Graph

Gadwall
(Mareca strepera)

Waterfowl Breeding Population and Habitat Survey in Western Canada and the Northwestern United-States

Additional information on: Waterfowl Breeding Population and Habitat Survey in Western Canada and the Northwestern United-States

Geographic area or population: Western Boreal Forest

Graph showing the trend of the species through out the observed years
 
Listing of the individual data points that make up the graph
YearEstimated Population95% Lower confidence interval95% Upper confidence interval
19556144.64046312.92
19561997.52037810.04
19577125032348.22
19583536.44026651.31
195939437.226277.2872597.17
19601367023092.39
196156618.525988.7787248.23
196221496047048.28
196324601.22049827.16
196438905.4611247.966563.02
196549434.2317935.3980933.06
196632303064699.27
196785144.2240969.01129319.43
19689025254458.36126045.63
196986844.7256770.68116918.76
197061159.8322984.9999334.66
197137771.6621274.9354268.4
197260806.7137925.6383687.79
197361195.9330163.292228.66
197427147.338445.5445849.12
197525195.3511766.7538623.96
197623532.5610860.2236204.89
197778168.7351801.63104535.82
197846643.6727664.4565622.9
197964476.3328298.79100653.87
1980101118.174090.18128146.03
1981127269.7485764.79168774.69
198283316.549703.74116929.25
198328173.7512386.2843961.21
198448583.1931411.7165754.67
198532445.7416219.548671.98
198684570.2154979.69114160.73
198761008.3544298.4977718.22
1988108270.9637515.08179026.84
1989109645.4764677.55154613.4
1990124733.9577606.42171861.48
1991131380.47103427.41159333.53
1992113418.6262653.99164183.24
1993118339.2383052.6153625.86
1994115734.8277280.98154188.66
1995101609.3368850.29134368.37
199683994.7251207.47116781.97
1997114073.5777214.66150932.49
1998147172.48102808.65191536.31
1999148742.5486965.83210519.25
2000111342.3779165.09143519.65
2001125859.4380567.14171151.73
2002189446.38130557.27248335.49
2003106214.4178557.76133871.07
2004160915.9395342.06226489.8
200595829.7163504.76128154.66
2006151116.3387787.3214445.37
2007114705.3580448.72148961.97
2008118568.8188702.56148435.06
20097544342194.47108691.53
20106514424304.74105983.26
20117350551947.2995062.71
20128689460253.76113534.24
20134657128342.964799.1
20147893853926.56103949.44
20154107928800.2253357.78
2016127980.7492500.76163460.72
201766094.4938486.3293702.66

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