Harvested fish stocks in a changing environment
نویسندگان
چکیده
منابع مشابه
Exploitation dynamics of fish stocks
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...
متن کاملEvolution of Future Black Sea Fish Stocks under Changing Environmental and Climatic Conditions
Here we present a case study toward producing quantitative scientific advice on the application of the EU Common Fisheries Policy (CFP) in the Black Sea. We provide estimates of fishing mortality rates at levels which will lead to rebuilding and maintaining stocks above biomass levels that could produce maximum sustainable yield (MSY) under the IPCC RCP4.5 future climate scenario together with ...
متن کاملLearning in a changing environment.
Multiple cue probability learning studies have typically focused on stationary environments. We present 3 experiments investigating learning in changing environments. A fine-grained analysis of the learning dynamics shows that participants were responsive to both abrupt and gradual changes in cue-outcome relations. We found no evidence that participants adapted to these types of change in quali...
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ژورنال
عنوان ژورنال: Marine Ecology Progress Series
سال: 2013
ISSN: 0171-8630,1616-1599
DOI: 10.3354/meps10314