1 Ocak 2016 Dergi makalesi Açık Erişim

Froese, Rainer; Coro, Gianpaolo; Kleisner, Kristin; Demirel, Nazli

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  <identifier identifierType="URL">https://aperta.ulakbim.gov.tr/record/57607</identifier>
  <creators>
    <creator>
      <creatorName>Froese, Rainer</creatorName>
      <givenName>Rainer</givenName>
      <familyName>Froese</familyName>
      <affiliation>GEOMAR Helmholtz Ctr Ocean Res, Dusternbrooker Weg 20, D-24105 Kiel, Germany</affiliation>
    </creator>
    <creator>
      <creatorName>Coro, Gianpaolo</creatorName>
      <givenName>Gianpaolo</givenName>
      <familyName>Coro</familyName>
      <affiliation>CNR, Ist Sci &amp; Tecnol Informaz A Faedo, Via Moruzzi 1, I-56124 Pisa, Italy</affiliation>
    </creator>
    <creator>
      <creatorName>Kleisner, Kristin</creatorName>
      <givenName>Kristin</givenName>
      <familyName>Kleisner</familyName>
      <affiliation>Univ British Columbia, Fisheries Ctr, Sea Us Project, 2202 Main Mall, Vancouver, BC V6J 1Z4, Canada</affiliation>
    </creator>
    <creator>
      <creatorName>Demirel, Nazli</creatorName>
      <givenName>Nazli</givenName>
      <familyName>Demirel</familyName>
      <affiliation>Istanbul Univ, Inst Marine Sci &amp; Management, Muskule Sok 17, TR-34134 Istanbul, Turkey</affiliation>
    </creator>
  </creators>
  <titles>
    <title>Revisiting Safe Biological Limits In Fisheries</title>
  </titles>
  <publisher>Aperta</publisher>
  <publicationYear>2016</publicationYear>
  <dates>
    <date dateType="Issued">2016-01-01</date>
  </dates>
  <resourceType resourceTypeGeneral="Text">Journal article</resourceType>
  <alternateIdentifiers>
    <alternateIdentifier alternateIdentifierType="url">https://aperta.ulakbim.gov.tr/record/57607</alternateIdentifier>
  </alternateIdentifiers>
  <relatedIdentifiers>
    <relatedIdentifier relatedIdentifierType="DOI" relationType="IsIdenticalTo">10.1111/faf.12102</relatedIdentifier>
  </relatedIdentifiers>
  <rightsList>
    <rights rightsURI="http://www.opendefinition.org/licenses/cc-by">Creative Commons Attribution</rights>
    <rights rightsURI="info:eu-repo/semantics/openAccess">Open Access</rights>
  </rightsList>
  <descriptions>
    <description descriptionType="Abstract">The appropriateness of three official fisheries management reference points used in the north-east Atlantic was investigated: (i) the smallest stock size that is still within safe biological limits (SSBpa), (ii) the maximum sustainable rate of exploitation (F-msy) and (iii) the age at first capture. As for (i), in 45% of the examined stocks, the official value for SSBpa was below the consensus estimates determined from three different methods. With respect to (ii), the official estimates of F-msy exceeded natural mortality M in 76% of the stocks, although M is widely regarded as natural upper limit for F-msy. And regarding (iii), the age at first capture was below the age at maturity in 74% of the stocks. No official estimates of the stock size (SSBmsy) that can produce the maximum sustainable yield (MSY) are available for the north-east Atlantic. An analysis of stocks from other areas confirmed that twice SSBpa provides a reasonable preliminary estimate. Comparing stock sizes in 2013 against this proxy showed that 88% were below the level that can produce MSY. Also, 52% of the stocks were outside of safe biological limits, and 12% were severely depleted. Fishing mortality in 2013 exceeded natural mortality in 73% of the stocks, including those that were severely depleted. These results point to the urgent need to re-assess fisheries reference points in the north-east Atlantic and to implement the regulations of the new European Common Fisheries Policy regarding sustainable fishing pressure, healthy stock sizes and adult age/size at first capture.</description>
  </descriptions>
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