EARLY HEARING DETECTION AND INTERVENTION VIRTUAL CONFERENCE
MARCH 2-5, 2021
(Virtually the same conference, without elevators, airplane tickets, or hotel room keys)
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
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Presenters/Authors
David Manning
(), University of Nebraska at Omaha, davidmanning@unomaha.edu;
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Arial Shogren
(), Department of Earth and Environmental Sciences, Michigan State University, shogrena@msu.edu;
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Jonathan P. Benstead
(), The University of Alabama, jbenstead@ua.edu;
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