REPORT OF THE WORKSHOP ON TRAWL SURVEY ... - FAO.org
REPORT OF THE WORKSHOP ON TRAWL SURVEY ... - FAO.org
REPORT OF THE WORKSHOP ON TRAWL SURVEY ... - FAO.org
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Haddock SSB trends from raw survey indices and XSA<br />
Index relative to 1992-2005 mean<br />
3.5<br />
3<br />
2.5<br />
2<br />
1.5<br />
1<br />
0.5<br />
0<br />
1976<br />
1978<br />
1980<br />
1982<br />
1984<br />
1986<br />
1988<br />
1990<br />
1992<br />
1994<br />
1996<br />
1998<br />
2000<br />
2002<br />
2004<br />
2006<br />
EGFS<br />
ScoGFS<br />
IBTS<br />
XSA SSB<br />
Fig. 16.<br />
North Sea haddock. Comparison of temporal trends in SSB given by the final<br />
XSA run and as given by the raw survey indices for all available ages<br />
converted to SSB (including 6+ group in IBTSQ1). Values are standardised to<br />
the 1992-2005 mean of each series. The older ScoGFS (pre 1998) and EGFS<br />
(pre 1992) are excluded due to lack of compatibility with the more recent<br />
series.<br />
69
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