2022 Early Hearing Detection & Intervention Virtual Conference
March 13 - 15, 2022
5/25/2021 | 2:00 PM - 3:30 PM | IMPACT OF RIPARIAN FLORAL INVASIONS ON THE GROWTH AND SURVIVORSHIP OF AN INVERTEBRATE SHREDDER | Virtual Platform
IMPACT OF RIPARIAN FLORAL INVASIONS ON THE GROWTH AND SURVIVORSHIP OF AN INVERTEBRATE SHREDDER
Autumn leaf senescence is a major contributor of allochthonous deposits of organic material to stream energy systems. Replacing native with invasive species in riparian zones may impact nutrient availability and content of leaf deposits, as many invasive species favor fast growth over constructing more robust leaf structures. We compared larval growth of a common shredder, Tipula, fed on ten species of commonly-occurring native and invasive riparian plants of the eastern U.S. A recirculating tank system was used to house 100 larva as individual replicates; thus, all leaves were exposed to the same microbiome. Growth was collected biweekly and tanks with dead larva were replaced. Results varied greatly by species, with patterns suggesting that terrestrial flora invasions are associated with accelerated leaf decomposition. Findings suggest these invasions may result in enhanced leaf processing rates that are species-specific. Future analyses will explore if senesced leaf traits, such as toughness or chemical composition, explain the pattern in all tested leaf species. Three of the top five growth rates were observed with invasive species. The two invasive species that resulted in the fastest growth, Celastrus orbiculatus and Fallopia japonica, also exhibited the highest survivorship.
- Ecosystem functioning
- Detritivore
- Connectivity
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Presenters/Authors
Liane Moos
(), Chatham University, liane.moos@chatham.edu;
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Ryan Utz
(), Chatham University, rutz@chatham.edu;
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Roy Weitzell
(), Chatham University, rweitzell@chatham.edu;
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