(5.3.4 & 5.3.5)
During the meeting of the Assessment Working Group (ICES, 1998b) on the Iberic stock (Div. VIIIc and IXa) of hake, Merluccius merluccius, the recruitment (million individuals at age 0) and the spawning biomass (thousand tons) was estimated for the period 1982-1996. The values obtained are presented in the following table:
Year |
N (age 0) |
Spawning biomass |
1982 |
125 |
59.8 |
1983 |
107 |
61.4 |
1984 |
136 |
58.8 |
1985 |
97 |
44.1 |
1986 |
104 |
26.4 |
1987 |
97 |
24.2 |
1988 |
84 |
22.8 |
1989 |
56 |
18.9 |
1990 |
59 |
19.4 |
1991 |
69 |
20.5 |
1992 |
86 |
21.5 |
1993 |
70 |
21.0 |
1994 |
63 |
16.5 |
1995 |
32 |
15.2 |
1996 |
83 |
18.0 |
1. Using the spawning biomasses and the resulting recruitments, calculate the Biological Reference Limit Points, MBAL and Bloss.