Franšais

 

Indicators of the average population status of characteristic species (Western Boreal)

Line graph depicting the percent change in population size of various bird guilds in the Western Boreal since 1970 or 1990
Indicators of the average population status of characteristic species (Western Boreal)
Year All birds Other water birds Waterfowl Forest birds Shrub and forest-edge birds
1973 0
1974 -17.4
1975 -3.9
1976 -7.6
1977 -1.4
1978 12.9
1979 -0.3
1980 29.1
1981 10.4
1982 -5.8
1983 8.2
1984 11.1
1985 -4.4
1986 -7.5
1987 9.8
1988 11
1989 0.3
1990 0 0 -0.4 0 0
1991 2.2 5.4 4.8 -0.1 1.1
1992 3.1 -1.2 13 2.7 8.2
1993 -1.2 -12.2 0.9 2.7 2.7
1994 4 -1.9 3.4 8 4.5
1995 4.3 -1.4 7.4 5.6 1.8
1996 -1.5 -3 -13.8 6.6 -0.5
1997 0.2 7.7 11.8 4.4 -3.5
1998 -0.7 -1.8 -1.3 6.3 2.1
1999 3.1 -4 21 7 -3.1
2000 2.4 1.1 19.1 8.1 -6
2001 -5.1 -5.5 -1.6 5 -9.4
2002 -2.1 -8.4 19.4 5.1 -4.8
2003 -1.9 -12.1 14.2 6.8 -4.4
2004 0 -5.3 14.2 9.4 -5.2
2005 -0.3 7.8 1.7 6.1 -5.3
2006 -0.1 7.3 -4.8 8.4 -4.7
2007 1.1 10.4 7.6 7.1 -0.7
2008 3.8 16.8 17.5 9.1 -2.1
2009 4.2 6.4 31.8 12.7 -6.1
2010 0 5.2 37.2 9.5 -5.3

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