<?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="DOI">10.1594/PANGAEA.993444</identifier><creators><creator><creatorName>Jones, Kristin</creatorName><givenName>Kristin</givenName><familyName>Jones</familyName><affiliation affiliationIdentifierScheme="ROR" affiliationIdentifier="https://ror.org/05h992307">Pacific Northwest National Laboratory, Washington</affiliation></creator><creator><creatorName>Hemery, Lenaïg G</creatorName><givenName>Lenaïg G</givenName><familyName>Hemery</familyName><affiliation affiliationIdentifierScheme="ROR" affiliationIdentifier="https://ror.org/05h992307">Pacific Northwest National Laboratory, Washington</affiliation></creator><creator><creatorName>Ward, Nicholas D</creatorName><givenName>Nicholas D</givenName><familyName>Ward</familyName><nameIdentifier schemeURI="http://orcid.org/" nameIdentifierScheme="ORCID">0000-0001-6174-5581</nameIdentifier><affiliation affiliationIdentifierScheme="ROR" affiliationIdentifier="https://ror.org/05h992307">Pacific Northwest National Laboratory, Washington</affiliation><affiliation affiliationIdentifierScheme="ROR" affiliationIdentifier="https://ror.org/00cvxb145">University of Washington</affiliation></creator><creator><creatorName>Regier, Peter J</creatorName><givenName>Peter J</givenName><familyName>Regier</familyName><affiliation affiliationIdentifierScheme="ROR" affiliationIdentifier="https://ror.org/05h992307">Pacific Northwest National Laboratory, Washington</affiliation></creator><creator><creatorName>Ringham, Mallory C</creatorName><givenName>Mallory C</givenName><familyName>Ringham</familyName></creator><creator><creatorName>Eisaman, Matthew D</creatorName><givenName>Matthew D</givenName><familyName>Eisaman</familyName><affiliation affiliationIdentifierScheme="ROR" affiliationIdentifier="https://ror.org/03v76x132">Yale University</affiliation></creator></creators><titles><title>Seawater carbonate chemistry and Biological response of eelgrass epifauna, Taylor's Sea hare (Phyllaplysia taylori) and eelgrass isopod (Idotea resecata), to elevated ocean alkalinity</title></titles><publisher>PANGAEA</publisher><publicationYear>2026</publicationYear><subjects><subject>Animalia</subject><subject>Arthropoda</subject><subject>Benthic animals</subject><subject>Benthos</subject><subject>Bottles or small containers/Aquaria (&lt;20 L)</subject><subject>Idotea resecata</subject><subject>Laboratory experiment</subject><subject>Laboratory strains</subject><subject>Mollusca</subject><subject>Mortality/Survival</subject><subject>Not applicable</subject><subject>Ocean alkalinity enhancement</subject><subject>Phyllaplysia taylori</subject><subject>Single species</subject><subject>Sodium hydroxide</subject><subject subjectScheme="Parameter">Type of study</subject><subject subjectScheme="Parameter">Species, unique identification</subject><subject subjectScheme="Parameter">Species, unique identification (URI)</subject><subject subjectScheme="Parameter">Species, unique identification (Semantic URI)</subject><subject subjectScheme="Parameter">Experiment duration</subject><subject subjectScheme="Parameter">Treatment</subject><subject subjectScheme="Parameter">Identification</subject><subject subjectScheme="Parameter">Time in days</subject><subject subjectScheme="Parameter">Individuals</subject><subject subjectScheme="Parameter">Temperature, water</subject><subject subjectScheme="Parameter">Temperature, water, standard deviation</subject><subject subjectScheme="Parameter">Salinity</subject><subject subjectScheme="Parameter">Salinity, standard deviation</subject><subject subjectScheme="Parameter">Oxygen, dissolved</subject><subject subjectScheme="Parameter">Oxygen, dissolved, standard deviation</subject><subject subjectScheme="Parameter">pH, NBS scale</subject><subject subjectScheme="Parameter">pH, standard deviation</subject><subject subjectScheme="Parameter">Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)</subject><subject subjectScheme="Parameter">Partial pressure of carbon dioxide, standard deviation</subject><subject subjectScheme="Parameter">Alkalinity, total</subject><subject subjectScheme="Parameter">Alkalinity, total, standard deviation</subject><subject subjectScheme="Parameter">Carbon, inorganic, dissolved</subject><subject subjectScheme="Parameter">Carbon, inorganic, dissolved, standard deviation</subject><subject subjectScheme="Parameter">Aragonite saturation state</subject><subject subjectScheme="Parameter">Aragonite saturation state, standard deviation</subject><subject subjectScheme="Parameter">Carbonate system computation flag</subject><subject subjectScheme="Parameter">pH, total scale</subject><subject subjectScheme="Parameter">Carbon dioxide</subject><subject subjectScheme="Parameter">Fugacity 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">Calcite saturation state</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><resourceType resourceTypeGeneral="Dataset">Dataset</resourceType><relatedIdentifiers><relatedIdentifier relatedIdentifierType="DOI" relationType="References">10.5194/bg-22-1615-2025</relatedIdentifier><relatedIdentifier relatedIdentifierType="DOI" relationType="IsDerivedFrom">10.25921/53S1-H309</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>7296 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">This study aims to address this knowledge gap by testing the effects of increased pH and alkalinity, delivered in the form of aqueous NaOH, on two eelgrass epifauna in the US Pacific Northwest, Taylor's sea hare (Phyllaplysia taylori) and eelgrass isopod (Idotea resecata), chosen for their ecological importance as salmon prey and for their role in eelgrass ecosystems. Four-day experiments were conducted in closed bottles to allow measurements of the evolution of carbonate species throughout the experiment, with water refreshed twice daily to maintain elevated pH, across pHNBS (NBS standard scale) treatments ranging from 7.8 to 9.3.<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 NOAA National Centers for Environmental Information (see Source) by 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 2026-04-03.</description><description descriptionType="TechnicalInfo">Species names should be interpreted as scientific names following standard nomenclature, even though they appear in plain text.</description></descriptions></resource>