<?xml version="1.0" encoding="UTF-8"?><resource xsi:schemaLocation="http://datacite.org/schema/kernel-4 http://schema.datacite.org/meta/kernel-4.3/metadata.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://datacite.org/schema/kernel-4"><identifier identifierType="URL">https://doi.pangaea.de/10.1594/PANGAEA.993632</identifier><creators><creator><creatorName>Welch, Zoe S</creatorName><givenName>Zoe S</givenName><familyName>Welch</familyName><affiliation affiliationIdentifierScheme="ROR" affiliationIdentifier="https://ror.org/02t274463">University of California, Santa Barbara</affiliation></creator><creator><creatorName>Kim, Sylvia M</creatorName><givenName>Sylvia M</givenName><familyName>Kim</familyName><affiliation affiliationIdentifierScheme="ROR" affiliationIdentifier="https://ror.org/02t274463">University of California, Santa Barbara</affiliation></creator><creator><creatorName>Liu, Michael</creatorName><givenName>Michael</givenName><familyName>Liu</familyName><affiliation affiliationIdentifierScheme="ROR" affiliationIdentifier="https://ror.org/02t274463">University of California, Santa Barbara</affiliation></creator><creator><creatorName>Bui, An</creatorName><givenName>An</givenName><familyName>Bui</familyName><affiliation affiliationIdentifierScheme="ROR" affiliationIdentifier="https://ror.org/02t274463">University of California, Santa Barbara</affiliation></creator><creator><creatorName>Grigolite, Jesse</creatorName><givenName>Jesse</givenName><familyName>Grigolite</familyName><affiliation affiliationIdentifierScheme="ROR" affiliationIdentifier="https://ror.org/02t274463">University of California, Santa Barbara</affiliation></creator><creator><creatorName>Jones, Janice L</creatorName><givenName>Janice L</givenName><familyName>Jones</familyName><affiliation affiliationIdentifierScheme="ROR" affiliationIdentifier="https://ror.org/02t274463">University of California, Santa Barbara</affiliation></creator><creator><creatorName>Iglesias-Rodríguez, M Débora</creatorName><givenName>M Débora</givenName><familyName>Iglesias-Rodríguez</familyName><affiliation affiliationIdentifierScheme="ROR" affiliationIdentifier="https://ror.org/02t274463">University of California, Santa Barbara</affiliation></creator></creators><titles><title>Seawater carbonate chemistry and biogeochemistry and composition of a phytoplankton community</title></titles><publisher>PANGAEA</publisher><publicationYear>2026</publicationYear><subjects><subject>Biomass/Abundance/Elemental composition</subject><subject>Bottles or small containers/Aquaria (&lt;20 L)</subject><subject>Coast and continental shelf</subject><subject>Community composition and diversity</subject><subject>Entire community</subject><subject>Laboratory experiment</subject><subject>North Pacific</subject><subject>Pelagos</subject><subject>Primary production/Photosynthesis</subject><subject>Temperate</subject><subject subjectScheme="Parameter">Type of study</subject><subject subjectScheme="Parameter">Treatment</subject><subject subjectScheme="Parameter">Condition</subject><subject subjectScheme="Parameter">Day of experiment</subject><subject subjectScheme="Parameter">Replicate</subject><subject subjectScheme="Parameter">Biogenic silica</subject><subject subjectScheme="Parameter">Carbon, organic, particulate</subject><subject subjectScheme="Parameter">Nitrogen, organic, particulate</subject><subject subjectScheme="Parameter">Carbon, inorganic, particulate</subject><subject subjectScheme="Parameter">Carbon, organic, particulate/Nitrogen, organic, particulate ratio</subject><subject subjectScheme="Parameter">Particulate inorganic carbon/particulate organic carbon ratio</subject><subject subjectScheme="Parameter">Biogenic silica/Carbon, organic, particulate</subject><subject subjectScheme="Parameter">Calcium</subject><subject subjectScheme="Parameter">Magnesium</subject><subject subjectScheme="Parameter">Phosphate</subject><subject subjectScheme="Parameter">Silicate</subject><subject subjectScheme="Parameter">Nitrite</subject><subject subjectScheme="Parameter">Nitrate and Nitrite</subject><subject subjectScheme="Parameter">Quantum yield efficiency of photosystem II</subject><subject subjectScheme="Parameter">Indicator</subject><subject subjectScheme="Parameter">Identification</subject><subject subjectScheme="Parameter">Cell density</subject><subject subjectScheme="Parameter">Salinity</subject><subject subjectScheme="Parameter">Alkalinity, total</subject><subject subjectScheme="Parameter">pH, total scale</subject><subject subjectScheme="Parameter">Temperature, water</subject><subject subjectScheme="Parameter">Fugacity of carbon dioxide (water) at sea surface temperature (wet air)</subject><subject subjectScheme="Parameter">Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)</subject><subject subjectScheme="Parameter">Bicarbonate ion</subject><subject subjectScheme="Parameter">Carbonate ion</subject><subject subjectScheme="Parameter">Carbon dioxide</subject><subject subjectScheme="Parameter">Calcite saturation state</subject><subject subjectScheme="Parameter">Aragonite saturation state</subject><subject subjectScheme="Parameter">Carbon, inorganic, dissolved</subject><subject subjectScheme="Parameter">Carbonate system computation flag</subject><subject subjectScheme="Method">Experiment</subject><subject subjectScheme="Method">Calculated using CO2SYS</subject><subject subjectScheme="Method">Calculated using seacarb after Nisumaa et al. (2010)</subject><subject subjectScheme="Project">Ocean Acidification International Coordination Centre (OA-ICC)</subject></subjects><contributors><contributor contributorType="DataCollector"><contributorName>Yang, Yan</contributorName><givenName>Yan</givenName><familyName>Yang</familyName><nameIdentifier schemeURI="http://orcid.org/" nameIdentifierScheme="ORCID">0000-0003-4900-5606</nameIdentifier></contributor></contributors><dates><date dateType="Collected">2023-05-10T00:00:00</date></dates><resourceType resourceTypeGeneral="Dataset">Dataset</resourceType><relatedIdentifiers><relatedIdentifier relatedIdentifierType="DOI" relationType="References">10.1088/1748-9326/ae1752</relatedIdentifier><relatedIdentifier relatedIdentifierType="DOI" relationType="IsDerivedFrom">10.5061/DRYAD.9CNP5HQVK</relatedIdentifier><relatedIdentifier relatedIdentifierType="DOI" relationType="References">10.5194/essd-2-167-2010</relatedIdentifier><relatedIdentifier relatedIdentifierType="DOI" relationType="References">10.5194/essd-16-3771-2024</relatedIdentifier><relatedIdentifier relatedIdentifierType="DOI" relationType="References">10.5194/essd-8-79-2016</relatedIdentifier><relatedIdentifier relatedIdentifierType="URL" relationType="References">https://cran.r-project.org/web/packages/seacarb/index.html</relatedIdentifier></relatedIdentifiers><sizes><size>8280 data points</size></sizes><formats><format>text/tab-separated-values</format></formats><rightsList><rights rightsURI="https://creativecommons.org/licenses/by/4.0/" schemeURI="https://spdx.org/licenses/" rightsIdentifierScheme="SPDX" rightsIdentifier="CC-BY-4.0">Creative Commons Attribution 4.0 International</rights></rightsList><descriptions><description descriptionType="Abstract">The dramatic impacts of global climate change have driven marine carbon dioxide removal (mCDR) innovation, including ocean alkalinity enhancement (OAE), in an attempt to keep global warming under 2 °C. We experimented to assess the impacts of brucite-inspired alkalinity addition (BIAA) as an OAE approach on the carbonate chemistry, biogeochemistry, and composition of the Santa Barbara Channel phytoplankton community sourced from a spring upwelling event. The BIAA treatment used MgCl2 * 6H2O and NaOH to yield a total alkalinity (TA) concentration of 3000 µmol/kg, in contrast with the untreated seawater controls (TA = 2300 µmol/kg).<br/>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 downloaded from Dryad (see Source) by the OA-SICC 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 2026-04-15.</description></descriptions><geoLocations><geoLocation><geoLocationPoint><pointLongitude>-119.8</pointLongitude><pointLatitude>34.3</pointLatitude></geoLocationPoint></geoLocation></geoLocations></resource>