Table S3.
A.
Season
Diet
Vampire
ANOSIM
Adonis
ANOSIM
Adonis
ANOSIM
Adonis
R
p
R
2
p
R
p
R
2
p
R
p
R
2
p
1. Full Dataset
N = 113
Weighted Bray
-
Curtis
0.27
0.001
0.041
0.001
0.15
0.001
0.010
0.056
0.23
0.001
0.051
0.001
Unweighted Bray
-
Curtis
0.20
0.001
0.038
0.001
0.19
0.001
0.009
0.12
0.31
0.001
0.057
0.001
Weighted UniFrac
0.30
0.001
0.073
0.001
0.12
0.001
0.008
0.18
0.16
0.001
0.060
0.001
Unweighted UniFrac
0.21
0.001
0.029
0.001
0.26
0.001
0.012
0.013
0.38
0.001
0.050
0.001
2. November
samples
N = 60
Weighted Bray
-
Curtis
0.33
0.001
0.017
0.19
0.35
0.001
0.11
0.001
Unweighted Bray
-
Curtis
0.32
0.001
0.017
0.21
0.35
0.001
0.12
0.001
Weighted UniFrac
0.30
0.001
0.016
0.26
0.29
0.001
0.14
0.001
Unweighted UniFrac
0.41
0.001
0.020
0.064
0.43
0.001
0.10
0.001
3
a
. No
G.
septentrionalis,
balanced by season
N = 82
Weighted Bray
-
Curtis
0.17
0.001
0.056
0.001
-
0.07
0.95
0.018
0.076
Unweighted Bray
-
Curtis
0.14
0.001
0.049
0.001
-
0.05
0.88
0.017
0.15
Weighted
UniFrac
0.17
0.001
0.078
0.001
-
0.05
0.87
0.015
0.28
Unweighted UniFrac
0.13
0.001
0.036
0.001
-
0.03
0.75
0.02
0.01
3b
.
No
G.
septentrionalis
,
balanced
season & diet
N = 40
Weighted Bray
-
Curtis
0.17
0.001
0.068
0.002
0.019
0.32
0.032
0.24
Unweighted Bray
-
Curtis
0.15
0.002
0.063
0.002
0.022
0.27
0.031
0.27
Weighted UniFrac
0.15
0.009
0.087
0.004
0.008
0.34
0.028
0.31
Unweighted UniFrac
0.14
0.002
0.052
0.001
0.062
0.10
0.034
0.053
4
.
Herbivorous finches,
balanced by
season
N = 50
Weighted Bray
-
Curtis
0.21
0.001
0.074
0.001
Unweighted Bray
-
Curtis
0.17
0.001
0.068
0.001
Weighted UniFrac
0.24
0.001
0.11
0.001
Unweighted UniFrac
0.16
0.001
0.050
0.001
5
.
Insectivorous finches,
balanced by season
N = 20
Weighted Bray
-
Curtis
0.076
0.17
0.077
0.12
Unweighted Bray
-
Curtis
0.072
0.18
0.071
0.16
Weighted UniFrac
0.042
0.23
0.074
0.18
Unweighted UniFrac
0.11
0.09
0.075
0.082
6
a
.
G. fuliginosa
,
balanced by season
N = 22
Weighted Bray
-
Curtis
0.38
0.001
0.12
0.002
Unweighted Bray
-
Curtis
0.38
0.001
0.12
0.002
Weighted UniFrac
0.45
0.001
0.17
0.005
Unweighted UniFrac
0.31
0.002
0.086
0.006
7
a
.
G. fuliginosa
&
G.
fortis
,
balanced by season
N = 30
Weighted Bray
-
Curtis
0.28
0.001
0.11
0.001
Unweighted Bray
-
Curtis
0.26
0.001
0.11
0.001
Weighted UniFrac
0.35
0.001
0.18
0.001
Unweighted UniFrac
0.23
0.001
0.078
0.001
8
.
G.
fuliginosa
on San
Cristobal Island,
balanced by season
N = 14
Weighted Bray
-
Curtis
0.46
0.003
0.20
0.004
Unweighted Bray
-
Curtis
0.43
0.003
0.19
0.003
Weighted UniFrac
0.47
0.007
0.27
0.006
Unweighted UniFrac
0.40
0.005
0.15
0.005
9
.
No
G. septentrionalis
,
dry season, balanced by
diet
N = 32
Weighted Bray
-
Curtis
0.018
0.30
0.036
0.32
Unweighted Bray
-
Curtis
0.011
0.38
0.036
0.36
Weighted UniFrac
0.015
0.33
0.044
0.21
Unweighted UniFrac
0.028
0.24
0.039
0.22
10
.
No
G.
septentrionalis
, wet
season
, balanced
diet
N = 20
Weighted Bray
-
Curtis
0.012
0.43
0.062
0.33
Unweighted Bray
-
Curtis
0.044
0.28
0.063
0.28
Weighted UniFrac
0.013
0.40
0.054
0.42
Unweighted UniFrac
0.10
0.12
0.075
0.075
11
.
Herbivores and
insectivores, Santa
Cruz
,
wet
season,
unbalanced
*
*
N = 10
Weighted Bray
-
Curtis
0.75
0.005
-
-
Unweighted Bray
-
Curtis
0.42
0.017
-
-
Weighted UniFrac
0.24
0.079
-
-
Unweighted UniFrac
0.35
0.019
-
-
12
a
.
Ground finches
during the dry season,
balanced by diet
*
*
N = 18
Weighted Bray
-
Curtis
0.11
0.16
0.087
0.067
Unweighted Bray
-
Curtis
0.14
0.057
0.095
0.031
Weighted UniFrac
0.15
0.093
0.14
0.020
Unweighted UniFrac
0.18
0.024
0.093
0.007
13a.
Dry season finches,
balanced by vampire
N = 62
Weighted Bray
-
Curtis
0.32
0.001
0.016
0.35
0.34
0.001
0.10
0.001
Unweighted Bray
-
Curtis
0.32
0.001
0.016
0.42
0.33
0.001
0.11
0.001
Weighted UniFrac
0.25
0.001
0.018
0.34
0.23
0.001
0.090
0.001
Unweighted UniFrac
0.38
0.001
0.017
0.27
0.41
0.001
0.095
0.001
13b.
Dry season finches,
balanced by vampire
N = 20
Weighted Bray
-
Curtis
0.33
0.001
0.048
0.49
0.38
0.003
0.15
0.003
Unweighted Bray
-
Curtis
0.36
0.001
0.051
0.46
0.39
0.002
0.15
0.003
Weighted UniFrac
0.28
0.001
0.056
0.36
0.28
0.019
0.14
0.016
Unweighted UniFrac
0.42
0.001
0.055
0.35
0.45
0.003
0.14
0.016
14.
Feather isotope
finches, dry season,
balanced by vampire
N = 30
Weighted Bray
-
Curtis
0.30
0.001
0.14
0.001
Unweighted Bray
-
Curtis
0.29
0.001
0.14
0.001
Weighted UniFrac
0.18
0.002
0.12
0.002
Unweighted UniFrac
0.34
0.001
0.12
0.002
15.
Three ex
-
“
G.
difficilis
”,
balanced by vampire
N = 18
Weighted Bray
-
Curtis
0.5
7
0.001
0.20
0.001
Unweighted Bray
-
Curtis
0.5
8
0.001
0.22
0.001
Weighted UniFrac
0.4
6
0.00
1
0.23
0.001
Unweighted UniFrac
0.6
9
0.001
0.19
0.001
B.
Species
Island
Latitude
ANOSIM
Adonis
ANOSIM
Adonis
ANOSIM
Adonis
R
p
R
2
p
R
p
R
2
p
R
p
R
2
p
1. Full Dataset
N = 113
Weighted Bray
-
Curtis
0.27
0.001
0.077
0.003
0.21
0.001
0.078
0.001
0.14
0.001
0.048
0.001
Unweighted
Bray
-
Curtis
0.27
0.001
0.076
0.002
0.24
0.001
0.077
0.001
0.16
0.001
0.050
0.001
Weighted UniFrac
0.24
0.001
0.073
0.019
0.17
0.001
0.082
0.001
0.097
0.001
0.051
0.001
Unweighted UniFrac
0.34
0.001
0.080
0.001
0.27
0.001
0.062
0.001
0.19
0.001
0.045
0.001
2. November samples
N = 60
Weighted Bray
-
Curtis
0.40
0.001
0.11
0.004
0.36
0.001
0.072
0.001
-
0.01
0.50
0.024
0.028
Unweighted Bray
-
Curtis
0.38
0.001
0.11
0.001
0.38
0.001
0.079
0.001
-
0.01
0.56
0.024
0.027
Weighted UniFrac
0.36
0.001
0.090
0.051
0.35
0.001
0.086
0.001
-
0.04
0.62
0.025
0.036
Unweighted UniFrac
0.45
0.001
0.098
0.003
0.43
0.001
0.086
0.001
0.058
0.24
0.026
0.009
3
a
. No
G.
septentrionalis,
balanced by season
N = 82
Weighted Bray
-
Curtis
-
0.0
1
0.52
0.15
0.001
0.052
0.090
0.070
0.001
Unweighted Bray
-
Curtis
0.030
0.30
0.15
0.001
0.051
0.092
0.064
0.002
Weighted UniFrac
-
0.01
0.54
0.16
0.001
0.037
0.15
0.072
0.003
Unweighted UniFrac
0.070
0.11
0.14
0.001
0.034
0.17
0.060
0.002
6
a.
G. fuliginosa
,
balanced by season
N = 22
Weighted Bray
-
Curtis
0.10
0.21
0.12
0.05
Unweighted Bray
-
Curtis
0.10
0.20
0.11
0.09
Weighted UniFrac
0.06
0.30
0.10
0.21
Unweighted UniFrac
0.11
0.15
0.11
0.08
6
b.
G. fuliginosa
,
balanced
by island
*
N = 8
Weighted Bray
-
Curtis
0.35
0.07
0.23
0.06
Unweighted Bray
-
Curtis
0.37
0.09
0.23
0.07
Weighted UniFrac
0.35
0.10
0.25
0.11
Unweighted UniFrac
0.30
0.13
0.19
0.11
7
b.
G. fuliginosa
&
G.
fortis
,
balanced by species
N = 22
Weighted Bray
-
Curtis
0
0.48
0.048
0.29
Unweighted Bray
-
Curtis
0.020
0.36
0.052
0.21
Weighted UniFrac
0.049
0.22
0.057
0.17
Unweighted UniFrac
0.040
0.27
0.070
0.20
7
c.
G. fuliginosa
&
G.
fortis
,
balanced by island
N = 24
Weighted Bray
-
Curtis
0.060
0.15
0.060
0.066
Unweighted Bray
-
Curtis
0.031
0.28
0.054
0.12
Weighted UniFrac
0.038
0.22
0.045
0.18
Unweighted UniFrac
0.058
0.20
0.054
0.11
12
b.
Ground
finches
during the dry season,
balanced by species
*
*
N = 15 (n=3 x 5 sp.)
Weighted Bray
-
Curtis
0.33
0.016
0.37
0.008
Unweighted Bray
-
Curtis
0.35
0.008
0.39
0.002
Weighted UniFrac
0.32
0.027
0.41
0.010
Unweighted UniFrac
0.28
0.030
0.35
0.004
12
c.
Ground finches
during the dry season,
balanced by island
*
*
N = 24 (n=6 x 4 islands)
Weighted Bray
-
Curtis
0.37
0.001
0.25
0.001
0.20
0.005
-
-
Unweighted Bray
-
Curtis
0.34
0.001
0.26
0.001
0.24
0.001
-
-
Weighted
UniFrac
0.42
0.001
0.35
0.001
0.22
0.005
-
-
Unweighted UniFrac
0.35
0.001
0.22
0.001
0.32
0.001
-
-
15.
Three ex
-
“
G.
difficilis
”,
balanced by vampire
N = 18
Weighted Bray
-
Curtis
0.53
0.002
-
-
0.60
0.001
0.17
0.015
Unweighted Bray
-
Curtis
0.50
0.002
-
-
0.60
0.001
0.17
0.018
Weighted UniFrac
0.47
0.003
-
-
0.49
0.001
0.19
0.017
Unweighted UniFrac
0.50
0.002
-
-
0.56
0.001
0.13
0.087
16.
Herbivorous finch
es,
Santa Cruz, dry season,
~balanced species*
*
N = 10
Weighted
Bray
-
Curtis
0.28
0.025
0.30
0.03
Unweighted Bray
-
Curtis
0.41
0.003
0.32
0.008
Weighted UniFrac
0.12
0.20
0.24
0.28
Unweighted UniFrac
0.29
0.017
0.25
0.14
17.
G. septentrionalis,
balanced by island
N = 30
Weighted
Bray
-
Curtis
0.16
0.001
0.093
0.001
Unweighted Bray
-
Curtis
0.21
0.001
0.11
0.001
Weighted UniFrac
0.18
0.002
0.11
0.001
Unweighted UniFrac
0.23
0.001
0.092
0.001
18.
G. fuliginosa
&
G.
fortis
, w
et season,
balanced
by island
**
N = 10
Weighted Bray
-
Curtis
0.16
0.18
0.09
0.75
-
0.11
0.73
0.13
0.38
Unweighted Bray
-
Curtis
0.15
0.16
0.10
0.59
0.15
0.16
0.13
0.37
Weighted UniFrac
0.13
0.22
0.14
0.26
0.13
0.22
0.13
0.35
Unweighted UniFrac
0.16
0.18
0.12
0.43
0.16
0.18
0.13
0.28
19.
G. fuliginosa
&
G.
fortis
,
dry season,
balanced by island
**
N = 14
Weighted Bray
-
Curtis
0.25
0.10
0.10
0.05
0.32
0.004
0.15
0.002
Unweighted Bray
-
Curtis
0.25
0.11
0.11
0.03
0.29
0.005
0.16
0.002
Weighted
UniFrac
0.16
0.19
0.067
0.28
0.43
0.010
0.22
0.008
Unweighted UniFrac
0.23
0.11
0.089
0.11
0.26
0.014
0.13
0.005