2023 Early Hearing Detection & Intervention Conference
March 5-7, 2023 • Cincinnati, OH
5/25/2021 | 2:00 PM - 3:30 PM | PATTERNS OF STREAM AND LAKE CARBON FLUX IN SIMULATED AQUATIC NETWORKS | Virtual Platform
PATTERNS OF STREAM AND LAKE CARBON FLUX IN SIMULATED AQUATIC NETWORKS
Significant amounts of terrestrial carbon (C) are transferred to inland waters. Whether this C is emitted or exported is generally investigated separately for streams versus lakes. As these systems are connected within networks, maintaining this divide may impede our regional scale understanding of C fluxes. Here we investigate C fluxes in simulated networks of connected streams and lakes. C inputs to networks in gaseous form were essentially entirely emitted within the network boundary. C inputs in organic form, however, have to first be mineralized before being able to be emitted. The proportion of this C mineralized at the network scale was driven by the travel time and the combination of hydrological regime and network configuration. For a similar residence time, networks with higher runoff but with more lakes were able to mineralize more C than those with lower runoff and fewer lakes. Hydrological regimes further affected the relative contribution of streams and lakes to the whole network total organic C mineralization. Our simulations suggest emergent behaviors in C processing when lakes and streams are integrated into networks, and provide a framework to understand regional scale C fluxes.
- Freshwater continuum
- Residence time
- Meta-ecosystems
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Presenters/Authors
Dominic Vachon
(), Department of Ecology and Environmental Science, Umeå University, 901 87 Umeå, Sweden, domvachon@gmail.com;
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Ryan Sponseller
(), Department of Ecology and Environmental Science, Umeå University, 901 87 Umeå, Sweden, ryan.sponseller@emg.umu.se;
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Jan Karlsson
(), Umeå University, jan.p.karlsson@emg.umu.se;
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