Comparison of Four Techniques for Sampling Wetland Hemiptera (Heteroptera, Auchenorrhyncha)
Page, Brandon B.
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Insect sampling techniques can result in different estimates of species richness, diversity, and evenness. Hemipteroid insects were collected within a freshwater marsh over the course of three months, in Van Meter State Park, Saline County, Missouri. Techniques utilized were three vacuums, the D-Vac, G-Vac, E-Vac, and sweep netting in order to determine the most efficient sampling method. All three sampling months were significantly different from each other (P =.001). There was a significant difference among the sampling methods (P =.003). The D-Vac collected the largest number of specimens (1015), followed by the G-Vac (670), the E-Vac (280), and the sweep net (31). The D-Vac and G-Vac produced nearly the same number of unique species(D-Vac=15, G-Vac=14), nearly identical total number of species (D-Vac =30, G-Vac=28), and had similar diversity values (D-Vac=1.63, G-Vac=1.45), suggesting that these techniques are similar in effectiveness. The E-Vac collected the fewest number of unique and total species out of the vacuum techniques (3 unique species, 14 total species). The sweep net collected the least number of unique and total species out of all the sampling techniques (0 unique species, 7 total species) suggesting it is was not an effective sampling technique for marsh dwelling hemipteroid insects. All three vacuum techniques have different advantages and either a D-Vac or G-Vac should be used to sample wetland Hemiptera.