2023 Early Hearing Detection & Intervention Conference
March 5-7, 2023 • Cincinnati, OH
5/23/2019 | 9:30 AM - 9:45 AM | UNDERSTANDING THE ENVIRONMENTAL CONTEXT OF ALGAL PRIMING OF COARSE PARTICULATE ORGANIC MATTER DECOMPOSITION IN STREAMS | 254 B
UNDERSTANDING THE ENVIRONMENTAL CONTEXT OF ALGAL PRIMING OF COARSE PARTICULATE ORGANIC MATTER DECOMPOSITION IN STREAMS
Streams can obtain energy from two main sources: autochthonous organic matter or allochthonous inputs of organic matter. Interactions between organisms involved in these two types of energy acquisition exist within microcommunities of algae, fungi, and bacteria that form on inert and organic substrata. Previous experiments have observed interactions between photosynthetic and heterotrophic organisms within biofilms through algal priming. The release of a labile carbon source by algae may stimulate the decomposition of coarse particulate organic matter by heterotrophic organisms. To better understand algal priming, we evaluated the environmental factors that may influence the process. Cotton strips were placed in either darkened and transparent tubes and anchored to the bottom of 18 streams of varying stream order and nutrient content. The cotton strips were then evaluated for algal biomass and tensile strength to quantify decomposition. Cotton strips with higher algal biomass appeared to have low tensile strength associated with more decomposition. Other factors, such as temperature and nutrient content also appear to be important and may provide important context for better understanding the role of algal priming in streams.
- Microbial
- Organic Matter
- Decomposition
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Presenters/Authors
Emily Ashberry
(), Bloomsburg University, ela77590@huskies.bloomu.edu;
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Steven Rier
(), Bloomsburg University, srier@bloomu.edu;
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Jennifer Soohy
(), Bloomsburg University, jat18435@huskies.bloomu.edu;
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