Status and Trend of Regal Fritillary (Speyeria idalia) (Lepidoptera: Nymphalidae) in the 4th of July Butterfly Count Program in 1977–2014
Table 5
Results of Pearson product moment and Spearman rank correlations of a Regal Fritillary abundance variable to presence-absence (percent) variables. NS = not significant.
Pearson
Spearman rank
R
P
R
P
1977–2014 ( years)
Regal individuals reported that year divided by N counts in main range with:
Percent counts with any Regal reported that year
North America
+0.20196
0.2240
+0.34446
<0.05
Main range
+0.06216
0.7108
+0.16635
NS
Total Regals per party-hour in core range with:
Percent counts with any Regal reported that year in core range
+0.31101
0.0574
+0.28009
<0.10
1991–2014 ( years)
Regal individuals reported that year divided by N counts in main range with:
Percent counts with any Regal reported that year
North America
+0.73457
0.0000
+0.70102
0.0000
Main range
+0.65802
0.0005
+0.59478
<0.01
Total Regals per party-hour in core range with:
Percent counts with any Regal reported that year in core range
