Thermal responses of dissolved organic matter under global change

Ang Hu, Kyoung-Soon Jang, Andrew J. Tanentzap, Wenqian Zhao, Jay T. Lennon, Jinfu Liu, Mingjia Li, James Stegen, Mira Choi, Yahai Lu, Xiaojuan Feng and Jianjun Wang ()
Additional contact information
Ang Hu: Chinese Academy of Sciences
Kyoung-Soon Jang: Korea Basic Science Institute
Andrew J. Tanentzap: University of Cambridge
Wenqian Zhao: Chinese Academy of Sciences
Jay T. Lennon: Indiana University
Jinfu Liu: Chinese Academy of Sciences
Mingjia Li: Chinese Academy of Sciences
James Stegen: Pacific Northwest National Laboratory
Mira Choi: Korea Basic Science Institute
Yahai Lu: Peking University
Xiaojuan Feng: Chinese Academy of Sciences
Jianjun Wang: Chinese Academy of Sciences

Nature Communications, 2024, vol. 15, issue 1, 1-15

Abstract: Abstract The diversity of intrinsic traits of different organic matter molecules makes it challenging to predict how they, and therefore the global carbon cycle, will respond to climate change. Here we develop an indicator of compositional-level environmental response for dissolved organic matter to quantify the aggregated response of individual molecules that positively and negatively associate with warming. We apply the indicator to assess the thermal response of sediment dissolved organic matter in 480 aquatic microcosms along nutrient gradients on three Eurasian mountainsides. Organic molecules consistently respond to temperature change within and across contrasting climate zones. At a compositional level, dissolved organic matter in warmer sites has a stronger thermal response and shows functional reorganization towards molecules with lower thermodynamic favorability for microbial decomposition. The thermal response is more sensitive to warming at higher nutrients, with increased sensitivity of up to 22% for each additional 1 mg L-1 of nitrogen loading. The utility of the thermal response indicator is further confirmed by laboratory experiments and reveals its positive links to greenhouse gas emissions.

Date: 2024
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.nature.com/articles/s41467-024-44813-2 Abstract (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-44813-2

Ordering information: This journal article can be ordered from
https://www.nature.com/ncomms/

DOI: 10.1038/s41467-024-44813-2

Access Statistics for this article

Nature Communications is currently edited by Nathalie Le Bot, Enda Bergin and Fiona Gillespie

More articles in Nature Communications from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().