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    Fishing behaviour of Chinese krill fishing fleet

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    Numéro du document:
    WG-EMM-17/45
    Auteur(s):
    R. Wang and G.P. Zhu
    Soumis par:
    Guoping Zhu (Chine)
    Approuvé par:
    Xianyong Zhao (Chine)
    Point(s) de l'ordre du jour
    Résumé

    Understanding the fishing behavior of a kind of fishery is a very important part of developing and managing this fishery comprehensively. In this paper, based on the random walk model, the relationship between distance and frequency distribution of the adjacent krill fishing positions were analyzed in the subareas of the Commission for Conservation of Antarctic Marine Living Resources (CCAMLR subareas 48.1, 48.2 and 48.3). The frequency of distances between consecutive hauls shows a heavy-tailed distribution, which can be used to calculate the value of the parameter μ according to the power function f (l) ~ l of random walk to determine which random walk patterns the Chinese krill fishing fleet belongs to. The results show that the behavior of the Chinese krill fishing fleet is consistent with the Lévy random walk model.

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