Articles | Volume 20, issue 15
https://doi.org/10.5194/bg-20-3353-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-20-3353-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
11 Aug 2023
Research article |
| 11 Aug 2023
| 11 Aug 2023
Physical and stoichiometric controls on stream respiration in a headwater stream
Jancoba Dorley
Gerald May Department of Civil, Construction & Environmental Engineering, University of New
Mexico, Albuquerque, NM, USA
Joel Singley
Environmental Studies Program, University of Colorado, Boulder, CO, USA
Biology, Marine Biology, and Environmental Science, Roger Williams
University, Bristol, RI, USA
Tim Covino
Ecosystem Science and Sustainability, Colorado State University, Fort
Collins, CO, USA
Department of Land Resources and Environmental Sciences, Montana State
University, Bozeman, MT, USA
Kamini Singha
Geology and Geological Engineering, Hydrologic Science and Engineering
Program, Colorado School of Mines, Golden, CO, USA
Michael Gooseff
Civil, Environmental and Architectural Engineering, University of
Colorado, Boulder, CO, USA
Institute of Arctic and Alpine Research, University of Colorado,
Boulder, CO, USA
David Van Horn
Department of Biology, University of New Mexico, Albuquerque, NM, USA
Gerald May Department of Civil, Construction & Environmental Engineering, University of New
Mexico, Albuquerque, NM, USA
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Zhechen Zhang, Huade Guan, Erik Veneklaas, Kamini Singha, and Okke Batelaan
Hydrol. Earth Syst. Sci., 29, 3975–3992, https://doi.org/10.5194/hess-29-3975-2025, https://doi.org/10.5194/hess-29-3975-2025, 2025
Short summary
Short summary
We developed a new method using sap-flow and water-potential data to estimate key plant water-use properties without destructive sampling. Testing on drooping sheoak showed that our approach captures seasonal changes in plant water transport and that these hydraulic properties have seasonal variation. This method could improve models predicting how vegetation responds to drought and climate change.
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Short summary
We quantified how microbial respiration is controlled by discharge and the supply of C, N, and P in a stream. We ran two rounds of experiments adding a conservative tracer, an indicator of aerobic respiration, and nutrient treatments: a) N, b) N+C, c) N+P, and d) C+N+P. Microbial respiration remained similar between rounds and across nutrient treatments. This suggests that complex interactions between hydrology, resource supply, and biological community drive in-stream respiration.
We quantified how microbial respiration is controlled by discharge and the supply of C, N, and P...
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