Single and multispecies reference points for Baltic fish stocks
نویسندگان
چکیده
منابع مشابه
Trends in coastal fish stocks of the Baltic Sea
1) Provincial Government of Åland Islands, Fisheries Division, P.O. Box 1060, AX-22111 Mariehamn, Åland Islands (e-mail: [email protected]) 2) Swedish Board of Fisheries, Institute of Coastal Research, P.O. Box 109, SE-740 71 Öregrund, Sweden 3) Estonian Marine Institute, Mäealuse 10 A, EE-12618 Tallinn, Estonia 4) Finnish Game and Fisheries Research Institute, P.O. Box 2, FI-00791 Helsink...
متن کاملConsideration of target reference points for WCPO stocks with an emphasis on skipjack tuna
Executive BLOCKINSummary This paper is one of a suite of three pieces of work contracted to inform the WCPFC Management Objectives Workshop, planned to be held prior to WCPFC9. This paper focuses on target reference points, and the other two papers focus on limit reference points and harvest control rules. The presentation of this work to SC8 will provide the feedback necessary to undertake fur...
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I address the question of the fluctuations in fishery landings. Using the fishery statistics time-series collected by the Food and Agriculture Organization of the United Nations since the early 1950s, I here analyze fishing activities and find two scaling features of capture fisheries production: (i) the standard deviation of growth rate of the domestically landed catches decays as a power-law ...
متن کاملStatistical Modelling of Fish Stocks
Major sources of information for the estimation of the size of the sh stocks and the rate of their exploitation are samples from which the agecomposition of catches may be determined. However, the age-composition in the catches often varies as a result of several factors. Strati cation of the sampling is desirable because it leads to better estimates of the agecomposition and the corresponding ...
متن کاملManagement of evolving fish stocks
Today, fishing is the major source of mortality in many harvested fish stocks. The new high fishing mortality regime may induce evolutionary change in the harvested population, because the currently observed life-history patterns in fish stocks presumably reflect adaptation to past mortality regimes. Changes in these life-history patterns are likely to have an influence on, for example, the sus...
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ژورنال
عنوان ژورنال: ICES Journal of Marine Science
سال: 1999
ISSN: 1054-3139
DOI: 10.1006/jmsc.1999.0492