Research Article
Spatial Distribution and Dispersal Patterns of Central North American Freshwater Crayfish (Decapoda: Cambaridae) with Emphasis on Implications of Glacial Refugia
Table 1
Results of Mann-Whitney test for species abundance between glaciated ( = 141) and unglaciated ( = 35) regions (α = 0.05) and proportion of sites within each region that a species was collected for the six species occurring in both regions. Superscripts denote primary (1), secondary (2), or tertiary (3) species. Abundance is measured by catch-per-minute for tertiary and secondary species and number of individuals for primary species.
|