A holocene CO₂ record from the stomatal index of subfossil Salix herbacea L. leaves from northern Sweden

Summary, in English

A stomatal-based method of palaeo-CO₂ estimation has been applied to a temporally detailed sequence of leaves from a high-latitude lake (68°N) in northern Sweden spanning the last 9000 years. The resulting atmospheric CO₂ reconstruction documents the onset of a gradual increase c. 5000 years before present indicating that the carbon cycle has not been in steady state over this time. Stable carbon isotope (δ¹³C) measurements of the subfossil leaves constrain the interpretation of the inferred changes in the operation of the global carbon cycle. The δ¹³C data reveal no marked or systematic shifts towards more negative values indicating that the CO₂ addition to the atmosphere 5000-1000 yr BP may have been predominantly of oceanic origin.

• Författare: Mats Rundgren; David Beerling
• Publiceringsår: 1999-01-01
• Språk: Engelska
• Sidor: 509-513
• Publikation/Tidskrift/Serie: Holocene
• Volym: 9
• Issue: 5
• Länkar: http://dx.doi.org/10.1191/095968399677717287
• Dokumenttyp: Artikel i tidskrift
• Förlag: SAGE Publications
• Ämne: Climate Research; Environmental Sciences; Geology
• Nyckelord: Carbon isotopes; CO reconstruction; Holocene; Stomata
• Status: Published
• ISBN/ISSN/Övrigt: ISSN: 0959-6836