Graph

Black-bellied Plover
(Pluvialis squatarola)

Analyses of Shorebird Migration Monitoring Data

Additional information on: Analyses of Shorebird Migration Monitoring Data

Geographic area or population: North America

Graph showing the trend of the species through out the observed years
 
Listing of the threshold values that appear on the graph
Population below lowest acceptable levelGoal
1.085 1.446
Listing of the individual data points that make up the graph
YearAnnual IndexLower LimitUpper Limit
19741.520.772.78
19751.660.882.88
19761.520.822.67
19771.60.882.73
19781.070.591.81
19791.070.61.78
19801.220.692.03
19811.280.752.09
19821.070.641.71
19831.671.012.65
19842.241.363.54
19851.50.922.33
19860.830.521.29
19871.290.81.99
19881.070.681.63
19890.880.561.33
19901.190.771.8
19910.910.591.38
19920.720.451.09
19931.050.691.55
19940.920.61.37
19950.830.551.24
19960.790.511.19
19971.10.721.66
19981.560.992.3
19990.730.471.08
20000.830.541.24
20011.150.731.72
20020.820.521.24
20030.930.591.43
20040.910.571.41
20051.090.681.73
20060.730.451.18
20070.890.531.44
20081.070.651.77
20090.940.561.58
20101.170.692
20111.250.732.15
20120.730.421.25
20130.630.361.11
20140.640.371.17
20150.650.371.21
20160.540.31.03

Notes on numeric data: Ex represents 10 to the power of x; For example 1.2345E-2 is equivalent to 0.012345