8. Colonization of Created Wetlands at the Granville Schools Land Lab by Odonates

Siyang Liu Denison University
Faculty Sponsor(s): Geoffrey Smith Denison University
Odonate larvae play an important role in freshwater ecosystems. They feed on small aquatic insects and zooplankton and are in turn the prey of vertebrates like fish. We studied four created wetlands in a restored prairie/wetland complex at the Granville Schools Land Lab (central Ohio) from 2015 to 2018. Fish are present in two of the four wetlands. We hypothesized that the presence of fish would have a significant impact on the diversity, abundance, and size of odonates due to predation. We collected macroinvertebrates from three permanent sites in each wetland monthly from March to October each year. We recorded nine orders of macroinvertebrates with the most common ones being Odonata, Hemiptera, Coleoptera, and Diptera. We recorded six families of Odonata with the most common being Libellulidae, Aeshnidae, and Coenagrionidae. There was a significant difference in the diversity, number, and size of odonates in wetlands with and without fish, supporting the hypothesis that fish can reduce the diversity, abundance, and size of odonate larvae.
Biology
Poster Presentation

When & Where

Irwin Library 3rd Floor