Paradoxes of Poweshiek Skipperling (Oarisma poweshiek) (Lepidoptera: Hesperiidae): Abundance Patterns and Management of a Highly Imperiled Prairie Species

Table 2

Mean ± SD, median, third quartile value (between median and maximum), and maximum value of O. poweshiek individuals/hr by management type. The first quartile value is zero for all samples.

Management type	𝑁 unit surveys	Mean	SD	Median	Third quartile	Maximum
Peak vegetation
Idle	6	2.90	3.42^A	2.49	2.80	9.32
Hay	10	4.40	6.95^A	2.07	5.17	22.60
Fire	219	17.09	36.49^A	0.00	12.43	248.56
Secondary vegetation
Hay	11	10.49	21.14^A	1.55	6.21	70.42
Fire	74	1.21	4.06^B	0.00	0.00	24.86

Within each vegetative type, variates sharing the same letter are not statistically different by the Mann-Whitney 𝑈 test (two-tailed 𝑃<0.05).