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  <front>
    <journal-meta>
      <journal-id journal-id-type="publisher-id">Ecological Safety of Coastal and Shelf Zones of Sea</journal-id>
      <journal-title-group>
        <journal-title>Ecological Safety of Coastal and Shelf Zones of Sea</journal-title>
      </journal-title-group>
      <issn publication-format="print">2413-5577</issn>
    </journal-meta>
    <article-meta>
      <article-id pub-id-type="publisher-id">20230410</article-id>
      
      <article-categories>
        <subj-group subj-group-type="article-type">
          <subject>Research Article</subject>
        </subj-group>
      </article-categories>

      <title-group>
        <article-title>Efficacy of Ballast Water Treatment Systems Installed Onboard Ships Entering the Seaport of Novorossiysk, the Black Sea</article-title>
      </title-group>

      <contrib-group>
        <contrib contrib-type="author">
          <name>
            <surname>Yasakova</surname>
            <given-names>O. N.</given-names>
          </name>
          <address>
            <country country="RU">Russian Federation</country>
          </address>
          <email>yasak71@mail.ru</email>
          <xref ref-type="aff" rid="aff1"/>
        </contrib>
        <contrib contrib-type="author">
          <name>
            <surname>Zuykov</surname>
            <given-names>O. T.</given-names>
          </name>
          <address>
            <country country="RU">Russian Federation</country>
          </address>
          <email>oleg@ampnovo.ru</email>
          <xref ref-type="aff" rid="aff2"/>
        </contrib>
        <contrib contrib-type="author">
          <name>
            <surname>Okolodkov</surname>
            <given-names>Y. B.</given-names>
          </name>
          <address>
            <country country="MX">Mexico</country>
          </address>
          <email>yuriokolodkov@yahoo.com</email>
          <xref ref-type="aff" rid="aff3"/>
        </contrib>
      </contrib-group>

      <aff id="aff1">
        <institution>Southern Scientific Center, Russian Academy of Sciences</institution>
        <addr-line>Rostov-on-Don</addr-line>
        <country country="RU">Russian Federation</country>
      </aff>

      <aff id="aff2">
        <institution>The Federal State Budgetary Institution "Administration of Seaports of the Black Sea"</institution>
        <addr-line>Novorossiysk</addr-line>
        <country country="RU">Russian Federation</country>
      </aff>

      <aff id="aff3">
        <institution>Laboratorio de Botánica Marina y Planctología, Instituto de Ciencias Marinas y Pesquerías, Universidad Veracruzana</institution>
        <addr-line>Veracruz</addr-line>
        <country country="MX">Mexico</country>
      </aff>

      <pub-date date-type="pub" iso-8601-date="2023-12-20" publication-format="electronic">
        <day>20</day>
        <month>12</month>
        <year>2023</year>
      </pub-date>
      <volume>2023</volume>
      <issue>4</issue>
      <fpage>134</fpage>
      <lpage>154</lpage>

      <history>
        <date date-type="received" iso-8601-date="2023-06-16">
          <day>16</day>
          <month>06</month>
          <year>2023</year>
        </date>
        <date date-type="rev-recd" iso-8601-date="2023-10-11">
          <day>11</day>
          <month>10</month>
          <year>2023</year>
        </date>
        <date date-type="accepted" iso-8601-date="2023-07-13">
          <day>13</day>
          <month>07</month>
          <year>2023</year>
        </date>
      </history>

      <permissions>
        <copyright-statement>Copyright © 2023, O. N. Yasakova, O. T. Zuykov, Y. B. Okolodkov</copyright-statement>
        <copyright-year>2023</copyright-year>
        <copyright-holder>O. N. Yasakova, O. T. Zuykov, Y. B. Okolodkov</copyright-holder>
        <ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/>
        <license>
          <ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">https://creativecommons.org/licenses/by-nc/4.0/</ali:license_ref>
        </license>
      </permissions>

      <self-uri xlink:href="https://ecological-safety.ru/en/repository/issues/2023/04/10/" xlink:title="Page of article">https://ecological-safety.ru/en/repository/issues/2023/04/10/</self-uri>

      <abstract>
        <p>The paper aims to assess the quality of ballast water purification of phyto- and microzooplankton using various ballast-water treatment systems. The analysis of treatment systems performance was based on the results of the study of phyto- and microzooplankton taxonomic composition and abundance in 19 samples of ballast water treatment after their treatment in the ships' systems. The samples were taken onboard 12 oil tankers and 7 bulk carriers originating from the ports representing the Mediterranean basin, tropical West Africa and the NW Indian Ocean. The vessels entered the seaport of Novorossiysk for cargo loading from October 2022 to March 2023. In 90% of all cases of the systems use, the ballast water purification of unicellular organisms met the Regulation D-2 Ballast Water Performance Standard of the International Convention for the Control and Management of Ships' Ballast Water and Sediments. The ballast of 10% of the vessels (from Turkish ports in the Marmara and Aegean Seas) equipped with DESMI CompactClean CC-500 (treatment by filtration + UV) and Pureballast 3.2 1500 EX (treatment by UV system) did not meet the cleaning quality standard: 1.19×10⁶ and 1.21×10⁴ cells/L, respectively, were detected after treatment. The ballast waters of vessels from the Gulf of Suez and Mauritania represented a moderate risk in terms of cell abundance (7.16×10³ and 2.03×10³ cells/L, respectively). In total, 20 microalgal species were found: diatoms (13), dinoflagellates (6), a silicoflagellate (1), several algal taxa not identified to species, as well as ciliates. Proboscia alata and Prorocentrum micans were the most frequent. No planktonic algae classified as invasive to the Black Sea were found.</p>
      </abstract>

      <kwd-group>
        <kwd>ballast water</kwd>
        <kwd>marine ballast</kwd>
        <kwd>seaport of Novorossiysk</kwd>
        <kwd>ballast water systems</kwd>
        <kwd>taxonomic composition</kwd>
        <kwd>phytoplankton</kwd>
        <kwd>Black Sea</kwd>
        <kwd>anthropogenic pollution</kwd>
        <kwd>biological invasion</kwd>
        <kwd>invasive species</kwd>
      </kwd-group>

      <funding-group>
        <funding-statement>The manuscript was prepared within the framework of the federal state task of the Southern Scientific Center, Russian Academy of Sciences, No. 122011900153-9.</funding-statement>
      </funding-group>

      <author-notes>
        <p><bold>About the authors:</bold></p>
        <p><bold>Olga N. Yasakova</bold>, Senior Research Associate, Southern Scientific Center, Russian Academy of Sciences (41 Chekhov Str., Rostov-on-Don, 344006, Russian Federation), PhD (Biol.), <bold>ORCID: 0000-0002-0728-6836</bold>, <email>yasak71@mail.ru</email></p>
        <p><bold>Oleg T. Zuykov</bold>, Deputy Head of the Federal State Budgetary Institution "Administration of Seaports of the Black Sea" (2 Khvorostyanskii Str., Novorossiysk, 353925, Russian Federation), PhD (Tech.), <bold>ORCID: 0009-0002-5130-2570</bold>, <email>oleg@ampnovo.ru</email></p>
        <p><bold>Yuri B. Okolodkov</bold>, Researcher, Laboratorio de Botánica Marina y Planctología, Instituto de Ciencias Marinas y Pesquerías, Universidad Veracruzana (Mar Mediterráneo 314, Fracc. Costa Verde, Boca del Río, Veracruz, 94294, Mexico), DSc (Biol.), <bold>ORCID: 0000-0003-3421-3429</bold>, <email>yuriokolodkov@yahoo.com</email></p>
        <p><bold>Contribution of the authors:</bold></p>
        <p><bold>Olga N. Yasakova</bold> – conducting research, processing samples of marine ballast, description of the results of the study, qualitative and quantitative analysis of the results and their interpretation</p>
        <p><bold>Oleg T. Zuykov</bold> – development of the concept, formulation and statement of the research problem, conducting a critical analysis of materials related to the technical side of the study of ballast water</p>
        <p><bold>Yuri B. Okolodkov</bold> – analysis of the results and their interpretation, preparation of graphic materials, editing of the manuscript</p>
        <p><italic>All the authors have read and approved the final version of the manuscript.</italic></p>
      </author-notes>
    </article-meta>
  </front>

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  <back>
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