1 Ocak 2016 Dergi makalesi Açık Erişim

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

Citation Style Language JSON

{
  "DOI": "10.1111/faf.12102", 
  "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.", 
  "author": [
    {
      "family": "Froese", 
      "given": " Rainer"
    }, 
    {
      "family": "Coro", 
      "given": " Gianpaolo"
    }, 
    {
      "family": "Kleisner", 
      "given": " Kristin"
    }, 
    {
      "family": "Demirel", 
      "given": " Nazli"
    }
  ], 
  "container_title": "FISH AND FISHERIES", 
  "id": "57607", 
  "issue": "1", 
  "issued": {
    "date-parts": [
      [
        2016, 
        1, 
        1
      ]
    ]
  }, 
  "page": "193-209", 
  "title": "Revisiting safe biological limits in fisheries", 
  "type": "article-journal", 
  "volume": "17"
}