Biological traits and community patterns of Trichoptera at two Patagonian headwater streams affected by volcanic ash deposition

Zoological Studies

Table 3 Results of student's t test for dependent samples

Dependent samples examining the effects of volcanic ashfall on species richness, total density, Shannon diversity index (H′), and density of functional feeding groups on the two studied sites (Northwestern Patagonia Argentina). nd, variable non detected on the river. *p < 0.05 and ** p < 0.005.