Ecological Archives E086-112-A1

Mary V. Price, Nickolas M. Waser, Rebecca E. Irwin, Diane R. Campbell, and Alison K. Brody. 2005. Temporal and spatial variation in pollination of a montane herb: a seven-year study. Ecology 86:2106–2116.

Appendix A. Primary patterns of variation among sites, years, and site × year combinations, in rates of visitation by five classes of visitor to Ipomopsis aggregata.

TABLE A1. Overall results of MANOVA.


Source of variation
Wilks’
df
F
P

Year
0.006
30, 34
2.88
0.002
Site
0.303
10, 16
1.31
0.306
Year  ×  Site
0.669
60, 1591.2
2.37
<0.001

Year, Site, and Year × Site interaction are independent variables. Dependent variables are five visitor groups:  hummingbirds, long-tongued bumble bees, Lepidoptera, nectar-robbing bumble bees, and pollen-eating small insects. 

 

 

TABLE A2. Total structure coefficients for significant CDA axes .


 
Between-year
Between-site
Site  ×  Year

 
CDA 1
CCDA 1
CDA 1
CDA 2
Eigenvalue
0.421
0.110
0.512
0.431
%Variance
54.9%
78.5%
36.1%
30.3%
Hummingbird rate
-0.340
0.526
-0.379
0.6567
Long-tongued bee rate
0.090
-0.647
0.182
0.1707
Lepidoptera rate
-0.134
0.419
-0.305
0.4656
Nectar robber bee rate
0.932
-0.037
0.840
0.0349
Small insect rate
-0.170
0.480
-0.310
0.6707

‡ CDA = canonical discriminant axes. Total structure coefficients indicate the correlation between the value of each dependent variable and score on the discriminant axis.

 

 

TABLE A3. Class (Year, Site, Year × Site) mean scores on significant CDA axes.


Between-year
 
Between-site
 
Site × Year

Class
Mean 1
Class
Mean CDA 1
Class
Mean CDA 1
Mean CDA 2
Class
Mean CDA 1
Mean CDA 2
Class
Mean CDA 1
Mean CDA 2

1996
0.042
 
P
0.146
P, 1996
-0.019
-0.330
 
T, 1996
0.316
-0.480
V, 1996
0.054
-0.199
1997
-0.038
 
T
-0.464
P, 1997
-0.181
0.126
 
T, 1997
0.315
0.613
V, 1997
0.019
0.460
1998
-0.160
 
V
0.302
P, 1998
-0.412
0.237
 
T, 1998
0.139
0.076
V, 1998
-0.114
0.023
1999
1.720
 
 
P, 1999
2.180
0.000
 
T, 1999
1.581
0.236
V, 1999
1.181
-0.048
2000
-0.423
 
 
P, 2000
-0.639
-0.019
 
T, 2000
-0.260
-0.762
V, 2000
-0.397
-0.750
2001
-0.268
 
 
P, 2001
-0.319
0.449
 
T, 2001
0.043
-0.046
V, 2001
-0.849
1.351
2002
-0.336
 
 
P, 2002
-0.229
-0.490
 
T, 2002
-0.001
-0.224
V, 2002
-0.589
-1.273



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