Esimerkkejä Spawning biomass käytöstä Englanti ja niiden käännökset Suomi
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Minimum spawning biomass level in tonnes.
Remedial measures should be envisaged in case the stock size falls below minimum spawning biomass.
SSBy is the actual Spawning Biomass estimated in May every year.
At the same time it instructed the Commission to draw up plans to rebuild those stocks andto include measures that would comply with quotas and respect spawning biomass levels.
Bpa is the precautionary spawning biomass level for this stock.
As mentioned above for each stock the two graphs showthe longest possible time series of landings and fishing mortality, spawning biomass and recruitment.
Minimum biomass level" means a spawning biomass level of 100 000 tonnes;
When the spawning biomass of any of the stocks concerned for a certain year is below the minimum spawning biomass levels set out in paragraph 1, appropriate remedial measures shall be adopted to ensure rapid return of the stock concerned to precautionary levels.
Precautionary biomass level" means a spawning biomass level of 140 000 tonnes;
When scientific advice indicates that for a given year the spawning biomass of any of the stocks in Group 1 is below the MSY Btrigger or that the abundance of any of the functional units in Group 2 is below the Abundancebuffer set out in Annex II, column A, all appropriate remedial measures shall be adopted to ensure rapid return of the stock or functional unit concerned to levels above those capable of producing maximum sustainable yield.
The proposal sought to lay down mediumterm strategies for progressively reducing fishing mortality,while attempting to increase spawning biomass so that it attains- or to prevent it from falling below- a proposed lower limit.
In the absence of advice on spawning biomass or abundance level, the trigger should be when scientific advice states that a stock is under threat.
Outlined the follow-up to the communication by including three parameters in an analytical simulation, namely real and ideal fishing mortality per fishery,the level of spawning biomass in relation to the precautionary level and the levels of annual TACs, and.
The conservation reference points expressed in minimum spawning biomass level that is consistent with full reproductive capacity shall be for the stocks concerned as follows.
Unwanted by-catches and their subsequent discarding has innumerable negative consequences: it is a waste of resources,the catching of juveniles of target species results in lower catch opportunities for those species and a reduction in the spawning biomass and, together with catches and discards of species which are not targeted by fisheries(fish, crustacean, sea mammal or sea bird species, etc.) amounts to a biological attack on the marine ecosystem.
In the absence of advice on spawning biomass level, the trigger should be, when scientific advice states that a stock is under threat.
Conservation reference points expressed in spawning biomass levels and specific conservation measures;
The proposed plan sets a minimum spawning biomass level based on scientific advice from STECF and ICES, below which the fishery should remain closed.
In this context,the fact that recruitment has been good despite a very low spawning biomass is in itself a compensatory effect resulting from an extensive period of overfishing.
The STECF also advises that the minimum spawning biomass level at which the stock could start to be harvested should be set at 24 000 tones and the precautionary biomass levels at 33 000 tones.
Where evaluation would show that the minimum spawning biomass level or the TAC levels established in the plan would no longer be appropriate, adaptation of the plan should be ensured.
That upper limit also conforms to the ICES"advice rule"7, which indicates that when the spawning biomass or abundance is in a poor state, F be reduced to a value that does not exceed an upper limit equal to the FMSY point value multiplied by the spawning biomass or abundance in the TAC year divided by MSY Btrigger or Abundancelimit.
According to ICCAT, the current spawning stock biomass is less than 15% of what it was before fishing began.
Now the scientists agree that there are an estimated 400 000 tonnes of haddock spawning stock biomass in the North Sea.