2023 Early Hearing Detection & Intervention Conference
March 5-7, 2023 • Cincinnati, OH
5/23/2018 | 9:00 AM - 9:15 AM | EXAMINING THE RELATIONSHIP BETWEEN MACROINVERTEBRATE COMMUNITY STRUCTURE AND HABITAT CONDITIONS IN GREAT LAKES INTERDUNAL WETLANDS | 430 B
EXAMINING THE RELATIONSHIP BETWEEN MACROINVERTEBRATE COMMUNITY STRUCTURE AND HABITAT CONDITIONS IN GREAT LAKES INTERDUNAL WETLANDS
Determining how environmental conditions dictate community structure in a habitat is a fundamental question in community ecology. Great Lakes interdunal wetlands are coastal wetlands between sand dunes that follow a successional gradient from young, open-dune wetlands to older, wooded-dune wetlands. We investigated how habitat conditions dictate macroinvertebrate community structure (taxonomic composition, diversity, and feeding guild structure) in 13 interdunal wetlands in northern Michigan. We tested the hypothesis that if environmental conditions determine community structure, then interdunal wetlands with similar conditions will have similar community structure. We identified 82 taxa, with individual wetland species richness ranging from 5 to 24 and Shannon-Weaver diversity ranging from 0.46 to 2.42. An NMDS analysis showed separation between tightly clustered open-dune wetlands and a larger cluster of wooded-dune wetlands based on temperature, pH, distance from the lakeshore, and successional stage. Major feeding guilds differ between the habitat types, with open-dune wetlands characterized by predators and collector-gatherers and an absence of parasites and collector-filterers, while wetlands in wooded habitat have high proportions of collector-filterers. This study highlights the importance of small differences in environmental conditions in shaping community structure across a successional gradient.
- Community
- Invertebrate
- Functional Feeding Groups
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Presenters/Authors
Christopher Frazier
(), Texas A&M Corpus Christi, christopher.frazier@tamucc.edu;
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Tiffany Schriever
(), Western Michigan University, tiffany.schriever@wmich.edu;
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