Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
The carbon charging of pines at the climatic treeline: a global comparison
Responsible organisation
2003 (English)In: Oecologia, ISSN 0029-8549, E-ISSN 1432-1939, Vol. 135, no 1, 10-21 p.Article in journal (Refereed) Published
Abstract [en]

The carbon charging of pines across the treeline ecotone of three different climatic zones (Mexico 19degreesN Pinus hartwegii, Swiss Alps 46degreesN P. cembra and northern Sweden 68degreesN P. sylvestris) was analyzed, to test whether a low-temperature-driven carbon shortage can explain high-elevation tree limits, and whether the length of the growing season affects the trees’ carbon balance. We quantified the concentrations of non-structural carbohydrates (NSC) and lipids (acylglycerols) in all tree organs at three dates during the growing seasons across elevational transects from the upper end of the closed, tall forest (timberline) to the uppermost location where groups of trees greater than or equal to3 m in height occur (treeline). Mean ground temperatures during the growing season at the treelines were similar (6.1 +/- 0.7degreesC) irrespective of latitude. Across the individual transects, the concentrations of NSC and lipids increased with elevation in all organs. By the end of the growing season, all three species had very similar total mobile carbon (TMC) concentrations at the treeline (ca. 6% TMC in the aboveground dry biomass), suggesting no influence of the length of the growing season on tree carbon charging. At a temperate lowland reference site P. sylvestris reached only ca. 4% TMC in the aboveground dry biomass, with the 2% difference largely explained by higher lipid concentrations of treeline pines. We conclude that carbon availability is unlikely to be the cause of the altitudinal tree limit. It seems rather that low temperatures directly affect sink activity at the treeline, with surplus carbon stored in osmotically inactive compounds.

Place, publisher, year, edition, pages
SPRINGER , 2003. Vol. 135, no 1, 10-21 p.
Keyword [en]
non-structural carbohydrates; lipids; conifers; high elevation; growth limitation
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:polar:diva-3587DOI: 10.1007/s00442-002-1154-7OAI: oai:DiVA.org:polar-3587DiVA: diva2:1099702
Available from: 2017-05-29 Created: 2017-05-29 Last updated: 2017-05-29

Open Access in DiVA

No full text

Other links

Publisher's full text
In the same journal
Oecologia
Natural Sciences

Search outside of DiVA

GoogleGoogle Scholar

Altmetric score

Total: 2 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf