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    <alternateIdentifier>cf273abb-b315-4194-9d36-c48cc669e168</alternateIdentifier>
    <title>Ocean phytoplankton productivity from 1970 to 1994</title>
    <creator>
      <individualName>
        <givenName>Nicola</givenName>
        <surName>Fiore</surName>
      </individualName>
      <organizationName>EquiUP srl</organizationName>
      <positionName>CEO</positionName>
    </creator>
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      <individualName>
        <givenName>Nicola</givenName>
        <surName>Fiore</surName>
      </individualName>
      <organizationName>EquiUP srl</organizationName>
      <positionName>CEO</positionName>
    </metadataProvider>
    <associatedParty>
      <individualName>
        <givenName>Martina</givenName>
        <surName>Pulieri</surName>
      </individualName>
      <organizationName>University of Salento</organizationName>
      <positionName>Research assistant</positionName>
      <electronicMailAddress>martina.pulieri@unisalento.it</electronicMailAddress>
      <userId directory="https://orcid.org/">0009-0001-9691-1989</userId>
      <role>Information Manager</role>
    </associatedParty>
    <associatedParty>
      <individualName>
        <givenName>Ilaria</givenName>
        <surName>Rosati</surName>
      </individualName>
      <organizationName>National Research Council (CNR), Institute of Research on Terrestrial Ecosystems (IRET)</organizationName>
      <positionName>Technologist</positionName>
      <electronicMailAddress>ilaria.rosati@cnr.it</electronicMailAddress>
      <userId directory="https://orcid.org/">0000-0003-3422-7230</userId>
      <role>Custodian Steward</role>
    </associatedParty>
    <pubDate>2026-01-28</pubDate>
    <language>English</language>
    <abstract>This dataset integrates data on phytoplankton chlorophyll and primary production estimeted by using the C-14 methods, collected during several research cruise between 1970 and 1994. The reported data were collected during the tropical ocean cruise and the Atlantic Ocean cruise along the North American coast. The dataset has been created using online data available from Ocean Productivity website.</abstract>
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      <keyword>Daily carbon fixation</keyword>
      <keywordThesaurus>Biomass VRE Thesaurus</keywordThesaurus>
    </keywordSet>
    <keywordSet>
      <keyword>water temperature</keyword>
      <keywordThesaurus>Environmental Thesaurus</keywordThesaurus>
    </keywordSet>
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      <keyword>Aquatic</keyword>
      <keyword>Biomass</keyword>
      <keyword>Chlorophyll a content</keyword>
      <keywordThesaurus>Traits Thesaurus</keywordThesaurus>
    </keywordSet>
    <intellectualRights>Free for use, including sharing and adaptation, by all individuals provided that the owners are acknowledged in any use or publication.</intellectualRights>
    <licensed>
      <licenseName>cc-by</licenseName>
      <url>https://creativecommons.org/licenses/by/4.0/</url>
    </licensed>
    <coverage>
      <geographicCoverage>
        <geographicDescription>Atlantic ocean</geographicDescription>
        <boundingCoordinates>
          <westBoundingCoordinate>-179.6</westBoundingCoordinate>
          <eastBoundingCoordinate>175</eastBoundingCoordinate>
          <northBoundingCoordinate>44.1</northBoundingCoordinate>
          <southBoundingCoordinate>-25</southBoundingCoordinate>
        </boundingCoordinates>
      </geographicCoverage>
      <temporalCoverage>
        <rangeOfDates>
          <beginDate>
            <calendarDate>1970-05-06</calendarDate>
          </beginDate>
          <endDate>
            <calendarDate>1994-03-30</calendarDate>
          </endDate>
        </rangeOfDates>
      </temporalCoverage>
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      <valueURI label="Aquatic">https://kos.lifewatch.eu/thesauri/traits/c_99c04d3b</valueURI>
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      <valueURI label="Biomass">https://kos.lifewatch.eu/thesauri/traits/c_331cd569</valueURI>
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    <annotation>
      <propertyURI label="keyword">http://www.w3.org/ns/dcat#keyword</propertyURI>
      <valueURI label="water temperature">http://vocabs.lter-europe.net/EnvThes/22313</valueURI>
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    <annotation>
      <propertyURI label="keyword">http://www.w3.org/ns/dcat#keyword</propertyURI>
      <valueURI label="Daily carbon fixation">https://kos.lifewatch.eu/thesauri/vrebiomass/c_9d6a7579</valueURI>
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      <valueURI label="Chlorophyll a content">https://kos.lifewatch.eu/thesauri/traits/c_5b2cb337</valueURI>
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    <purpose>This dataset has been used as a case study within the Biomass Virtual Research Environment, in particular in workflow 1 and workflow 4.</purpose>
    <contact>
      <individualName>
        <givenName>Nicola</givenName>
        <surName>Fiore</surName>
      </individualName>
      <organizationName>EquiUP srl</organizationName>
      <positionName>CEO</positionName>
    </contact>
    <methods>
      <methodStep>
        <description>The dataset is a subset of data from the Ocean Productivity website https://orca.science.oregonstate.edu/index.php. The data were selected searching for specific variables and only data were the variables of interests were present (e.g. temperature, irradiance, day light and depth) were selected. Water samples have been collected during different research cruise for estimating phytoplankton physiology and photosynthesis, by measuring daily carbon fixation rates and chlorophyll a content. The "Distance from coast" was estimated using the geographic coordinates of the sampling point in relation to the coastline.</description>
      </methodStep>
    </methods>
    <project>
      <title>ITINERIS - Italian Integrated Environmental Research Infrastructures System</title>
      <personnel>
        <individualName>
          <givenName>Alberto</givenName>
          <surName>Basset</surName>
        </individualName>
        <organizationName>University of Salento</organizationName>
        <positionName>Full professor</positionName>
        <electronicMailAddress>alberto.basset@unisalento.it</electronicMailAddress>
        <userId directory="https://orcid.org/">0000-0002-3603-9316</userId>
        <role>Principal Investigator</role>
      </personnel>
      <abstract>Most critical issues currently faced by our society involve key environmental challenges. Pollution, land use and climate change, and their impacts on biodiversity and ecosystem integrity need to be urgently addressed, providing quantitative knowledge to be transformed into actionable strategies. Given the complexity of such challenges, a multi-disciplinary approach to the Earth System is deemed crucial. This approach involves combining field and laboratory measurements, analyses, experiments, data analysis, and modeling tools across the various interlinked environmental domains. Italy is actively involved in all major pan-European Environmental Research Infrastructures (RIs) and also hosts other nationally relevant RIs, all essential for providing the systematic and coherent information needed for high-level research. Given the large number and heterogeneity of these infrastructures, coordinated actions are essential to integrate and interlink them, as well as to harmonize their activities. To achieve an integrated approach to the Earth system and its changes, the 22 participating RIs agreed to jointly prepare and build the thematic network called ITINERIS. The primary objective of ITINERIS is to establish the italian integrated system of the Research Infrastructures in the environmental scientific domain, facilitating observation and study of processes in the atmosphere, marine domain, terrestrial biosphere, and geosphere. Such a broad-scale and long-term vision of environmental research, sustained by the main Italian scientists currently involved in European RIs, is truly innovative and it will support Italy in taking a leading role in European environmental research activities, designing the framework for the next decades.</abstract>
      <funding>Next Generation EU PNRR- Mission 4 “Education and Research” - Component 2: “From research to business” - Investment 3.1: “Fund for the realization of an integrated system of research and innovation infrastructures”</funding>
    </project>
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          <attributeLabel>Cruise</attributeLabel>
          <attributeDefinition>Identifier assigned to a specific sampling event by a cruise.</attributeDefinition>
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          <attributeDefinition>The integer month in which the dwc:Event occurred.</attributeDefinition>
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          <attributeDefinition>The four-digit year in which the dwc:Event occurred, according to the Common Era Calendar.</attributeDefinition>
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              <formatString>YYYY</formatString>
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          <attributeName>decimalLatitude</attributeName>
          <attributeLabel>Decimal Latitude</attributeLabel>
          <attributeDefinition>The geographic latitude (in decimal degrees, using the spatial reference system given in dwc:geodeticDatum) of the geographic center of a dcterms:Location. Positive values are north of the Equator, negative values are south of it. Legal values lie between -90 and 90, inclusive.</attributeDefinition>
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          <attributeName>decimalLongitude</attributeName>
          <attributeLabel>Decimal Longitude</attributeLabel>
          <attributeDefinition>The geographic longitude (in decimal degrees, using the spatial reference system given in dwc:geodeticDatum) of the geographic center of a dcterms:Location. Positive values are east of the Greenwich Meridian, negative values are west of it. Legal values lie between -180 and 180, inclusive.</attributeDefinition>
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                <standardUnit>degree</standardUnit>
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        <attribute>
          <attributeName>waterTemperature</attributeName>
          <attributeLabel>Water Temperature</attributeLabel>
          <attributeDefinition>Water temperature measured in situ.</attributeDefinition>
          <measurementScale>
            <ratio>
              <unit>
                <standardUnit>celsius</standardUnit>
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                <numberType>real</numberType>
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        </attribute>
        <attribute>
          <attributeName>dayLenght</attributeName>
          <attributeLabel>Day Length</attributeLabel>
          <attributeDefinition>Number of hours in a photoperiod.</attributeDefinition>
          <measurementScale>
            <ratio>
              <unit>
                <standardUnit>hour</standardUnit>
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                <numberType>real</numberType>
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        </attribute>
        <attribute>
          <attributeName>irradiance</attributeName>
          <attributeLabel>Light intensity</attributeLabel>
          <attributeDefinition>Power of electromagnetic radiation per unit area (light received).</attributeDefinition>
          <measurementScale>
            <ratio>
              <unit>
                <customUnit>Einstein Per Square Metre</customUnit>
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        </attribute>
        <attribute>
          <attributeName>chla</attributeName>
          <attributeLabel>Chlorophyll a content</attributeLabel>
          <attributeDefinition>The amount of chlorophyll a in an organism. It is usually expressed as a percentage of the total pigments in the organism or as a concentration per unit mass of the organism or per unit volume of water.</attributeDefinition>
          <measurementScale>
            <ratio>
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                <standardUnit>milligramPerMeterCubed</standardUnit>
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        </attribute>
        <attribute>
          <attributeName>primaryProduction</attributeName>
          <attributeLabel>Net Primary Production</attributeLabel>
          <attributeDefinition>The rate at which photosynthetic organisms produce net useful chemical energy after accounting for respiration.</attributeDefinition>
          <measurementScale>
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              <unit>
                <standardUnit>milligramPerMeterCubedPerDay</standardUnit>
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          <attributeDefinition>The horizontal distance measured from the shoreline toward the open sea.</attributeDefinition>
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