2023 Early Hearing Detection & Intervention Conference
March 5-7, 2023 • Cincinnati, OH
5/25/2021 | 2:00 PM - 3:30 PM | CLEARING UP MUDDY WATERS: EXPLORING CONTINENTAL-SCALE PATTERNS OF PARTICULATE NUTRIENT CONCENTRAITONS IN WADEABLE NEON STREAMS | Virtual Platform
CLEARING UP MUDDY WATERS: EXPLORING CONTINENTAL-SCALE PATTERNS OF PARTICULATE NUTRIENT CONCENTRAITONS IN WADEABLE NEON STREAMS
Processes regulating the production, transport, and processing of nutrients in particles are poorly characterized, limiting our understanding of the role of fine particulates in riverine carbon (C) and nutrient ([N]itrogen, [P]hosphorus) dynamics at continental scales. We explored how particulate nutrient concentrations varied among 20 wadeable stream sites within 14 NEON domains (2014 to 2020). Across sites, C was tightly coupled to N (R2 = 0.85) compared to P (R2 = 0.28). Particles were relatively P-rich (median molar C:P = 167, median molar N:P = 13), but this depended on watershed size: smaller watersheds had higher C:P than larger watersheds. Among domains, Atlantic neotropical (D04) sites had the lowest C:N, whereas the Northern Plains (D06) had the lowest C:P and N:P, on average. Temporal patterns of particulate C:N and C:P were also domain- and watershed-size-dependent, suggesting distinct particle sources and processing across space and time. For example, particulate C:N and C:P varied seasonally in forested Posey Creek (Virginia, USA), while in the larger Arikaree River (Colorado, USA) particulate C:N and C:P were more consistent across seasons. These patterns point to an intriguing biogeochemical role of particles in streams across the US.
- Carbon cycle
- Decomposition
- Nutrient cycling
Presentation:
This presentation has not yet been uploaded.
Handouts:
Handout is not Available
Transcripts:
CART transcripts are NOT YET available, but will be posted shortly after the conference
Presenters/Authors
David Manning
(), University of Nebraska at Omaha, davidmanning@unomaha.edu;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Arial Shogren
(), Department of Earth and Environmental Sciences, Michigan State University, shogrena@msu.edu;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Jonathan P. Benstead
(), The University of Alabama, jbenstead@ua.edu;
ASHA DISCLOSURE:
Financial -
Nonfinancial -