Details

Autor(en) / Beteiligte

• Richardson, Jessica L.
• Desai, Ankur R.
• Thom, Jonathan
• Lindgren, Kim
• Laudon, Hjalmar
• Peichl, Matthias
• Nilsson, Mats
• Campeau, Audrey
• Järveoja, Järvi
• Hawman, Peter
• Mishra, Deepak R.
• Smith, Dontrece
• D’Acunha, Brenda
• Knox, Sara H.
• Ng, Darian
• Johnson, Mark S.
• Blackstock, Joshua
• Malone, Sparkle L.
• Oberbauer, Steve F.
• Detto, Matteo
• Wickland, Kimberly P.
• Forbrich, Inke
• Weston, Nathaniel
• Hung, Jacqueline K. Y.
• Edgar, Colin
• Euskirchen, Eugenie S.
• Bret-Harte, Syndonia
• Dobkowski, Jason
• Kling, George
• Kane, Evan S.
• Badiou, Pascal
• Bogard, Matthew
• Bohrer, Gil
• O’Halloran, Thomas
• Ritson, Jonny
• Arias-Ortiz, Ariane
• Baldocchi, Dennis
• Oikawa, Patty
• Shahan, Julie
• Matsumura, Maiyah

Titel

On the Relationship Between Aquatic CO2 Concentration and Ecosystem Fluxes in Some of the World’s Key Wetland Types

Ist Teil von

• Wetlands (Wilmington, N.C.), 2024, Vol.44 (1), p.1, Article 1

Ort / Verlag

Dordrecht: Springer Netherlands

Erscheinungsjahr

2024

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• To understand patterns in CO 2 partial pressure (P CO2 ) over time in wetlands’ surface water and porewater, we examined the relationship between P CO2 and land–atmosphere flux of CO 2 at the ecosystem scale at 22 Northern Hemisphere wetland sites synthesized through an open call. Sites spanned 6 major wetland types (tidal, alpine, fen, bog, marsh, and prairie pothole/karst), 7 Köppen climates, and 16 different years. Ecosystem respiration (R eco ) and gross primary production (GPP), components of vertical CO 2 flux, were compared to P CO2 , a component of lateral CO 2 flux, to determine if photosynthetic rates and soil respiration consistently influence wetland surface and porewater CO 2 concentrations across wetlands. Similar to drivers of primary productivity at the ecosystem scale, P CO2 was strongly positively correlated with air temperature (T air ) at most sites. Monthly average P CO2 tended to peak towards the middle of the year and was more strongly related to R eco than GPP. Our results suggest R eco may be related to biologically driven P CO2 in wetlands, but the relationship is site-specific and could be an artifact of differently timed seasonal cycles or other factors. Higher levels of discharge do not consistently alter the relationship between R eco and temperature normalized P CO2 . This work synthesizes relevant data and identifies key knowledge gaps in drivers of wetland respiration.