A comparison of stream-bottom invertebrate sampling methods : an honors thesis (HONRS 499)

Two methods of sampling stream-bottom invertebrates, surber sampling and D-net (or kick-and-net), were performed along a presumed water pollution gradient in the White River near Muncie, Indiana. The objective was to determine if the methods gave similar results. The surber sampling resulted in a larger total number of organisms per sample. However, the number of organisms obtained per unit time was similar for both methods. The site with the presumed greatest amount of pollution had the highest relative abundance of species indicative of pollution. The other two sites had greater numbers of species indicative of more pollution-free waters. Similar between site differences in indicator species abundances were found in results from the two sampling methods.Honors CollegeThesis (B.?