<?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_993604</Entry_ID>
<Entry_Title>Seawater carbonate chemistry and microbial community structure</Entry_Title>
<Data_Set_Citation>
<Dataset_Creator>Marx, Lukas; Hale, Michelle; Cael, B B; Reynolds, Sarah</Dataset_Creator>
<Dataset_Title>Seawater carbonate chemistry and microbial community structure</Dataset_Title>
<Dataset_Release_Date>2026-04-14</Dataset_Release_Date>
<Dataset_Publisher>PANGAEA</Dataset_Publisher>
<Data_Presentation_Form>Dataset</Data_Presentation_Form>
<Online_Resource>https://doi.pangaea.de/10.1594/PANGAEA.993604</Online_Resource>
</Data_Set_Citation>
<Personnel>
<Role>Investigator</Role>
<First_Name>Lukas</First_Name>
<Last_Name>Marx</Last_Name>
<Email>lukas.marx@whoi.edu</Email>
</Personnel>
<Personnel>
<Role>Investigator</Role>
<First_Name>Yan</First_Name>
<Last_Name>Yang</Last_Name>
<Email>yangyan@xmu.edu.cn</Email>
</Personnel>
<Discipline>
<Discipline_Name>Earth Science</Discipline_Name>
</Discipline>
<Parameters>
<Detailed_Variable>Type of study</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>Sample ID</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>Date</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>Identification</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>Treatment</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>Temperature, water</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>Salinity</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>pH, seawater scale</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>Nitrate</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>Nitrite</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>Silicate</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>Phosphate</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>Carbon, organic, particulate</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>Nitrogen, organic, particulate</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>Phosphorus, particulate</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>Organic matter, particulate</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>Alkalinity, total</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>Carbon, inorganic, dissolved</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>Chlorophyll a</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>Pyropheophytin a</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>Synechococcus</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>Cryptophytes</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>Picoeukaryotes</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>Nanoeukaryotes</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>Coccolithophores</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>Algae abundance</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>Low nucleic acid bacteria</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>High nucleic acid bacteria</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>Bacteriophages</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>Carbonate system computation flag</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>pH, total scale</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>Carbon dioxide</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>Fugacity of carbon dioxide (water) at sea surface temperature (wet air)</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>Bicarbonate ion</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>Carbonate ion</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>Aragonite saturation state</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>Calcite saturation state</Detailed_Variable>
</Parameters>
<ISO_Topic_Category>geoscientificInformation</ISO_Topic_Category>
<Keyword>Biomass/Abundance/Elemental composition</Keyword>
<Keyword>Bottles or small containers/Aquaria (&lt;20 L)</Keyword>
<Keyword>Coast and continental shelf</Keyword>
<Keyword>Community composition and diversity</Keyword>
<Keyword>Entire community</Keyword>
<Keyword>Experiment</Keyword>
<Keyword>Laboratory experiment</Keyword>
<Keyword>Langstone_Harbour</Keyword>
<Keyword>Macro-nutrients</Keyword>
<Keyword>North Atlantic</Keyword>
<Keyword>Ocean acidification</Keyword>
<Keyword>Pelagos</Keyword>
<Keyword>Temperate</Keyword>
<Keyword>Temperature</Keyword>
<Sensor_Name>
<Long_Name>Calculated using seacarb after Nisumaa et al. (2010)</Long_Name>
</Sensor_Name>
<Temporal_Coverage>
<Start_Date>2021-09-07</Start_Date>
<Stop_Date>2021-09-07</Stop_Date>
</Temporal_Coverage>
<Data_Set_Progress>Complete</Data_Set_Progress>
<Spatial_Coverage>
<Southernmost_Latitude>50.8167</Southernmost_Latitude>
<Northernmost_Latitude>50.8167</Northernmost_Latitude>
<Westernmost_Longitude>-1.0</Westernmost_Longitude>
<Easternmost_Longitude>-1.0</Easternmost_Longitude>
</Spatial_Coverage>
<Project>
<Short_Name>OA-ICC</Short_Name>
<Long_Name>Ocean Acidification International Coordination Centre</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>7093 data points</Distribution_Size>
<Distribution_Format>text/tab-separated-values</Distribution_Format>
</Distribution>
<Reference>Marx, Lukas; Hale, Michelle; Cael, B B; Reynolds, Sarah (2026): Acute microbial and nutrient responses to elevated temperature and pCO2: A coastal UK microcosm study. Regional Studies in Marine Science, 95, 104814, https://doi.org/10.1016/j.rsma.2026.104814</Reference>
<Reference>Nisumaa, Anne-Marin; Pesant, Stephane; Bellerby, Richard G J; Delille, Bruno; Middelburg, Jack J; Orr, James C; Riebesell, Ulf; Tyrrell, Toby; Wolf-Gladrow, Dieter A; Gattuso, Jean-Pierre (2010): EPOCA/EUR-OCEANS data compilation on the biological and biogeochemical responses to ocean acidification. Earth System Science Data, 2(2), 167-175, https://doi.org/10.5194/essd-2-167-2010</Reference>
<Reference>Yang, Yan; Brockmann, Patrick; Galdino, Carolina; Schindler, Uwe; Gazeau, Frédéric (2024): An update of data compilation on the biological response to ocean acidification and overview of the OA-ICC data portal. Earth System Science Data, 16(8), 3771-3780, https://doi.org/10.5194/essd-16-3771-2024</Reference>
<Reference>Yang, Yan; Hansson, L; Gattuso, Jean-Pierre (2016): Data compilation on the biological response to ocean acidification: an update. Earth System Science Data, 8(1), 79-87, https://doi.org/10.5194/essd-8-79-2016</Reference>
<Reference>Gattuso, Jean-Pierre; Epitalon, Jean-Marie; Lavigne, Héloïse; Orr, James; Gentili, Bernard; Hagens, Mathilde; Hofmann, Andreas; Mueller, Jens-Daniel; Proye, Aurélien; Rae, James; Soetaert, Karline (2024): seacarb: seawater carbonate chemistry with R. R package version 3.3.3. https://cran.r-project.org/web/packages/seacarb/index.html</Reference>
<Summary>In this microcosm study, we investigated how elevated temperature and pCO2, together with episodic nutrient pollution and a short-term marine heatwave, affect the nanoand picoplanktonic community of primary producers and subsequent changes in coastal biogeochemistry.
This dataset is included in the OA-ICC data compilation maintained in the framework of the IAEA Ocean Acidification International Coordination Centre (see https://oa-icc.ipsl.fr). Original data were provided by the author of the related paper (see Related to) to the OA-ICC data curator. In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Gattuso et al, 2024) was used to compute a complete and consistent set of carbonate system variables, as described by Nisumaa et al. (2010). In this dataset the original values were archived in addition with the recalculated parameters (see related PI). The date of carbonate chemistry calculation by seacarb is 2026-04-13. ** For all details see the full metadata description at "https://doi.pangaea.de/10.1594/PANGAEA.993604"!</Summary>
<Related_URL>
<URL>http://en.wikipedia.org/wiki/ISO_8601</URL>
<Description>Date</Description>
</Related_URL>
<Related_URL>
<URL>http://mel.xmu.edu.cn/en/</URL>
</Related_URL>
<Related_URL>
<URL>https://cran.r-project.org/web/packages/seacarb/index.html</URL>
<Description>seacarb: seawater carbonate chemistry with R. R package version 3.3.3</Description>
</Related_URL>
<Related_URL>
<URL>https://doi.org/10.1016/j.rsma.2026.104814</URL>
<Description>Acute microbial and nutrient responses to elevated temperature and pCO2: A coastal UK microcosm study</Description>
</Related_URL>
<Related_URL>
<URL>https://doi.org/10.5194/essd-16-3771-2024</URL>
<Description>An update of data compilation on the biological response to ocean acidification and overview of the OA-ICC data portal</Description>
</Related_URL>
<Related_URL>
<URL>https://doi.org/10.5194/essd-2-167-2010</URL>
<Description>Calculated using seacarb after Nisumaa et al. (2010)</Description>
</Related_URL>
<Related_URL>
<URL>https://doi.org/10.5194/essd-2-167-2010</URL>
<Description>EPOCA/EUR-OCEANS data compilation on the biological and biogeochemical responses to ocean acidification</Description>
</Related_URL>
<Related_URL>
<URL>https://doi.org/10.5194/essd-8-79-2016</URL>
<Description>Data compilation on the biological response to ocean acidification: an update</Description>
</Related_URL>
<Related_URL>
<URL>https://hdl.handle.net/10013/epic.32187.d001</URL>
<Description>Chlorophyll a</Description>
</Related_URL>
<Related_URL>
<URL>https://www.iaea.org/services/oa-icc/science-and-collaboration/data-access-and-management</URL>
<Description>OA-ICC</Description>
</Related_URL>
<Metadata_Name>DIF</Metadata_Name>
<Metadata_Version>9.4</Metadata_Version>
<DIF_Creation_Date>2026-04-14</DIF_Creation_Date>
<Last_DIF_Revision_Date>2026-07-15</Last_DIF_Revision_Date>
</DIF>
