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Table 6. Rates of change in Northern Wolffish abundance indices based on research trawl survey data.
Survey NAFO Divisions Period Total/Mature Rate of change (%) Natural log regression parameters
N years P-values slope
Newfoundland & Labrador Fall Survey 2J3KL 1981-1994 Total −99 13 0.910 <0.001 −0.33
1995-2009 Total 324 14 0.471 0.005 0.07
Newfoundland & Labrador Spring Survey 3LNOPs 1971-1982 Total 4708 10 0.6657 0.004 0.34
1984-1995 Total −71 10 0.1147 0.308 −0.04
1996-2010 Total 35 14 0.0318 0.542 0.02
Mature 77 8 0.0733 0.516 0.07

* Blanks indicate that no survey was conducted.

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Date Modified:
2014-08-08