Decadal increases in carbon uptake offset by respiratory losses across northern permafrost ecosystems

Details

• Journal Title:
  Nature Climate Change
• Personal Author:
  See, Craig R. ; Virkkala, Anna-Maria ; Natali, Susan M. ; Rogers, Brendan M. ; Mauritz, Marguerite ; Biasi, Christina ; Bokhorst, Stef ; Boike, Julia ; Bret-Harte, M. Syndonia ; Celis, Gerardo ; Chae, Namyi ; Christensen, Torben R. ; Murner, Sara June ; Dengel, Sigrid ; Dolman, Han ; Edgar, Colin W. ; Elberling, Bo ; Emmerton, Craig A. ; Euskirchen, Eugénie S. ; Göckede, Mathias ; Grelle, Achim ; Heffernan, Liam ; Helbig, Manuel ; Holl, David ; Humphreys, Elyn ; Iwata, Hiroki ; Järveoja, Järvi ; Kobayashi, Hideki ; Kochendorfer, John ; Kolari, Pasi ; Kotani, Ayumi ; Kutzbach, Lars ; Kwon, Min Jung ; Lathrop, Emma R. ; López-Blanco, Efrén ; Mammarella, Ivan ; Marushchak, Maija E. ; Mastepanov, Mikhail ; Matsuura, Yojiro ; Merbold, Lutz ; Meyer, Gesa ; Minions, Christina ; Nilsson, Mats B. ; Nojeim, Julia ; Oberbauer, Steven F. ; Olefeldt, David ; Park, Sang-Jong ; Parmentier, Frans-Jan W. ; Peichl, Matthias ; Peter, Darcy ; Petrov, Roman ; Poyatos, Rafael ; Prokushkin, Anatoly S. ; Quinton, William ; Rodenhizer, Heidi ; Sachs, Torsten ; Savage, Kathleen ; Schulze, Christopher ; Sjögersten, Sofie ; Sonnentag, Oliver ; St. Louis, Vincent L. ; Torn, Margaret S. ; Tuittila, Eeva-Stiina ; Ueyama, Masahito ; Varlagin, Andrej ; Voigt, Carolina ; Watts, Jennifer D. ; Zona, Donatella ; Zyryanov, Viacheslav I. ; Schuur, Edward A. G.
• NOAA Program & Office:
  OAR (Oceanic and Atmospheric Research) ; ARL (Air Resources Laboratory)
• Description:
  Tundra and boreal ecosystems encompass the northern circumpolar permafrost region and are experiencing rapid environmental change with important implications for the global carbon (C) budget. We analysed multi-decadal time series containing 302 annual estimates of carbon dioxide (CO2) flux across 70 permafrost and non-permafrost ecosystems, and 672 estimates of summer CO2 flux across 181 ecosystems. We find an increase in the annual CO2 sink across non-permafrost ecosystems but not permafrost ecosystems, despite similar increases in summer uptake. Thus, recent non-growing-season CO2 losses have substantially impacted the CO2 balance of permafrost ecosystems. Furthermore, analysis of interannual variability reveals warmer summers amplify the C cycle (increase productivity and respiration) at putatively nitrogen-limited sites and at sites less reliant on summer precipitation for water use. Our findings suggest that water and nutrient availability will be important predictors of the C-cycle response of these ecosystems to future warming.
• Source:
  Nature Climate Change, 14(8), 853-862
• DOI:
  https://doi.org/10.1038/s41558-024-02057-4
• ISSN:
  1758-678X ; 1758-6798
• Format:
  pdf
• Publisher:
  Springer Science and Business Media LLC
• Document Type:
  Journal Article
• License:
  https://creativecommons.org/licenses/by/4.0
• Rights Information:
  CC BY
• Compliance:
  Library
• Main Document Checksum:
  urn:sha-512:4bdae83b0a6f8437fdbc0df7f7921d6aee1e91d5413e40e2688ae0b0bc310d59a53c18de36d5f6288834c4ebe7ec0a117f1905d494b626d4e78437d33b185357
• Download URL:
  https://repository.library.noaa.gov/view/noaa/68757/noaa_68757_DS1.pdf
• File Type:
  [PDF - 2.44 MB ]