Articles | Volume 22, issue 20
https://doi.org/10.5194/bg-22-5833-2025
© Author(s) 2025. 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-22-5833-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
22 Oct 2025
Research article |
| 22 Oct 2025
| 22 Oct 2025
The use of newly assimilated photosynthates by soil autotrophic and heterotrophic respiration on a diurnal scale
Department of Ecology and Conservation Biology, Texas A&M University, College Station, TX, United States
Bhaskar Mitra
Information and Computational Science Department, The James Hutton Institute, Aberdeen, UK
Benju Baniya
Department of Ecology and Conservation Biology, Texas A&M University, College Station, TX, United States
Dohee Kim
Department of Ecology and Conservation Biology, Texas A&M University, College Station, TX, United States
Asko Noormets
CORRESPONDING AUTHOR
Department of Ecology and Conservation Biology, Texas A&M University, College Station, TX, United States
Related authors
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Linqing Yang and Asko Noormets
Earth Syst. Sci. Data, 13, 1461–1475, https://doi.org/10.5194/essd-13-1461-2021, https://doi.org/10.5194/essd-13-1461-2021, 2021
Short summary
Short summary
We present a flux seasonality metrics database (FSMD) depicting a set of standardized metrics of ecosystem biogeochemical fluxes of CO2, water, and energy, including transition dates, phase lengths, and rates of change with uncertainty estimates. FSMD allows assessment of spatial and temporal patterns in developmental dynamics, validation of novel aspects of phenology product, and process models. It is calculated from FLUXNET2015 data product and will be updated with new FLUXNET data releases.
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Short summary
Cospectral analysis was used to quantify coupling of autotrophic and heterotrophic soil respiration (Ra and Rh) to plant carbohydrate status in a subtropical pine forest in the southern US. Rh showed stronger diurnal links with gross primary productivity (GPP) than Ra, and lagged GPP by 2–4 h, suggesting rapid transfer of carbohydrates to the soil. Soil temperature and moisture had strong cospectral peaks at synoptic scales, but were not causal drivers at the diurnal scale.
Cospectral analysis was used to quantify coupling of autotrophic and heterotrophic soil...
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