Once More on the Stock-recruitment Relationship as one of the Factors Determining the Abundance Dynamics and Fisheries Management Strategy for Some Commercial Fish Species in NAFO Area
The stock-recruitment relationship (SRR) was researched in 13 stock units of commercial fishes in NAFO area, and for this purpose the retrospective estimates of recruitment abundance and spawning biomass were used. The results obtained were analyzed in view of the interpretation of the above said re...
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| Format: | Text |
| Language: | English |
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2004
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| Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.582.7123 http://archive.nafo.int/open/sc/2004/scr04-002.pdf |
| Summary: | The stock-recruitment relationship (SRR) was researched in 13 stock units of commercial fishes in NAFO area, and for this purpose the retrospective estimates of recruitment abundance and spawning biomass were used. The results obtained were analyzed in view of the interpretation of the above said relationship as one of the factors determining the abundance dynamics and fisheries management strategy for commercial fish populations. The effect of SRR was most evidence in 8 populations (3Ps cod, 5Ze, 5Zw+6 silver hake, 5Ze red hake, 2+3 Greenland halibut, 3LNO yellowtail flounder, 3LNO American plaice and 3-6 Atlantic mackerel). Certainly, the environment factors affected recruitment abundance formation to different extent in all cases. The results of the study allowed proposing some general recommendations on the ways of the researched stock unit’s management. The probable mechanism of SRR effect in the periods when the spawning biomass considerably differed from the optimal level was considered and within the discussion the opinion was expressed concerning further development of the precautionary approach strategy. |
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