2023 Early Hearing Detection & Intervention Conference
March 5-7, 2023 • Cincinnati, OH
5/20/2019 | 9:45 AM - 10:00 AM | FACTORS INFLUENCING POLYPHOSPHATE STORAGE IN STREAM BIOFILMS ACROSS A PHOSPHORUS GRADIENT | 254 B
FACTORS INFLUENCING POLYPHOSPHATE STORAGE IN STREAM BIOFILMS ACROSS A PHOSPHORUS GRADIENT
Polyphosphate plays a myriad of physiological roles in organisms spanning every domain of life. Although likely important, we are just beginning to understand the role these phosphate chains play in the biogeochemistry of aquatic systems. The purpose of this study was to examine the polyphosphate content of stream biofilms in 20 streams sampled at base-flow throughout central Pennsylvania. These streams represented a gradient of potential phosphorus impact, driven by varying agricultural intensity in watersheds upstream of sample sites. We found that polyphosphate content as a proportion of total phosphorus content of the biofilm was positively related to algal biomass and negatively related to water column soluble reactive phosphorus (SRP). This relationship seems to be influenced mainly by the presence of Cladophora sp. in streams with low base-flow SRP. It is likely that the presence of polyphosphate in these high biomass assemblages might indicate a stress response to low phosphorus and possibly indicate a strategy for maximizing future uptake and storage of phosphorus delivered in storm runoff.
- Periphyton
- Eutrophication
- Algae
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Presenters/Authors
Steven Rier
(), Bloomsburg University, srier@bloomu.edu;
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Aaron Gordon-Weaver
(), Bloomsburg University, amg43366@huskies.bloomu.edu;
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Jennifer Soohy
(), Bloomsburg University, jat18435@huskies.bloomu.edu;
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Emily Ashberry
(), Bloomsburg University, elashberry3@gmail.com;
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