maximum sustainable yield


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maximum sustainable yield

the maximum crop that can be removed from a population of animals or plants without adverse effects.
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Using CEDA, following main parameters MSY (maximum sustainable yield), K (carrying capacity), q (catchability coefficient), r (intrinsic growth rate), Ryield (replacement yield) and final biomass were estimated.
The number of fishery stock assessment and maximum sustainable yield of different fish species have been studied from Pakistani waters like maximum sustainable fishery of Bombay duck and Saurida tumbil fishery, Saurida undosquamis and Nemipterus japonicus, N.
were collected and organized for further analysis using Schaefer harvest (production) model to calculate maximum sustainable yield (MSY) and the corresponding effort ([f.sub.MSY]) from catch and effort data of series years [7,16].
Using the estimate of the natural mortality of 0.38 [year.sup.-1], we obtained an estimate of the maximum sustainable yield (MSY) of 375.60 gr.[recruit.sup.-1] for a fishing mortality (F) equal to 0.52.[year.sup.-1], which is smaller than the actual levels of exploitation (Figure 2).
Finally, in Figure 9, we have shown the numerical example for the maximum sustainable yield where the equilibrium point A([x.sup.*.sub.1], [y.sup.*.sub.1], [x.sup.*.sub.2], [y.sup.*.sub.2]) is changing for different effort E and there is one value of E as [E.sup.*] where we get maximum yield h = q[E.sub.*][y.sub.*].
All the fish in the sea; maximum sustainable yield and the failure of fisheries management.
"They should be increased to the maximum sustainable yield level," he said at the time.
She acknowledges that she is 'not very happy' to read its chapter on the negative aspects of the EU's fisheries policy: 'You point out that 88% of European fish stocks, measured against maximum sustainable yield, are overexploited.
"The councils were concerned with our using a non-traditional 'catch-free' model instead of a maximum sustainable yield approach," said Barbieri.
substantially less than optimal or maximum sustainable yield levels.
A sampling of topics includes the establishment and role of marine protected areas, a solution to the protection of gray seals in the Baltic, issues of data sources in the Gulf of Mexico, models for estimating maximum sustainable yield, ecosystem modeling for South Africa fishery management, and the role of predation in the shrimp stock collapse in the Gulf of Mexico.
Almost without exception, however, councils have focused on extracting the maximum sustainable yield to the exclusion of all other considerations.
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