2023 Early Hearing Detection & Intervention Conference
March 5-7, 2023 • Cincinnati, OH
5/21/2018 | 12:15 PM - 12:30 PM | WARMING INDUCES ASYMMETRIC CONVERGENCE OF STREAM METABOLIC BALANCE | 330 B
WARMING INDUCES ASYMMETRIC CONVERGENCE OF STREAM METABOLIC BALANCE
Quantifying the temperature dependence of stream metabolism is critical for predicting how stream ecosystems will respond to climate warming. We modeled diel DO dynamics and estimated the activation energies of GPP and ER in streams distributed across six biomes of North America. The difference in the activation energies of GPP and ER, which describes the temperature dependence of GPP/ER, decreased with mean daily stream temperature and GPP/ER. This relationship allowed us to predict warming-induced changes in whole-stream GPP/ER as a function of stream temperature and current GPP/ER. We applied these relationships to a global compilation of stream metabolism and found that a 1 °C increase in stream temperature induced convergence in stream metabolic balance, realized as reduced inter-site variability in GPP/ER. GPP/ER in streams with higher current temperatures and GPP/ER is predicted to decrease in response to warming, whereas in streams with lower current temperatures and GPP/ER it is expected to increase, although by a smaller magnitude. We estimated a 23.6% increase (0.019 Pg/year) in carbon release from stream metabolism globally under a 1 °C increase in stream temperature.
- Temperature
- Ecosystem
- Modeling
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
Chao Song
(), Michigan State University, chaosong@msu.edu;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Walter Dodds
(), Kansas State University, wkdodds@ksu.edu;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Janine Ruegg
(), École Polytechnique Fédérale de Lausanne, jrueegg@GMAIL.COM;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Alba Argerich
(), University of Missouri, alba.argerich@oregonstate.edu;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Christina Baker
(), University of Alaska Fairbanks, clbaker5@alaska.edu;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
William Breck Bowden
(), University of Vermont, breck.bowden@uvm.edu;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Michael Douglas
(), University of Western Australia & Charles Darwin University, michael.douglas@uwa.edu.au;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Kaitlin Farrell
(), University of Georgia, kfarrel@uga.edu;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Michael B. Flinn
(), Watershed Studies Institute, Dept. of Biological Sciences, Murray State University, mflinn@murraystate.edu;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Erica Garcia
(), Charles Darwin University, erica.garcia@cdu.edu.au;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Ashley Helton
(), University of Connecticut, ashley.helton@uconn.edu;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Tamara Harms
(), University of Alaska Fairbanks, tamara.harms@alaska.edu;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Shufang Jia
(), Kansas State University, shufangj@ksu.edu;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Jeremy Jones
(), Univeristy of Alaska Fairbanks, jbjonesjr@alaska.edu;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Lauren Koenig
(), University of New Hampshire, lauren.koenig@unh.edu;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
John S. Kominoski
(), Florida International University, jkominoski@gmail.com;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
William H. McDowell
(), University of New Hampshire, bill.mcdowell@unh.edu;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Damien McMaster
(), Charles Darwin University, Damien.McMaster@cdu.edu.au;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Samuel P. Parker
(), University of Vermont, samuel.parker@uvm.edu;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Amy D. Rosemond
(), University of Georgia, rosemond@uga.edu;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Claire Ruffing
(), University of British Columbia, ruffing.cathcart@ubc.ca;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Ken Sheehan
(), University of New Hampshire, ken.r.sheehan@gmail.com;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Matt Trentman
(), Flathead Lake Biological Station, University of Montana, matt.trentman@flbs.umt.edu;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Matt Whiles
(), University of Florida, mwhiles@ufl.edu;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Wilfred Wollheim
(), University of New Hampshire, wil.wollheim@unh.edu;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Ford Ballantyne
(), University of Georgia, fb4@uga.edu;
ASHA DISCLOSURE:
Financial -
Nonfinancial -