Details

Autor(en) / Beteiligte

• Werner, Christiane
• Meredith, Laura K
• Ladd, S Nemiah
• Ingrisch, Johannes
• Kübert, Angelika
• van Haren, Joost
• Bahn, Michael
• Bailey, Kinzie
• Bamberger, Ines
• Beyer, Matthias
• Blomdahl, Daniel
• Byron, Joseph
• Daber, Erik
• Deleeuw, Jason
• Dippold, Michaela A
• Fudyma, Jane
• Gil-Loaiza, Juliana
• Honeker, Linnea K
• Hu, Jia
• Huang, Jianbei
• Klüpfel, Thomas
• Krechmer, Jordan
• Kreuzwieser, Jürgen
• Kühnhammer, Kathrin
• Lehmann, Marco M
• Meeran, Kathiravan
• Misztal, Pawel K
• Ng, Wei-Ren
• Pfannerstill, Eva
• Pugliese, Giovanni
• Purser, Gemma
• Roscioli, Joseph
• Shi, Lingling
• Tfaily, Malak
• Williams, Jonathan

Titel

Ecosystem fluxes during drought and recovery in an experimental forest

Ist Teil von

• Science (American Association for the Advancement of Science), 2021-12, Vol.374 (6574), p.1514-1518

Ort / Verlag

United States: The American Association for the Advancement of Science

Erscheinungsjahr

2021

Link zum Volltext

Quelle

Science Online_科学在线

Beschreibungen/Notizen

• Severe droughts endanger ecosystem functioning worldwide. We investigated how drought affects carbon and water fluxes as well as soil-plant-atmosphere interactions by tracing CO and deep water H O label pulses and volatile organic compounds (VOCs) in an enclosed experimental rainforest. Ecosystem dynamics were driven by different plant functional group responses to drought. Drought-sensitive canopy trees dominated total fluxes but also exhibited the strongest response to topsoil drying. Although all canopy-forming trees had access to deep water, these reserves were spared until late in the drought. Belowground carbon transport was slowed, yet allocation of fresh carbon to VOCs remained high. Atmospheric VOC composition reflected increasing stress responses and dynamic soil-plant-atmosphere interactions, potentially affecting atmospheric chemistry and climate feedbacks. These interactions and distinct functional group strategies thus modulate drought impacts and ecosystem susceptibility to climate change.