2023 Early Hearing Detection & Intervention Conference
March 5-7, 2023 • Cincinnati, OH
5/20/2019 | 11:45 AM - 12:00 PM | DECADAL DIFFERENCES IN RIPARIAN LEAF LITTER SUBSIDIES AND DECOMPOSITION AT AUGUSTA CREEK | 151 G
DECADAL DIFFERENCES IN RIPARIAN LEAF LITTER SUBSIDIES AND DECOMPOSITION AT AUGUSTA CREEK
Augusta Creek, a tributary in Southwest Michigan, has hosted field studies that revolutionized stream ecology and changed the way riverine systems were viewed. Descriptive studies on leaf litter decomposition in the 1970’s served as formative evidence for the River Continuum Concept. Yet, these studies were limited by their time. Genomic technologies were not developed for microbial community assessment and riparian invaders were not yet a concern. Several invasions, including Common Buckthorn and Emerald Ash Borer, reshaped riparian conditions and leaf litter inputs of Augusta Creek; therefore, it serves as an ideal site to revisit the hypotheses tested forty years ago, updated to address colonizing microbes and invasion dynamics. The aim was to determine how leaf taxa (invasive vs. native) alters leaf litter decomposition rates as well as the macroinvertebrate and microbial communities. Preliminary analysis determined faster decomposition and different microbial colonizers in the invasive leaf litter. We also compare these findings to those of Petersen and Cummins (1974), who found different processing rates and colonization among leaf taxa. This experiment continues the legacy of leaf litter decomposition research at Augusta Creek, informing larger fields of invasive species and microbial ecology.
- Decomposition
- Invasives
- Bacteria
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Presenters/Authors
Courtney Larson
(), Michigan State University, courtneyelarson126@gmail.com;
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M. Eric Benbow
(), Michigan State University, benbow@msu.edu;
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