
<Dataset_Release_Date>2026-09-18</Dataset_Release_Date>
<Dataset_Publisher>PANGAEA</Dataset_Publisher>
<Data_Presentation_Form>Dataset</Data_Presentation_Form>
<Online_Resource>https://doi.pangaea.de/10.1594/PANGAEA.997313</Online_Resource>
</Data_Set_Citation>
<Discipline>
<Discipline_Name>Earth Science</Discipline_Name>
</Discipline>
<ISO_Topic_Category>geoscientificInformation</ISO_Topic_Category>
<Keyword>d13C</Keyword>
<Keyword>Dissolved Organic Matter</Keyword>
<Keyword>field observations</Keyword>
<Keyword>FT-ICR MS</Keyword>
<Keyword>Phytoplankton composition</Keyword>
<Keyword>ship-based</Keyword>
<Keyword>Southern Ocean</Keyword>
<Keyword>stoichiometry</Keyword>
<Temporal_Coverage>
<Start_Date>2023-01-04</Start_Date>
<Stop_Date>2023-01-28</Stop_Date>
</Temporal_Coverage>
<Data_Set_Progress>Complete</Data_Set_Progress>
<Spatial_Coverage>
<Southernmost_Latitude>-69.82935</Southernmost_Latitude>
<Northernmost_Latitude>-64.60813</Northernmost_Latitude>
<Westernmost_Longitude>-78.48554</Westernmost_Longitude>
<Easternmost_Longitude>-64.39954</Easternmost_Longitude>
</Spatial_Coverage>
<Project>
<Short_Name>Palmer-LTER</Short_Name>
<Long_Name>Palmer Long-Term Ecological Research</Long_Name>
</Project>
<Access_Constraints>unrestricted</Access_Constraints>
<Use_Constraints>CC-BY-4.0: Creative Commons Attribution 4.0 International</Use_Constraints>
<Data_Set_Language>English</Data_Set_Language>
<Data_Center>
<Data_Center_Name>
<Short_Name>PANGAEA</Short_Name>
<Long_Name>Data Publisher for Earth &amp; Environmental Science</Long_Name>
</Data_Center_Name>
<Data_Center_URL>https://www.pangaea.de/</Data_Center_URL>
<Personnel>
<Role>Data Center Contact</Role>
<First_Name>Michael</First_Name>
<Last_Name>Diepenbroek</Last_Name>
<Email>info@pangaea.de</Email>
<Contact_Address>
<Address>Leobener Str.</Address>
<City>Bremen</City>
<Province_or_State>Bremen</Province_or_State>
<Postal_Code>28359</Postal_Code>
<Country>Germany</Country>
</Contact_Address>
</Personnel>
</Data_Center>
<Distribution>
<Distribution_Media>online</Distribution_Media>
<Distribution_Size>2 datasets</Distribution_Size>
<Distribution_Format>application/zip</Distribution_Format>
</Distribution>
<Summary>As part of the Palmer LTER research program during a 24 day period across January 2023, we conducted oceanographic CTD sampling at 10 sites across the West Antarctic Peninsula (4 on the shelf, 6 on the coast), with a view to link different marine phytoplankton communities to distinct molecular signatures of solid phase extracted (SPE) dissolved organic matter. We include ultrahigh resolution mass spectrometry (Fourier-transform ion cyclotron resonance mass spectrometer, FT-ICR-MS) data, molecular indicies calculated from these data (IPhoto, IDeg, IBio), isotopic (SPE-DOM-d13c) and stoichiometric (SPE-DOC,SPE-DON,SPE-DOS,SPE-DOP) values. These parameters were then compared against the biovolume abundance of different phytoplankton groups, determined through Imaging Flow Cytobot (IFCB) analysis. Additionally, we include basic environmental data (DOC, TDN, Fluorescence, Temperature, Salinity).
This datasset comprises Molecular DOM composition from ultra-high resolution mass spectrometry (FT-ICR-MS) ** For all details see the full metadata description at "https://doi.pangaea.de/10.1594/PANGAEA.997313"! ** Supported by the Antarctic Science International Bursary, "Is Southern Ocean dissolved organic matter export influenced by phytoplankton community composition?" https://www.antarcticsciencebursary.org.uk</Summary>
<Related_URL>
<URL>https://pallter.marine.rutgers.edu/</URL>
<Description>Palmer-LTER</Description>
</Related_URL>
<Metadata_Name>DIF</Metadata_Name>
<Metadata_Version>9.4</Metadata_Version>
<DIF_Creation_Date>2026-09-18</DIF_Creation_Date>
<Last_DIF_Revision_Date>2026-09-18</Last_DIF_Revision_Date>
</DIF>
