Percentage change in the relative abundance
of 214 priority species. Index, 1970 = 100
120
100
80
60
Confidence range
95% chance the real value
is within this range
40
20
0
1970
80
90
00
10
16
Percentage change in the relative abundance of 214 priority species. Index, 1970 = 100
120
100
80
60
Confidence range
95% chance the real value
is within this range
40
20
0
1970
1980
1990
2000
2010
2016