EARLY HEARING DETECTION AND INTERVENTION VIRTUAL CONFERENCE
MARCH 2-5, 2021
(Virtually the same conference, without elevators, airplane tickets, or hotel room keys)
5/22/2019 | 9:00 AM - 9:15 AM | CARBON EXPORT AND STORAGE ACROSS CHARRED COLORADO LANDSCAPES: FROM SOILS TO STREAMS | 250 DE
CARBON EXPORT AND STORAGE ACROSS CHARRED COLORADO LANDSCAPES: FROM SOILS TO STREAMS
Any shift in disturbance regime may disrupt an ecosystem’s carbon balance, resulting in C loss to the atmosphere, contributing to climate change. Warming climate will continue to increase the size and severity of fire, particularly in the Intermountain West. Predicting how fire alters the net ecosystem carbon balance requires us to understand how carbon is stored, processed, and transferred in both terrestrial and aquatic ecosystems. Results from paired watersheds and laboratory bioassays focused on five 2002 severe fires in Colorado provide insight as to how organic matter (OM) is processed from hillslopes to streams. Comparing results from intact soil column experiments to soil extractions and stream samples, suggests that the majority of this OM does not make it to the stream, potentially getting sorbed deeper in the mineral rich, organic poor, portion of the soil. Interestingly, stream dissolved OM (DOM) does not reflect the systematic shifts in quality within the terrestrial system. Further, burned and unburned watersheds export statistically similar amounts of DOM per unit area. This suggests that fire-affected landscapes are losing a greater fraction of the soil OM to the stream and atmosphere each year.
- Disturbance
- Organic Matter
- Carbon
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Presenters/Authors
Rebecca Barnes
(), Colorado College, rebecca.barnes@coloradocollege.edu;
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Kyra Wolf
(), University of Montana, kyra.wolf@umconnect.umt.edu;
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Asheton Gilbertson
(), Colorado College, agilby96@gmail.com;
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