2022 Early Hearing Detection & Intervention Virtual Conference
March 13 - 15, 2022
5/22/2018 | 10:00 AM - 10:15 AM | INFLUENCE OF LOGJAMS ON DENITRIFICATION IN A MONTANE STREAM NETWORK | 330 B
INFLUENCE OF LOGJAMS ON DENITRIFICATION IN A MONTANE STREAM NETWORK
In the North St. Vrain stream network, located in Rocky Mountain National Park, Colorado, valley morphology and land use determine logjam density, creating spatial heterogeneity in channel form and carbon storage. Such patterns influence stream respiration rates, thereby altering rates of denitrification and spatial patterns of nitrate removal from streams. We use a stream network simulation model that incorporates the effects of whole-stream respiration on denitrification to contextualize the potential impact of logjam-driven hotspots on whole-network denitrification. Our results suggest that carbon storage and changes to channel morphology associated with logjams create hotspots of denitrification that influence patterns of whole network nitrate removal. Further, our model suggests that land management actions which influence stream morphology may also alter stream denitrification rates.
- Geomorphology
- Carbon
- Spatial
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Presenters/Authors
Sam Carlson
(), Montana State University, sam.p.carlson@gmail.com;
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Geoffrey Poole
(), Montana State University, Montana Institute on Ecosystems, gpoole@montana.edu ;
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Ellen Wohl
(), Colorado State University, Ellen.Wohl@colostate.edu ;
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Robert O. Hall
(), Flathead Lake Biological Station, University of Montana, bob.hall@flbs.umt.edu;
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