Paradoxes of Poweshiek Skipperling (Oarisma poweshiek) (Lepidoptera: Hesperiidae): Abundance Patterns and Management of a Highly Imperiled Prairie Species
Figure 2
Mean and median O. poweshiek relative abundance (individuals per km per unit survey) and percent unit surveys with the species found, by year-burn. For chi-square goodness of fit tests comparing O. poweshiek distribution among different years since last fire, expected values are calculated proportional to distance surveyed in each category. (a) In all fire-managed units (chi-square = 514.9 and ) and (b) in peak vegetation (chi-square = 576.3 and ).
