Kuo et al. Bird Species Migration Ratio
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Supplementary materials
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NAWI-D-13-00113
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Table S1 AIC summary for full and reduced generalized linear models for the avian migration ratio
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of continental East Asia (the Asian continent east of 70°E) (3345 grid cells) and Australia (851 grid
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cells).
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Table S2 AIC summary for full and reduced generalized linear models for the avian migration ratio
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of islands from 70°E to 180°E (677 grid cells).
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Fig. S3 The annual range in ambient temperature (°C), the Enhanced Vegetation Index, and
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precipitation (mm) from East Asia to New Zealand.
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Data S4 Sources for the avian database of distribution ranges of breeding and non-breeding
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distribution ranges of 3,545 terrestrial species that breed between 70°E to 180°E.
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Kuo et al. Bird Species Migration Ratio
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Table S1 AIC summary for full and reduced generalized linear models for the avian migration ratio
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of continental East Asia (the Asian continent east of 70°E) and Australia. The criterion for model
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selection (ΔAIC) was computed with the full dataset (n = 4873 grid cells). AIC = Akaike
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Information Criterion; ΔAIC = AIC difference between full and reduced models; Akaike weight =
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relative likelihood of model; TEM, EVI, and PRE = annual range of ambient temperature (°C), the
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Enhanced Vegetation Index, and precipitation (mm), respectively; ELE = elevational range (m).
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Kuo et al. Bird Species Migration Ratio
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Continental East Asia
Explanatory variables
TEM + EVI + PRE + ELE
ΔAIC
AIC
Australia
Akaike weight
ΔAIC
AIC
Akaike weight
0
2602
0.99
0
2174
1.00
TEM + EVI + PRE
10
2612
0.01
80
2254
< 0.001
TEM + EVI + ELE
197
2799
< 0.001
12
2186
< 0.001
TEM + PRE + ELE
992
3594
< 0.001
63
2237
< 0.001
EVI + PRE + ELE
2768
5370
< 0.001
16
2190
< 0.001
TEM + EVI
205
2807
< 0.001
92
2266
< 0.001
TEM + ELE
990
3592
< 0.001
62
2236
< 0.001
TEM + PRE
990
3592
< 0.001
164
2338
< 0.001
EVI + PRE
2766
5368
< 0.001
87
2261
< 0.001
PRE + ELE
4809
7411
< 0.001
93
2267
< 0.001
EVI + ELE
5985
8587
< 0.001
186
2360
< 0.001
TEM
989
3591
< 0.001
162
2336
< 0.001
PRE
4864
7466
< 0.001
182
2356
< 0.001
EVI
6001
8603
< 0.001
221
2395
< 0.001
ELE
6817
9419
< 0.001
197
2371
< 0.001
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Kuo et al. Bird Species Migration Ratio
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Table S2 AIC summary for full and reduced generalized linear models for the avian migration ratio
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of islands from 70°E to 180°E. The criterion for model selection (ΔAIC) was computed with the full
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dataset (n = 4873 grid cells). AIC = Akaike Information Criterion; ΔAIC = AIC difference between
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full and reduced models; Akaike weight = relative likelihood of model; TEM, EVI, and PRE =
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annual range of ambient temperature (°C), the Enhanced Vegetation Index, and precipitation (mm),
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respectively; ISO = island isolation; ELE = elevational range (m).
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49
50
51
52
53
54
55
56
57
58
59
60
61
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Kuo et al. Bird Species Migration Ratio
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Islands
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
Explanatory variables
ΔAIC
AIC
Akaike weight
TEM + EVI + PRE + ELE + ISO
0
566
0.90
TEM + EVI + PRE + ISO
5
571
0.10
TEM + PRE + ELE + ISO
34
600
< 0.001
TEM + EVI + ELE + ISO
150
716
< 0.001
TEM + EVI + PRE + ELE
157
723
< 0.001
EVI + PRE + ELE + ISO
365
931
< 0.001
TEM + PRE + ISO
35
601
< 0.001
TEM + ELE + ISO
155
721
< 0.001
TEM + EVI + ISO
158
724
< 0.001
TEM + EVI + PRE
174
740
< 0.001
TEM + PRE + ELE
212
778
< 0.001
TEM + EVI + ELE
251
817
< 0.001
EVI + ISO + PRE
372
938
< 0.001
EVI + PRE + ELE
479
1045
< 0.001
EVI + ISO + ELE
735
1301
< 0.001
ISO + PRE + ELE
866
1432
< 0.001
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Kuo et al. Bird Species Migration Ratio
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Islands
82
83
84
85
86
87
88
Explanatory variables
ΔAIC
AIC
Akaike weight
TEM + ISO
161
727
< 0.001
TEM + PRE
223
789
< 0.001
TEM + EVI
271
837
< 0.001
TEM + ELE
271
837
< 0.001
EVI + PRE
498
1064
< 0.001
EVI + ISO
754
1320
< 0.001
EVI + ELE
776
1342
< 0.001
PRE + ISO
864
1430
< 0.001
PRE + ELE
1068
1634
< 0.001
ISO + ELE
1228
1794
< 0.001
TEM
286
852
< 0.001
EVI
804
1370
< 0.001
PRE
1070
1636
< 0.001
ISO
1229
1795
< 0.001
ELE
1349
1915
< 0.001
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Kuo et al. Bird Species Migration Ratio
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Fig. S3 The annual range in (a) ambient temperature (°C), (b) the Enhanced Vegetation Index, and (c)
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precipitation (mm) from East Asia to New Zealand (Behrmann projection).
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107
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Data S4 Sources for the avian database of distribution ranges of breeding and non-breeding
116
distribution ranges of 3,545 terrestrial species that breed between 70°E to 180°E.
117
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Brewer D, MacKay BK (2001) Wrens, dippers, and thrashers. Yale University Press, New Haven
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Chantler P (2000) Swifts: a guide to the swifts and treeswifts of the world, 2nd edn. Pica Press,
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Clements JF, Schulenberg TS, Iliff MJ, Sullivan BL, Wood CL, Roberson D (2011)
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